tj s2 vrx 5 speed auto. have just done over 2000kms in it (picked it up last thursday :hmm: been driving it back from melb)
averaging at around 650km a tank on the highway
city and highway around 550km
mountains........ was around 15l per 100km wasnt driving it to rough
on the trip was averageing between 7l/100km to 12l/100km
so not to bad!
my manual 3L te did better tho redlined most its life and still gave me 450-500km to a tank. cant say it was babyed much.... :woot:

My KW gives me 12.6L/100km at the moment. Basially city and fwy during the week, approx 50+ kms per day, with mixed on the weekends anwhere from 15 to 100kms. The KH is doing 10.5/100KM but its a different driver , and, um, not a AWD.

2003 TJ VR-X, currently getting around 8.5 litres per hundred. 600+km a tank every time.
Could go lower but I have a lead foot.
When my dad borrowed it the other day he got the average down to 7.2 litres a hundred (even doing the speed limit and not babying it that much.)

Just goes to show if you drive a car a certain way, the fuel economy can be fantastic.
Extremely impressed with such a large car to get such good economy.

2003 TJ VR-X, currently getting around 8.5 litres per hundred. 600+km a tank every time.
Could go lower but I have a lead foot.
When my dad borrowed it the other day he got the average down to 7.2 litres a hundred (even doing the speed limit and not babying it that much.)

Just goes to show if you drive a car a certain way, the fuel economy can be fantastic.
Extremely impressed with such a large car to get such good economy.

wtf really? Is that on gas or petrol!?
On 91 unleaded I get 10.9 if I grandpa mine, in medium to heavy traffic. I tend to give it bursts every now and then though so about 11.5 average I'd say. It's on 11.3 at the moment for this tank.

wtf really? Is that on gas or petrol!?
On 91 unleaded I get 10.9 if I grandpa mine, in medium to heavy traffic. I tend to give it bursts every now and then though so about 11.5 average I'd say. It's on 11.3 at the moment for this tank.

Petrol..
Couldn't imagine how low it would go on gas lol.

I run premium in my car though, could make a difference?
Plus I have the K&N air filter (not a pod).
I dunno, its very good on fuel, Ill give it that!

Its because people need to understand the computer learns the way you drive.
Therefor if you drive it hard, its going to use more fuel. lol.
If you dont boot it all the time, you will get good fuel economy.
My brothers magna dad had that down to 6.9.
its possible.

have you had the car long enough to get a correct reading (not the readout from the trip computer?)

have you had the car long enough to get a correct reading (not the readout from the trip computer?)

Yep.
Easily. Ive done like 2000km in it already.. lol
Ive filled it up 4 times.
Im on my 4th tank now.

Petrol..
Couldn't imagine how low it would go on gas lol.


Actually, It would be higher... Its the price of LPG which makes it attractive... :)

I got 780Km in my 3 litre on the way to Melbourne thanks to the hume hwy and my amazing automobile!

Im currently getting 400kms out of my TL Magna i def need a new O2 sensor

I dunno what I normally get, my fuel tank does this thing where it jumps

But when I went on the toowoomba cruise I got like 550 out of a tank

partners getting 380-390 hwy km hoping it the exhaust

Im currently getting 400kms out of my TL Magna i def need a new O2 sensor


partners getting 380-390 hwy km hoping it the exhaust

I dare say in both of those cases it is the O2 sensor. Sounds like they are just playing up, as if they completely crap out the car basically comes to varying states of being undriveable, as I mentioned in the thread I created about it a week or so ago. Others had the same issue and it helped at least one person (not sure about anyone else).

Anyways, reason I mention that is that even when my O2 sensor was completely crook, I managed to go through a full tank of gas to about 1/8th with around 330km city driving. That gives you an idea of how far you can get with a crook sensor. I'm guessing with a crook sensor, highway driving isn't much more efficient as fuel would still be being dumped into the cylinders. Considering the ranges mentioned in your posts I say an O2 sensor would be a good place to start! (and replace spark plugs if they are worn). Just remember to reset the ECU after you install it to give it a clean learning slate.

Considering the difference in fuel economy between a good sensor and a bad one, it really is economical to spend the money in replacing it. It's very easy to do yourself, and you can get them for around $60 delivered. I'm quite happy with the one I got, it seems quite decent quality.

Replaced 02 sensor got a full service all the filters and the likes including plugs no changes after doing any of that.

The last month its got worse down to what i said above about a month ago we were getting 450km from a mix of 70% highway 30% city now doing the same is getting 390 ish even a 100% high way got us 390km in a recent trip

i get 580ks to a full tank on a th 2000 model sports magna with 196xxx on the clock

i did a week of full city stop start lots of short cold runs and the fuel economy suffered, got 450km from a tank

I currently get 350-400
Just doing small trips. Kills ya

I have 2002

I made Dinner Plain, VIC from Wallan, VIC (339km) and back (total of 678km) in my 2003 TJ Exec. 3.5L {197km on the clock} on a tank no worries. Thats alot of highway and one bugger of a mountain (Mt. Hotham) heaps of stop start at the peak (dodgeing skiers / snowboarders) took 53 litres when i got home but i didnt even have to sweat the 30 minute gap between the last 2 fill up options. Burned E10 petrol, refilled with the good stuff when i got home, give the old girl a treat to say thanks :)

Same here...TH 2000 and gets about 400 from the tank on a home to train station routine.

32 litres To get from North Haven SA to Horsham VIC - 451km = 7.09 l/100km on the highway. Happy with that!

Diamante 2.5 DOHC gets 500km around town per tank. No idea about highway yet.

Edit: Didn't let the tank get very low on fuel. Car actually uses 11L/100km around town.

12.1L /100 km on my TL wagon, just filled it to the first click on the pump from the low fuel warning light and the range to empty says 520 km. Trips around town, 5 Km or more.

TJ sedan sitting on 12.0L/100 km. I know this car will dip down below 9L/100km on a 80 KPH+ long drive, don't know about the TL.

Both stock as a rock. Pretty consistent between the two cars.

At current petrol prices that works out to be about 20c per km.
(About the same fuel consumption as my old HX straight 6 with half the Kw.)

I just drove to Sydney and back. Range from a full tank was 840 klms or 780 klms if I drove with aircon and progressive acceleration for rediculous speed limit changes in NSW

Standard 2004 Magna averaging just over 10l/100km city driving but gets down to around 9l/100km if I can get a good run with no stop/start.

On petrol? If so, that's extremely impressive for city!

been getting 9L-100 on the highway 12l-100 around town

7.3L / 100 km - 2002 Auto TJ2 Wagon - Really impressed.
8.8L / 100 km - 2002 Manual Ralliart

Both petrol only highway only.

depending how i drove and where i drove too i get lowest is 620 and highest is 720

After a proper LPG tune... I got 530km for 55L (10.4L per 100km) on gas for highway driving, with 290km with the A/C on. Before that was almost 15L per hundred on the highway.

Gas usage before the tune was 19.2L per 100km but will test over the next few weeks for new values.

This is a for 1998 Verada Xi, 3.5L. Venturi system LPG.

I just drove 1060km with four passengers & luggage in my 1997 TF 3 litre V6 & manual gearbox. 100km was city driving and the rest at highway speeds. It returned 7.4L per 100km. This is the same as my MX-5 with half the weight and about half the engine.

howd you go 1060km at 7.4l/100? your tank only holds 70L. for what u said to be possible you must have filled up atleast 5L

I get about 570-600km to a tank at the moment (50/50 Suburban & Semi-congested Motorway). I sheared an ISC bolt after cleaning the TB and ISC, so subsequently its running a bit rich and surging slightly. Its currently secured with one bolt and Loctite non-hardening sealant until I get it fixed. Prior to that, I was getting about 600-620km from a tank.

Updating my post from March, I have seen an improvement in economy (after replacing the TB), by the readout on the trip computer I get about 9.8-10.2L/100km, or approximately 670km to a tank on 50/50 suburban/free-flowing motorway with little in the way of spirited driving. All filters, plugs, leads, etc. replaced in last 12 months, and a 2.5" cat back sports exhaust fitted, and filled mostly with 91 (maybe every 3rd or 4th tank with 98)

wtf really? Is that on gas or petrol!?
On 91 unleaded I get 10.9 if I grandpa mine, in medium to heavy traffic. I tend to give it bursts every now and then though so about 11.5 average I'd say. It's on 11.3 at the moment for this tank.

This is no longer the case, it's now about 12 in the traffic I refer to there. I'm now taking a different daily route which is more fuel efficient and get about spot on 11. :(

After doing a light cleaning of the TB and vent ports with carbe cleaner I noticed a 0.2 L/k improvement, lol, but with the current light traffic conditions while people are still away I'm sitting on 11.9L/K which is awesome. (this is in the AWD).
The difference is the stretch on the freeway, no delays recently.

Hayden, I was only reporting on the fuel economy. The trip was over two days and yes I filled up when I arrived and on my return to determine how much fuel I used. I should mention that it is always about the same on every trip which always amazes me how good it is.

My KH Verada is getting about 13.5 litres per hundred k's and thats 50% easy driving around town and 50% on the highway, is this too heavy? I think it is

9.9 L/100km on a day trip of 220 km, 5 people in the TL wagon, with luggage, about 25% city, rest hill driving freeway and back roads, mostly at 90-100 KPH with lots of speed changes.
In theory that is 700 km to a tank.
I'd expect better on a flat road at constant speed though.
Stop/start city traffic gives me 13.5 to 15.1 L/100 km. Cold starts and hauling the heavy Magna back up to speed from a standstill really chews the fuel.

Did a trip to Goolwa with three passengers and boot full of luggage, 8.9L/100km. Nice!

howd you go 1060km at 7.4l/100? your tank only holds 70L. for what u said to be possible you must have filled up atleast 5L

lmao he would have had to been getting 6L /100km. goodluck to that :D

Stop/start city traffic gives me 13.5 to 15.1 L/100 km. Cold starts and hauling the heavy Magna back up to speed from a standstill really chews the fuel.

KJ wagon fully loaded doing daily schoolrun & crawl thru CBD (40km/h max)... its averaging 18-20l/100km :(


dunno how you guys run such low #s, only time ever averaged <10 was
TH 3.5 sedan doing return leg back to Melb from Tonsley Park pilgrimage = 1 tank.
Bit cheating though as i suspect its downhill more than up :)

18-20 is too much, even for a loaded wagon. I'd get it looked at. That is 6l V8 Commodore territory. Has it always been that bad?

14-15 TOPS in stop/start traffic.

In my KE I get about 470 just driving around town. On long city trips to Melbourne and back I get up to 600+

Only engine modification is a sports exhaust system from mr muffler.

I'm really happy with the 3.5ltr Verada. Such a beast of a car.

howd you go 1060km at 7.4l/100? your tank only holds 70L. for what u said to be possible you must have filled up atleast 5L

Lol, his post doesn't say he got 1060km out of a tank. It says he travelled 1060km, and averaged 7.4L/100km

Just had a long return trip Geelong - Portland with some short trips in Portland. Was surprised to get 652 Kms on a single tank of gas. Car is a 2005 AWD GTVI with a multi-point gas injection.

Did a rough calculation from the 60 L Full to Empty (excluding the 10L reserve or what ever) I get 10L/100k exactly with regular driving. So about 600km to the tank.

Constant 8.8 - 9.0/100 highway (all I really do). On the cruise at 115.

Stock 99TH sports manual. No matter what weight is in the car, I constantly get these figures

I just did an Adelaide to Melbourne and return last weekend. 3ltr 6G72 4spd Auto sedan, with cruise. I had 200km of city driving before leaving and I finished with 800km on the tripmeter before I switched to LPG. When I refueled, I managed to squeeze in 60.52ltrs and it was full into the neck. The return trip I decided not to run it down so low, so I switched to LPG at an indicated 1/4 of a tank with 698km on the trippy. Refueled today and filled to the neck again, 52.13 ltrs. I am no good at working out the mileage breakdown, but I figure she doing pretty bloody good. The LPG, gives me 500 to 520 km of city driving to 63 ltrs, but I did not test it out on the run.

I just did an Adelaide to Melbourne and return last weekend. 3ltr 6G72 4spd Auto sedan, with cruise. I had 200km of city driving before leaving and I finished with 800km on the tripmeter before I switched to LPG. When I refueled, I managed to squeeze in 60.52ltrs and it was full into the neck. The return trip I decided not to run it down so low, so I switched to LPG at an indicated 1/4 of a tank with 698km on the trippy. Refueled today and filled to the neck again, 52.13 ltrs. I am no good at working out the mileage breakdown, but I figure she doing pretty bloody good. The LPG, gives me 500 to 520 km of city driving to 63 ltrs, but I did not test it out on the run.

Roughly 7.3/100km for the petrol.

roughly 7.3/100km for the petrol.

schweeeet :)

Ok I need to have a say here, because I am so impressed with my V6 Magna that I just have to tell someone! haha

I have the TF with a 4G64, and the most I have gotten is 620kms to a tank, but now that is down to about 500-550kms to a tank (engine is wearing down with all the kms). Now my boss at work said that the TJ Magna which has the 6G74 3.5 V6 would be worse and would cost me too much to run, well clearly he doesn't know much about them because I have finally done a fuel economy test in my TJ Magna.

I filled it up with BP Ultimate as normal, and drove it to work each day for a week. On average, the display was reading that I was using 10L/100kms, now believe it or not, I actually got 700kms out of one tank of fuel! And that was with a mixture of different driving styles. Now just to double check that that was correct, I done the same test over the last week, and sure enough, I got another 700kms out of tank of fuel.

That's running BP Ultimate 98 Octane, Bridgestone Potenza S001 Tyres, New Ryco Fuel and Air Filter, New Platinum Spark Plugs (all 6), and Nulon 10W40 Full Synthetic Engine Oil.

I am so impressed with this Magna and I have to say that it is a great daily car. I filled it up again tonight and it said on the display "690km to empty" and even my dad couldn't believe it haha

My VS Commodore (supercharged) gets 400kms to a tank and my Turbo Diesel Holden Colorado gets about 500kms to a tank.

Your boss had no idea haha, the 3.5 v6 is a very efficient engine for its time.. Glad you are impressed

Yes, they're pretty good. I'm averaging under 10 in my manual Ralliart AROUND TOWN with use of the power on and off.

Your boss had no idea haha, the 3.5 v6 is a very efficient engine for its time.. Glad you are impressed

I know haha, I told him and he can't believe it haha, it's better then his VZ Berlina lol.

I'm still now averaging between 11.5 and 12 pretty steadily with a slightly heavy foot. If I absolutely grandpa it I think I could get it to low 11's. Damn you high economy bastards.

That said, this is on 91.

My 3.0L auto is still using 13.5-14L/100km on LPG in the city and it uses 10.5-11L/100km on Petrol.

With both tanks full, I have a range of about 1000km.

However, I mainly use LPG. Runs as good as; if not better than Petrol

I also have quiet a somewhat heavy foot. If its just me in the car, i give it a bit, with passengers, grandpaish

Alot of variables to affect fuel consumtion figures. Seasonal weather affects performance/economy also.
My current AWD isn't a patch on my previous FWD MY02 TJ magna series 1.5 exec 4 speed auto for fuel economy.

MY03 KJII AWD VERADA:
Kings SL front & Lows rears
18 x 8" with 235/40/18 tyres
Stock 3.5Ltr 6G74 with K&N Panel Filter, HM Perry headers with Y pipe & straight through muffler, stock cat & middle pipe section.
New iridium plugs, Top gun premium leads, Injectors only recently reconditioned.
Intake & MAF sensor recently cleaned out.
Penrite HPR10 fully synthetic oil & all diff/transfer case fluids done <2000km
Full trans flush <10000km


Combined cycle 450-480Kms per 65Ltr tank
Driving style: Normal every day work in stop start traffic with semi regular Hwy miles & I like the occassional spirited driving session.

ADM, the AWD tanks are 65L not 63L in capacity.

MY05 KW GTVi AWD:
Standard GTVi AWD suspension
18 x 8" with 235/45/18 tyres
Slightly modded 3.5Ltr 6G74 with 380 cams, K&N Panel Filter, extra CAI piping, HM headers, OEM sports straight-through muffler, 200cpsi metal cat and SKR tune.

490 - 510 Kms per 65Ltr tank in normal every day work in stop start traffic with some 70km/hr stretches with regular lead footing to beat traffic.

My best was a trip up to Rockhampton a few months ago. 853 kms to one tank. Yep, that's around 7 Litres / 100kms. 4G64 economy goodness. And that was on Egen 95 E10 stuff from the independent servo. I got a pic of it too. when I pulled up to refill.

Some stats from the very first day I got my TL on 19th December 2012 - I use an Android app called Fuel Log to keep track of EVERY fill up...

Best - 9.83l/100km
Average - 11.51l/100km
Worst - 16.13l/100km

These are fuel only costs, I do a stupid amount of km's apparently, using only BP Ultimate 98ron...
Accumulated average costs per kilometer - $0.41
Accumulated average costs per day - $59.23
Accumulated average costs per week - $414.61
Accumulated average costs per month - $1,801.76
Accumulated average costs per year - $21,618.76
Average kms per day - 145.73 km
Average kms per week - 1020.14 kms
Average kms per month - 4433.24 kms
Average kms per year (expected) - 53193 kms

Total mileage - 18654 km's
Total fuel - 2207.56 litres
Total fill-ups - 48
Total Fuel Costs - $7,670.17 (holy shit, I had no idea it was this much! But I had fun burning it! haha)
Period of fill-ups - 128 Days

And ALL of this has been for pleasure since I work from home/online. It's kind of scary looking at the figures now, haven't really checked it to this level of details, damn I burn a lot of petrol!

All my driving is usually a mix of highway there and back with the middle parts fanging it down back country bitumen and dirt roads in low gears, maybe 60/40 fang/highway.

Some people are posting some crazy fuel stats. I think my worst consumptions is around 10-11 Litres / 100kms. Averaging 8-9 Litres mixed driving with the best being about 7 litres. But it does take me a lot longer to get from 0-100 than a 3.5L being a measly 2.4L

I fill up once a week but I never let it get to the empty line in my ts v6... But I'd estimate I get about 500ks a week before I need a fill.

I have a chipped ecu that's supposed to increase power and fuel consumption... I dunno if it actually does anything in the consumption way of things cause I have it set for max power but it makes me want to plant my foot more so I'd probably get 600ks plus if I tried

ADM, the AWD tanks are 65L not 63L in capacity.


Amended, thanks Vlad. Fuel economy even worse than what I thought.

Just helped a cousin move some sheet metal and poles with a 7x5 trailer (20km total driving) and not pussy footing it either and the estimated range to empty has dropped to 470kms.

Some people are posting some crazy fuel stats. I think my worst consumptions is around 10-11 Litres / 100kms. Averaging 8-9 Litres mixed driving with the best being about 7 litres. But it does take me a lot longer to get from 0-100 than a 3.5L being a measly 2.4L

Take into account that magnas like say, my 3.5ltr AWD for example have never been frugal with their permanent AWD, 130kg extra weight (over FWD TJ V6 models) & auto only are not really a winning combo in the fuel economy stakes.
You are not comparing apples with apples here, especially given you have a lighter four cylinder magna.

6g75 converted manual magna TJ sports on gas injected LPG, I get 450+ kms per tank of lpg, which at current prices costs about $35-$40. This is mostly city stop start driving with an average speed of about 35kph. I used to get about 350kms per tank on the old 6G74 using the mixer gas system.

I think its pretty good considering my right foot gets a little heavy sometimes. :happy:

On average my trip meter is around 400 when I put fuel in, but I don't always fill it up (depends on fuel price etc) so would estimate I use 400 to 450 a tank, car is stock 2002 tj no mods, city driving nothing over 60kph. Highway driving, again depending on conditions (head winds and overtaking) I get an easy 600+. Best ever distance I ever got was deer park in melb to the Mobil at the bottom of the freeway in Adelaide on one tank. Was somewhere around 700kms on one tank. But have never been able to replicate that.

KF verada gets 550-800 per tank my fiance drives that one.
TJ series 1 advanced magna with 2 1/2" exhaust gets 600/tank pretty consistant me driving. (mine)
TJ series 2 executive wagon stock chockers with audio and 18" rims gets 800km/tank roughly seems to float between 8 and 9ltrs/100 (mine)

TJ Ralliart Magna also mine varies allot depending on who is on the road and who needs to be shown how fast a magna can be ^.^
I can get it to sit as low as 7.2/100 and even lower when drafting off my fiance's mums car 4.2/100 =P usually tho it gets around 10.2/100 as an average of 6weeks.
If I avoid 100/110 zones and only go with the 80 zones to work I get a consistant 7.9/100.
And if i go on car cruises a tank averages around 11.3/100 but it boots hard not too many commodores it cant show up effortlessly.

Also my brother and his mate's cars
TF executive 3.0 wagon we consistently got 6.2/100 that car was a freak. on a long road trip to Melbourne we would get 1100km from a tank I think it must run on vapour too?

TE altera sedan 3.0 he gets 650 a tank 'he's worse than me feet are made from lead i think'
KH sedan 590-650/tank
VRX S2 600-700/tank

and finally his mates car

TL AWD VRX ahh.. this is funny the ralliart flogs this thing through corners and that was the selling point /shame... ok so
his car uses 10.5 if he drives like a granny and if he drives with us a nice little figure of around 14.8-15.5/100 that thing drinks fuel.

so there you have it 9 cars and the average fuel for all nine just for shits n giggles. 9.22/100

You can't seriously be getting up to 800 in a single tank on a kf... That has to be mistaken, I had a ke and the ke was supposed to be one of the most frugal of the lot of the third gens and it still only got 650 at most and that was with all freeway

Must know if its modified or anything cause it's just hard to swallow

I drove from Ipswich to Mackay and back, via Bundaberg - 2265km in total, and I averaged 8.5L/100km.
I last filled up in Rockhampton, drove home, via Bundaberg and the fuel light just started to flicker about 5 minutes from home - 730km travelled.

With the 71l tank, 800 km = minimum economy of 8.8l/100km (tank dry)

Easy to achieve on a long trip with a steady foot and maintained car.

My best in our old 3l TF was 7 l/100km Melbourne to Adelaide. This equals 1014km range.

The 380 7.8l/100km equals 871km from the tank.

Our Hyundai i40 diesel 4.9l / 100 km = 1428km off 70 litres

You can't seriously be getting up to 800 in a single tank on a kf... That has to be mistaken, I had a ke and the ke was supposed to be one of the most frugal of the lot of the third gens and it still only got 650 at most and that was with all freeway

Must know if its modified or anything cause it's just hard to swallow

I was regularly getting 800 highway klms from my KH.

Easy 800 from a full tank of 91 in my kf, and that's loaded up with 2 people, a full boot and a full back seat of crap. So 1500kg car + 250kg in people and luggage.

I own a tl manual with a 6g75 and I average 600kms just around town driving and 800-900 on the highway.. Might sound hard to believe but I averaged 6.6 litres per 100km on the way back from sydney last month, it just clocked over 1000kms on a single tank than I chickened out and filled up.. Never had it running that efficient, normally around 7-8 litres per 100kms

About 450-500km city driving out of my 2001 TH. Averaging 12.5-13l/100km driving super conservative and gentle acceleration etc.
Might be time for me to change o2 sensors, replace air filter etc.

Got a TW on gas; got 550 km and took 64 L to fill the gas tank., Cost was $37. thats 11,6 L/100 km on gas; cost is $6.75 per 100 Km. The old TP is costing $16.50 per 100 KM on petrol.
Dunno about the TW on petrol. Why spend money to find out!!!
rumpfy

3.5 TJ VRX. used to get 600+ but since I've gotten a new exhaust (cat back) economy has gone down the shitter. so far half a tank has gotten me 200k's. I'm thinking coincidence with the exhaust just being done, Getting another motor put in, if I can find somewhere in Perth that can do it, any suggestions ?

3.5 TJ VRX. used to get 600+ but since I've gotten a new exhaust (cat back) economy has gone down the shitter. so far half a tank has gotten me 200k's. I'm thinking coincidence with the exhaust just being done, Getting another motor put in, if I can find somewhere in Perth that can do it, any suggestions ?

Why are you replacing the motor? Its obviously the O2 sensor in the exhaust

Why are you replacing the motor? Its obviously the O2 sensor in the exhaust

I wasn't sure what it is, but I'll replace the O2 sensor in the morning, Cheers

Engine/Manual conversion was on the cards

My last tank got 570km and filled it up with 61.5L
Equates to 10.7L/100km but the trip meter showed 11.1L/100km
This was with 95 RON fuel.
Incidentally the fuel light came on some 30km earlier with 91RON fuel though the trip meter is reading 10.9L/100km

I know my fuel economy is terrible and it's probably my driving style and short trips - average speed is ~35kph the past 2 tanks of fuel.
But who'd have thought that HM headers would make it worse, and new tyres improve it?

I analysed my fuel usage over the past 22,000kms and found that
- modifying my air filter box (cutting/grinding away ribs on inlet side) improved my economy by 0.23L /100kms.
- changing transmission fluid may have worsened economy very slightly by 0.05L / 100km
- fitting HM headers myself worsened fuel economy by 1.61 L / 100km - but only measured over 800km, so maybe this was just settling in or excitement :)
- and putting new tyres and front coilovers have improved economy by 0.38L / 100km.

at the end, the past 2,500km have been 0.5L / 100km thirstier than my starting point 2 years ago.

Hope someone else finds this as interesting as I did ;)
if interested in the intake mods, there should be photos in my members ride thread.

Cheers!

Well the TJ 2 VR-X i have now continues to impress. The average fuel consumption was around 11-12, and now its fallen right down to 10.3. The confirmed reading i got (from taking the ltrs put into the tank and dividing the KMS equals the most fuel efficient car ive ever owned 58.89 / 6.615 = 8.90 Lts/100kms

when i did my trip to adelaide for the SKR tune i got 525km and still had just over 1/4 tank left showing on the cluster driving like a grandma and it was sitting on 8.6/100km
got HM headers and VRX muffler, but around town i get about 450-500

I just did a 100km run in the magna and filled up at 101, it took 11ltrs of LPG @ a cost of $7.00 .....
Showed 8.9 on the trip comp so that's about what it should be.

04 Magna TL..stock standard..drive from Adelaide to Brisbane(and back) using cruise control..7.9 to 8.1L/100km. Trip computer reading.

TJ Ser 1 3.5l auto, no mods, 98000 km
7.1 l/100 km on 91 ULP (uncontaminated with ethanol) for Queanbeyan to snow (Bullocks Flat) return and Queanbeyan to Sydney. 49.4 litres for 693 km, filled and refilled to 1st click.
Normal highway speeds except for pre dawn run to snow, where I dropped to 80 or 90 when there were no cars behind me on account of the plague of roos. Also 80 for about 20km with M5 roadworks, and usual traffic hold up before M5 tunnel, but not too bad. Air con used for around 50 km. Moderate headwind Queanbeyan to snow, light winds rest of trip.
Trip computer showed average consumption of 6.1 l/100 km, though it was more accurate with the distance before empty, showing 970km (estimating consumption at 7.4l/100km on remaining fuel).

Every day driving to and from work depending on petrol used, whether unleaded 91 or 95 I'm getting on the trip computer around 10.3 up to 11.5 litres per 100 kms. On a trip with a full tank sitting on speed limit around 8.4 to 9.5 all the time which equals to 600 plus out of 2001 magna sports auto

I do a lot of highway driving from Mackay to Townsville and back, so my trip computer is always saying I can get just under 800 km to a tank with around 7.4-8.0 l/100 km. I think it is quite accurate on the highway but around town i would get about 600 km's I'd guess, not really sure.

lowest fuel econ i have had was 7.1 l/100 km. Couldn't believe it :P
https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/988630_10200953042619720_576798078_n.jpg

I think Magnas have brilliant economy for their age and their engine size. I can watch my mate's commodes fuel gauge drop. BTW my car is a 3.5 TJ auto.

Mix of town and highway driving usually gets me 440km from a tank of LPG.

Flicking over to petrol after that long on gas usually gets me some light detonation under full throttle until the ECU figures out what's going on and pulls enough timing. Usually one pull through the rev range is enough.

Like some others, I went for the best range I've had regularly which is 551-600km. I've probably seen 600+ though can't remember for certain.
My car is a 2004 TL AWD without any engine mods.
Figures are for country driving obviously and although economy for AWD isn't as good as a FWD the difference is probably more noticeable for city driving. My economy for country driving is fine by my account.
For city driving I get 12-15 L/100km, maybe more in pure stop-start traffic. That would equate to 400-500 km if filling up at 60L. (How much do you people push the last few litres of fuel in your tank?)
For a few months I was working in Canberra and living in Sydney. I could do the whole return trip on one tank. Specifically that was Sydney northern suburbs - Symonston - Tuggeranong - Symonston - Sydney with four cold starts.
The best economy I've seen on my trip computer over a significant distance was when filling up in Sutton Forest on the Hume Highway when the engine was warm, restting my computer, and heading (downhill!) to Sydney, a distance of more than 100km, with around 8 L/100km showing.

Just bought a second hand 2003 TJ series 2 with tip tronic and all the other goodies.
Still on my first tank from last week.
Just driving to and from work I've done 600kms and the petrol lights just come on.
Running on premium seems to give me a smoother ride and a bit more mileage.

My wife's KE is still getting around 550km. She fills it just below a quarter of a tank. So there's probably 600kms+ to a tank

So happy with our magnas.

I swear most of you are either lying or drive like your grandma's grandma. Even then I don't see how people are claiming such high mileage in excess of 600km to a tank

I have a 98 model, everything standard. Car kept in awesome condition with constant services, engine bay is clean as a whistle. Tyres are good and overinflated at around 38psi. I even ran 2 tanks of injector cleaner through just to be 100% certain.
If I drive like an absolute granny, holding people up at the lights with bugger all acceleration and always, always using cruise control with very light brake use (coast to everything where possible) I can just pull 550km from full to reserve. Most of that is at 60-80kph. Most of that is highway at 80kph with some city driving

If I drive normally which is fast off the lights and pretty fast everywhere I get 400, maybe 450 if I really squeeze the stone. No way are any of you 500+ unless you drive slow enough to make a 1.3L ecobox look fast, and if you are getting that much. HOW!?

edit: running BP ultimate does nothing at all for my fuel economy, I squeezed out 420km from the last tank before it spluttered around a corner, 91/95 is normally about 450

Your figures suggest you might need your car's O2 sensor replaced. Conversely, there's the question of how many litres of fuel your car has used when you get to 'reserve'. On mine, the low fuel light used to switch on when there were 15 litres remaining - now it's at 25-28 litres. The latter will quite obviously result in a lower 'apparent' range. As I've said before, all these figures on what you get out of a tank are pretty meaningless (especially given differences in tank size between AWD/2WD sedans & wagons) - you need to track how many litres/100km you're using (and to differentiate between city and country driving).

I swear most of you are either lying or drive like your grandma's grandma. Even then I don't see how people are claiming such high mileage in excess of 600km to a tank

I have a 98 model, everything standard. Car kept in awesome condition with constant services, engine bay is clean as a whistle. Tyres are good and overinflated at around 38psi. I even ran 2 tanks of injector cleaner through just to be 100% certain.
If I drive like an absolute granny, holding people up at the lights with bugger all acceleration and always, always using cruise control with very light brake use (coast to everything where possible) I can just pull 550km from full to reserve. Most of that is at 60-80kph. Most of that is highway at 80kph with some city driving

If I drive normally which is fast off the lights and pretty fast everywhere I get 400, maybe 450 if I really squeeze the stone. No way are any of you 500+ unless you drive slow enough to make a 1.3L ecobox look fast, and if you are getting that much. HOW!?

edit: running BP ultimate does nothing at all for my fuel economy, I squeezed out 420km from the last tank before it spluttered around a corner, 91/95 is normally about 450

Hi, There is no actual reserve tank so to speak. The low fuel light comes on, at least on mine, with 70kms to go. It is no use just talking about how many kays you can travel until that light comes on. To find our your actual usage, run til light comes on and record kms travelled. Fill up and record how many litres. Repeat this a few times and then average it out. For example:
1. 550kms travelled and filled up 65Ltrs means (65/550) * 100 gives 11.82Ltr/100km
2. 540kms travelled and filled up 65Ltrs means (65/540) * 100 gives 12.04Ltr/100km
3. 550kms travelled and filled up 66Ltrs means (66/550) * 100 gives 12.00Ltr/100km

Average the three above and you have 11.95Ltr/100km

Your tank's capacity is actually 71Ltrs so extrapolating that, you should be able to do 594kms to empty ((71/11.95) * 100).

Also, using cruise actually uses more fuel. Better to control the accelerator yourself (the CC will keep supplying fuel in situations you already deem unnecessary).

Conversely, there's the question of how many litres of fuel your car has used when you get to 'reserve'. On mine, the low fuel light used to switch on when there were 15 litres remaining - now it's at 25-28 litres. The latter will quite obviously result in a lower 'apparent' range. As I've said before, all these figures on what you get out of a tank are pretty meaningless (especially given differences in tank size between AWD/2WD sedans & wagons) - you need to track how many litres/100km you're using (and to differentiate between city and country driving).

I don't go by how many litres I put in on that tank, I go by how many litres it took to refill the tank. Its usually about 60L (maybe as low as 55L) to an average of 450km. That's an optimistic 8km/L or 12.5L/100km

A hell of a long way off some of the 10km/L or higher some people are quoting.

Someone suggested theres a way to check if the O2 sensor is in need of replacing before actually replacing it?

I don't go by how many litres I put in on that tank, I go by how many litres it took to refill the tank. Its usually about 60L (maybe as low as 55L) to an average of 450km. That's an optimistic 8km/L or 12.5L/100km

A hell of a long way off some of the 10km/L or higher some people are quoting.

Someone suggested theres a way to check if the O2 sensor is in need of replacing before actually replacing it?

Hi Millenium, isn't the bolded sentence the same? Please read my post above. Also, 55/450*100 is 12.22L/100km and 60/450*100 is 13.33L/100km. That is the range I get in my 1700kg AWD Verada GTVi doing the daily to/from work/drop kids at school weaving through suburbia and city.

I don't go by how many litres I put in on that tank, I go by how many litres it took to refill the tank. Its usually about 60L (maybe as low as 55L) to an average of 450km. That's an optimistic 8km/L or 12.5L/100km

A hell of a long way off some of the 10km/L or higher some people are quoting.

Someone suggested theres a way to check if the O2 sensor is in need of replacing before actually replacing it?
60l/450km works out at 7.5km/l (13.3l/100km). 55l/450km works out at 8.2km/l (12.2l/100km). Not too shabby for around town in an auto.

On country trips, my TW AWD VRX can easily return 11km/l (9l/100km) or better. Around town, it's typically around 7.7-8km/l (12.5-13l/100km). FWIW, I tend to re-set the fuel metering every time I refill, so it's quite easy to keep track of the average consumption on any tankful.

Anyone with an exhaust gas analyser should be able to check the O2 sensor's performance.

I swear most of you are either lying or drive like your grandma's grandma. Even then I don't see how people are claiming such high mileage in excess of 600km to a tank

I have a 98 model, everything standard. Car kept in awesome condition with constant services, engine bay is clean as a whistle. Tyres are good and overinflated at around 38psi. I even ran 2 tanks of injector cleaner through just to be 100% certain.
If I drive like an absolute granny, holding people up at the lights with bugger all acceleration and always, always using cruise control with very light brake use (coast to everything where possible) I can just pull 550km from full to reserve. Most of that is at 60-80kph. Most of that is highway at 80kph with some city driving

If I drive normally which is fast off the lights and pretty fast everywhere I get 400, maybe 450 if I really squeeze the stone. No way are any of you 500+ unless you drive slow enough to make a 1.3L ecobox look fast, and if you are getting that much. HOW!?

edit: running BP ultimate does nothing at all for my fuel economy, I squeezed out 420km from the last tank before it spluttered around a corner, 91/95 is normally about 450

I have a 2002 KJ GTV as per my signature, I use Unleaded 91 (I've tried 95/98 for a few tanks full, car doesn't perform noticeably better, if anything it's worse) and for an average weekly commute to and from work in a variety of traffic and 50/60/80 zones, I get mid to high 11L/100km which gives me somewhere between 550 and 600 kms to a tank if I drive responsibly. I'll get low 11L/100km and thus about 600kms if I did a more countryish run. Some days, I tend to have a slightly heavier foot sometimes to meet certain lights on the daily commute and just generally because I'm in my early 20's and don't mind driving a bit fast, and that will net me low 12's. Either way though it would be unusual for me to get less than 500km to a full tank. If I go full country/highway driving I can get below 9L/100km but that's out on the open road.

These numbers are all from the Average Fuel on the trip computer, I don't work these out myself, the car will do it better than I could. I assume it's very accurate, given that the distance travelled is obviously going to be accurate, and the Total Fuel number is always pretty much dead on to how much I can fill the tank with from the bowser. Simple maths for an ECU. I reset the numbers every tank refill, and I always run it to near empty and then fill to the brim unless fuel is particularly cheap mid tank. My car is newer than yours but it's the same engine, it's also heavier and it's the sports version, so you shouldn't be getting much worse figures than I do. I would trust these figures, I assure you I'm not making them up, they vary by a few decimals tank to tank but it's always in the ranges I listed above.


Also, using cruise actually uses more fuel. Better to control the accelerator yourself (the CC will keep supplying fuel in situations you already deem unnecessary).

Where did you read this? First I've heard of it, I would think having the car maintain the absolute minimum output to maintain your desired speed and sitting exactly on that marker instead of the inevitable tiny ups and downs from your own foot on the pedal would yield more efficiency.

From experience/experimentation with previous KS and the current car. Because a driver can monitor road condition and adjust throttle better than CC. On a straight flat highway with little traffic and inexperienced driver, than the CC will be better.

From experience/experimentation with previous KS and the current car. Because a driver can monitor road condition and adjust throttle better than CC. On a straight flat highway with little traffic and inexperienced driver, than the CC will be better.
In my experience, cruise control makes no difference to fuel economy compared to a carefully-driven car not using it under the same conditions. For most drivers, the real advantages of cruise control include: (a) more consistent speeds (except in hilly terrain); less risk of incurring speeding fines. Regarding (a), this could lead to either higher or lower fuel consumption, depending on what your average speed would be without cruise control and how often you deviate from that.

My car is indicating 10.1L/100km, and though I haven't done the calculations it is about right as I fill up 60L at around 570km or so each time.
I've managed to get 610km the previous tank but had to put closer to 62L.

The car used to use mid to high 11L/100km, but since cleaning the PCV valve, changing leaky rocker cover gaskets and tube rings it dropped to about mid 10L/100km, and since cleaning the TB, new spark plugs, new air filter, new fuel filter and new oil/filter it has dropped a further 0.3-0.4L per 100km.
I have the 5 speed too which from what I have read is less fuel economical, though I drive it sedately and throughout a full tank I rarely if ever WOT the car, at most I will give it 90% throttle maybe 5-7 times in a tank, if that.

Hi Millenium, isn't the bolded sentence the same? Please read my post above. Also, 55/450*100 is 12.22L/100km and 60/450*100 is 13.33L/100km. That is the range I get in my 1700kg AWD Verada GTVi doing the daily to/from work/drop kids at school weaving through suburbia and city.

No, the first is the previous tank of fuel i've just gone through, the second is the tank of fuel I have just filled up with. The former estimates how much was used and how far you got from it. The latter measures how far you drove, and then measures how much fuel was needed to refill the tank to the same mark. The former is not accurate as the fuel guage and reserve light won't come on at the same mark every time, the latter is as it measure exactly how much fuel was used, not how much fuel you think was used

Confused? I am too
Yours is an AWD which on average will burn a significant amount more than the FWD. I would expect a good 2km/L more just because of that


Where did you read this? First I've heard of it, I would think having the car maintain the absolute minimum output to maintain your desired speed and sitting exactly on that marker instead of the inevitable tiny ups and downs from your own foot on the pedal would yield more efficiency.

+1, CC will be more fuel efficient on flat surfaces as it doesn't fluctuate as much. I can see it being worse on inclines though as a drive can pre-empt the hill and slowly build/scrub speed earlier. Most of what I drive is pretty flat

Millenium, as mentioned before, there is no reserve tank/light. You have a 71 litre tank and that is it. The light is a low fuel warning light. On mine, the low fuel warning light comes on with 70kms to go, how do I know that, well, the DTE on my trip computer indicates 80kms to go and as its interval is 10kms, the next change causes the low fuel light to come on. For accurate fuel usage without trip computers, run roughly the same distance and always fill up to the first click. Do this several times to get your average.

What matters is how much fuel was used to go a given distance. Nor does it matter whether the light comes on or not (P.S. i'm aware its not a reserve but I still call it a reserve light, like how the yanks call petrol 'gas')
It doesn't matter if the fuel tank is 7, 70 or 700L. I fill it up. I don't care how much fuel it takes to fill it up, then I drive for as little or as long as I like. It's when I go to refill that I can make a calculation. If i've driven 200km and it takes 20L to refill it, then my range was 10km/L. Really simple
I don't go off my range till 'fuel low light' as thats not accurate, I go off how many litres the car can fit since the previous refill
Anyway, it's been 5 tanks of fuel now and it is consistently about 12.5L/100km at a conservative guess, its actually closer to about 13L. Absolute granny of all granny's is about 10.5-11L which is still way higher than what most people are claiming. I'm still skeptical as to how truthful that is as it was a similiar story with one of my motorbikes. People claiming at least 50mpg / 22km/L, some as high as 55mpg / 23.3km/L, when in reality it was practically impossible to ever get more than 20km/L no matter how casually you rode, it was closer to about 16-18Km/L on average

Anyway, it's been 5 tanks of fuel now and it is consistently about 12.5L/100km at a conservative guess, its actually closer to about 13L. Absolute granny of all granny's is about 10.5-11L which is still way higher than what most people are claiming.

Really? Those numbers are about what I claimed. Your normal one is about .5 higher than I see unless I drive like a dick (Not suggesting you do, you maybe get more traffic) but your granny mode is actually about what I'd see. It doesn't sound like you're really doing that bad?

Some people are claiming over 700km to a tank on the highway, up to 800km. That's 25% better than I can achieve when driving painfully slow and steady

Millenium, that claim of 700 to 800 is to empty and is an extrapolation of distanced travelled, fuel pumped in and remaining fuel.
thus, say 600kms on highway then fill up say 55litres, so actually still had 71- 55 = 16litres.
now 55/600*100 is 9.17L/100k. Now assuming the remaining16 litres was used at the same rate will get another 174kms, if my math is correct thus from full to empty is 774kms.

Highway driving should easily see over 600km

I would always see 600km + to a tank with a mix of highway and city driving (average speed on the trip computer of about 50-60km/h from memory) and this is with performance cams fitted.
Was always in the 10-11 litres per 100 km with mixed driving.

Never did 100% highway but would expect 7-8 probably.

These days I do city only, average speed reading at 40km i guess, this gets me around 13-14 litres per 100.

I have gotten over 700 (just) from the past two tanks. Highway driving to work and back, set right on the speed limit. Every other tank has been easily over 600 kms. (TJ2 VRX)

And there we have it, people claiming its 'easy' to get over 600km. I doubt you are driving till you run out of fuel on the side of the road either. So assuming lying isn't the issue, there must be something wrong with my economy because its nowhere near 'easy' for me to get anywhere close to 600km. Yes I drive it hard and fast but if it were 'easy' to get 600km then when I drive it like a granny I should 'easily' see 650-700km, not barely scraping 550

So worth replacing the o2 sensor? anything else that might be an issue?
Would even disconnecting the battery to reset everything help?

Some people are claiming over 700km to a tank on the highway, up to 800km. That's 25% better than I can achieve when driving painfully slow and steady
You can't compare highway driving with slow and steady city driving at all. It's just not an accurate comparison.

My O2 sensor was on its way out on my TJ at 100k / 6 years. Would definitely recommend replacing it.

You can't compare highway driving with slow and steady city driving at all. It's just not an accurate comparison.
Accurate, just not particularly meaningful.

My O2 sensor was dead in less than 4 years, with just 75K on the clock.

Not comparing highway to city. When I go grandma for cmparisons its done primarily on highway.
Ill replace o2 sensor and observe. Is it worth going genuine or is aftermarket ok?

The driving to and from work has been mainly highway, but there is a fair bit of stop-start. I am also not really driving for Economy, because I use full power to get onto the highway.

What do I get out of a tank of petrol? About a weeks worth of fun. :)

I was just thinking that showing average speed along with fuel consumption would be a good way to compare different driving conditions.
My commuting returns an average speed of 25 to 30kph (I've been tracking it for about the last 10 fill ups)
I'm burning through 16L every 100km since fitting HM heaeders, but yeah, I'm in shitty traffic, stop start all the time and I'm a lead foot.
My average speed through the school zones, round abouts and 50 zones up to the main road (about 3km) is higher than when I get to the 80 zone because the "main road" is just full of cars & traffic lights that take 3 cycles to get through.

My only good news on my petrol bill is that I filled up at WW / Caltex and somehow scored a 43 cpl discount - paid $0.95 per L yesterday. This week will be my cheapest $/Km in the Magna since I owned it :)

Been tracking the kms i get from LPG.

I get between 350 and 500kms from around 65L. Its hard to say how much fuel I use because 'full' is dependent on how much I drain from the tank and how much it decides to put back in before it clicks off.

Highway usage gets much better results - usually below 15/100 from the trip computer.
around the 'burbs gets me over 20/100.

After speaking to a good mechanic mate (A good mechanic more than a good mate) I have changed my LPG/Petrol usage habits so I no longer get measurable results.

Turns out, little bits of petrol all the time rather than 10-20L of petrol after a whole tank of gas is better on the engine...

Been tracking the kms i get from LPG.

I get between 350 and 500kms from around 65L. Its hard to say how much fuel I use because 'full' is dependent on how much I drain from the tank and how much it decides to put back in before it clicks off.

Highway usage gets much better results - usually below 15/100 from the trip computer.
around the 'burbs gets me over 20/100.

After speaking to a good mechanic mate (A good mechanic more than a good mate) I have changed my LPG/Petrol usage habits so I no longer get measurable results.

Turns out, little bits of petrol all the time rather than 10-20L of petrol after a whole tank of gas is better on the engine...

You need a tune or something. Mine gets 14L/100km around the suburbs. Normally on the highway it sits at around 11.5L/100km. Went down the South East not long back and averaged 10L/100km for the trip; mind you, that was about 1500km of highway driving.

Car is a Auto TF 3.0 mixer LPG.

Graham,

I'm interested by your reference to fitting HM headers. Have you noticed a difference in fuel consumption since having them fitted? (I'm currently looking at getting some for my TL AWD.)

Geoff, do it, I have not looked back since fitting a set. It restores the lost power due to bad Y join design plus a little more power and more low to mid torque which is much appreciated in the AWD. As for fuel economy, one tends to drive harder after fitting one so naturally it will use more but I reckon because it has more low to mid range torque will help with fuel consumption. I also always shift manually and is in 5th at just over 40kph and reving at 1200rpm.
Just make sure you order the AWD one. the difference is the AWD rear pipe forms a circle shape as it curls around whereas the FWD version is more like a rounded corners square shape.

I'm interested by your reference to fitting HM headers. Have you noticed a difference in fuel consumption since having them fitted?
If you're hoping for the headers to pay for themselves via improved fuel economy, be prepared for a long wait. Suppose, for example, your present fuel consumption is 13l/100km @ $1.50/litre and you pay $900 for a fitted set. If you gain a 5% improvement in fuel economy (i.e. taking the average down to 12.35l/100km), it'll take 92,308km before you reach the break-even point. Granted, fuel prices are likely to increase, but you'll also be losing the interest you could otherwise earn on the $900.

Thanks guys.
I've been familiar with extractors for a long time. The way I like to look at them is that they are a versatile modification. If a car is driven gently (no faster than before) then a slight improvement in fuel economy can usually be expected. If the extra power and willingness to rev are taken advantage of, then fuel consumption won't improve (and probably get worse). Vlad your reply more or less confirms this.
I was interested to know if someone who has fitted them to a 3rd gen Magna has any objective data.
Macropod good calcs. I'm not necessarily expecting to recoup all my money but to put it another way I'm not interested in engine mods that lead to worse economy. Have you had extractors fitted to a Magna?

I have a set of HM headers on order ...

Graham,

I'm interested by your reference to fitting HM headers. Have you noticed a difference in fuel consumption since having them fitted? (I'm currently looking at getting some for my TL AWD.)

My fuel consumption has worsened, but traffic in my area has worsened at an increased rate - it's gone to the shitter.
Average speed on this tank of fuel just commuting to work is about 23kph now.

I think I need a motorbike, except I'm worried I'd kill myself once I got used to it.

I'll get it to the drag strip one day and see if it's affected my 400m time at all. Only other mod is new Kumho tyres replacing Chinese ones that came with the rims.

Filled up yesterday as I was risking it a bit. 60.9L after travelling 483kms so 12.6L/100K fir my daily commute to and from work with frequent WOT take off to beat traffic from the merge lane. Had less than than 5 litres left.

Geoff, do it, I have not looked back since fitting a set. It restores the lost power due to bad Y join design plus a little more power and more low to mid torque which is much appreciated in the AWD. As for fuel economy, one tends to drive harder after fitting one so naturally it will use more but I reckon because it has more low to mid range torque will help with fuel consumption. I also always shift manually and is in 5th at just over 40kph and reving at 1200rpm.
Just make sure you order the AWD one. the difference is the AWD rear pipe forms a circle shape as it curls around whereas the FWD version is more like a rounded corners square shape.

So the AWD headers are a better shape, from a flow point of view?
Will the AWD headers fit the FWD platform?

Also, ran up and down the freeway the other day - used 15/100 running from Murray Bridge to Adelaide, and the return trip reduced the average back to 13.4/100 - this is from the trip computer, running LPG.

As the Mitsi supplied sticker says on my rear widow "Love That Car". I can usually get about 525-550 k's city and 800k's country travel. My Magna is stock standard and I love it. For it's age it still looks new and handles like new. It is regularly serviced and only had 1 timing belt change at 100 thousand k's. Other than that no other major work. My lancer of the same age 10years and 300 thousand k's does use a bit more fuel than most lancers but I put that down to ' not me driving' but the other halfs.

Tlmitf, I don't think there is any difference regards to flow between the FWD and AWD headers. The AWD headers are round because it has to bypass some restrictions. As for using the AWD on the FWD, not sure. It is not possible the other way around.

My tj Sports manual manages max of 560km per tank in regular suburban traffic with "normal driving"

Last fill up, all in the city (Canberra):
http://i26.photobucket.com/albums/c104/spetz83/CAM00007_zps645a4bf2.jpg

In my previous job, I had a pool of vehicles at my disposal. I had a set 726km route I drove with 3 of my family members (99.5% highway) in many different vehicles, so I can now give you not only my Magna's outcome, but compare it (apples for apples) with other vehicles..

Same passengers, same route, different vehicles.
2013 VW Amarok (auto 2.0L bi-turbo diesel, 13,000km on the clock) = 9.2L/100km
2012 VW Passat (auto 2.0 L turbo diesel, 22,000km on the clock) = 6.4L/100km
2012 Toyota Kluger KXS (auto 3.5L v6 VVT Petrol, 19,000km on the clock) = 9.4L/100km
2011 Toyota Rav 4 CV (auto 2.4L 4cyl VVT Petrol 31,000km on the clock) = 8.8L/100km

To my continuing astonishment, my 2001 TJ Magna auto (HUGE $3,000 investment!!) with a 3.5L V6, 163,000km on the clock, returned an amazing 8.1L/100km....running BP 95 octane...when I had finished the 726km, it still said it had 1/8 of a tank left !!!

Car is completely mechanically unmodified, however I have recently cleaned MAF sensor, installed new front bank spark plugs, cleaned throttle body, had it serviced (including gearbox flush) and gave it 2 tanks of injector cleaner (1 bottle per tank to be sure!) :hmm::yeahthat:

I am absolutely amazed, astounded and in awe of this machine given its age the (not so modern) level of sophistication by todays standards, and its purchase price...An amazing vehicle !

My daily driver a 07/2000 Mitsubishi Magna TJ Sports metallic red, Auto. 6G74 3.5L No engine modifications. Near new standard factory sports exhaust.

Always use 95 octane fuel, sometimes 98.

I usually average about 10.5L per 100km, 70% hilly highway driving.

A 120km trip, 9.2L per 100km, cruise on for 70% of the time. Speed 110km/h, up and down hills for most of the journey.

The car has 193,000km with its original engine and transmission. I bought it over 3 years ago at 146,000, was not well looked after and over time I got the radiator replaced 2 years ago and rocker gasket covers replaced a year ago or so, along with the exhaust a few months back. Paint fairly good but a few chips, clear peeling off from spoiler, front and rear bumper minor damage. Bonnet resprayed last year due to the fact clear was peeling off areas that were poorly touched up. Got new tyres for the aftermarket 17x7 rims. Its a pretty good old car and will serve me for several more years.

Mine is sitting in the 14's doing an average of 34 km/h... :(

My newly purchased '03 TL VRX LE 5 spd has been sitting between 11.4 and have just gotten as low as 11.1 L/100km.
Bog standard car, driven mostly easy with a few short overtakes, etc on a combo, but mostly hilly, windy country. Hasn't been loaded at all.
I live up a windy mountain road, and have been using on the weekends just for a run. Usually leave it in 5th mostly (my daily is an 86 Skyline 5spd which bizarrely seems happier to sit in 5th to even lower speeds, so I am still used to that). Easy on the throttle mostly, smoothest changes etc.

Would this be typical roundabouts?

Verada KH getting around 18-19L/100km city driving, terrible. Swapping out the O2 sensor hopefully fixes it.

Now getting 8-9l / 100kms in my TE wagon with 3.8L. 50/50 highway/stop start traffic.

Now getting 8-9l / 100kms in my TE wagon with 3.8L. 50/50 highway/stop start traffic.

That's pretty bloody good economy right there. Haven't checked your other threads, so can you tell me if this is with a custom tune?

Hit 270,000km on my 2001 Magna wagon the other day
Got the timing belt, fan belt, water pump, brakes, and oil changed and added some Proma MBL8 anti friction additive and runs as good as new again. Now fuel consumption is averaging 10.5l/100km city driving
Prior to the service I could not get anything below 13l/100km.
Cheering.

Just driven to Sydney again from the Gold coast with my 03 TJII auto, stock except a Sports exhaust and a K&N Filter, got 8.2l/100klm's on the freeway sitting on 115klm's mainly and been driving into the city every day mainly down the M5 and have not gone over 8.6l/100klm's.

That's pretty bloody good economy right there. Haven't checked your other threads, so can you tell me if this is with a custom tune?

Don't believe so, it's just a standard TJ ECU with standard 3.5L tune.

Just completed a drive from Canberra to Adelaide in the current 40ºC+ temperatures, with the aircon. on almost all the way. Overall, I obtained 8.6l/100 in my TW VR-X AWD.

This is the trip I did last night from Sydney back home Economy doesn't really get any better then this


https://www.dropbox.com/s/711exrcphoka36a/20140115_103015.jpg

https://www.dropbox.com/s/knpx2puz0s629s8/20140115_103024.jpg

https://www.dropbox.com/s/zrzlefhod0t92sl/20140115_103022.jpg

https://www.dropbox.com/s/4qjf3814rbcqrhx/20140115_103027.jpg?m=

We need a "like" button. :)

Home to Wagga and back with some local driving on new years day in my SII manual TJ VRX 1003km's on one tank (1km further then I achieved in my heavier auto 380 so the 380 still wins having a smaller tank) lol

Got down to 6.6L/100

http://i867.photobucket.com/albums/ab231/kif_380/F2D55B00-079D-4F03-A3AF-3E3393050E09-3013-00000330050AE524_zpsf8ae0341.jpg

http://i867.photobucket.com/albums/ab231/kif_380/075FFF65-23A1-4A20-9497-3F90BC04D208-3013-0000033046DB593E_zps6e48a6c9.jpg

http://i867.photobucket.com/albums/ab231/kif_380/B52AFD06-6C4B-42F7-96CB-1835BECD9068-3013-0000033064347C2C_zpscd2b7e27.jpg

Driving around in Sydney saw the consumption rise slightly to 7.1L/100

http://i867.photobucket.com/albums/ab231/kif_380/78778FC9-C673-4F55-B129-65AC57008C5E-3013-000003307AD6D8FC_zps64a3b922.jpg

1003km's

http://i867.photobucket.com/albums/ab231/kif_380/F60A6AE2-D291-4E40-8D39-5FB3F6640B07-3013-0000033083D8202F_zpsb882db06.jpg

Car started conking out turning into the servo

http://i867.photobucket.com/albums/ab231/kif_380/AC359E44-41E7-4899-A8F8-80DA75FFFBC8-3013-000003308EFFBA0E_zps47c37c86.jpg

And once filled up a new range to empty of 1000km's!!!

http://i867.photobucket.com/albums/ab231/kif_380/D9AC54B6-1FE4-4EA3-A584-5B3628E0A7A3-3013-00000330A2101941_zps3190a4ab.jpg

Not bad for a $1000 car lol

http://i867.photobucket.com/albums/ab231/kif_380/8C0CBB4E-373E-4DB3-AD9F-82527C35449E-3013-00000333FC057577_zpsfe493a63.jpg

99 TH Exec, 3.0L V6 Manual transmission. completely bone stock everything with a stuffed exhaust. driving isn't like a granny but i don't drive it hard all the time. combination of highway and town driving and i only filled the tank to the first click and did 650 klm till the fuel light started going on and off.

Mine is an absolutely stock '01 TJ Advance. It has an original 102xxx Kms on it. Most of my driving is around town and to and from work. I get an average of 10.2 L/100 Kms. My young bloke has an '02 TJ LE with 145xxx Kms. Most of his driving is to and from work but all in 100 km zones. He is averaging 9.6 to 9.8 L/100 Kms. We have actually worked it out, not just relied on the trip computer (although it is very close, within 0.2 of a litre per 100 Kms) before my daughter's TH Advance got tagged at a set of lights she was getting around 10.2 to 10.5. Not too bad considering they are both P platers. I have no complaints about the economy of the Magna.

I just did my first tank in my newly purchased ralliart tj and did 520km...I probably could have pushed it to 550km. That is city driving. What mileage are others getting with their ralliart? I honestly didn't expect to achieve this number due to the factory mods and revised ecu from the showroom :)

I should also say that when I filled it up, I could only get 60ltrs back in the tank...do they run a 71ltr tank?

I'm sitting around 780kms... approx 9.2ltrs/100kms

My TJ-VRX Auto gets the following:
Avg Fuel: 14.5 L/100km's
Distance per tank: 450km's
Amount of fuel filled when light comes on: 60 litres
Avg Speed over that tank, aroune 26km/hr.

I am always in 50/60km zones, car never travels over 60km/hr.

I guess if I drained the car to truue empty, and filled up 69.9 litres, then I'd get 500km's Range.

Car is fully serviced, its drank like this since purchased at 90,000 km's.

If I drive in sports mode, and keep car out of 5th gear, my average has been 13.7

Boosty

I get about 800 roughly with highway driving, or about 600 roughly stop start.

My 02 TJ Auto LE gets about 10L/100k's around town but on the road I've had it down as low as 5.5L/100k's on flat country, fully loaded with aircon on with an average country drive around 7.5/100. aircon is used all the time and cruse control. It's done 270,000+ and usually run on E10(fitted with gas option engine) I cane it overtaking. Mechanic tell's me it still drives like a new car. The only time the fuel economy was bad was when the garage "adjusted" the throttle body. The fuel gauges are never true. the light comes on with 150Km's on the trip meter still left and I've had three fitted. It's a great car.

The light flashes based on how much fuel is left, not DTE as DTE varies depending on average and instantaneous fuel usage.

We went to Ardrossan on Monday. Total distance of 280km and used 25L. That is 9L/100km. It was actually 8.5L/100km to there and 9.5L/100km back as I had to do lots of overtaking of 4WD towing caravans on the way back. Not bad for a 1700kg GTVi AWD 5SPD auto with 250kg payload totalling 1950kg. Both trips were with A/C on and cruise on. On the flats, instanfaneous use was as low as 7.0L/100km holding 110km/hr. These cars have very good aerodynamics with Cd of 0.26.

i find it difficult to answer how many Km's per tank. If i drive till I'm empty then i would know how many km's out of a tank of fuel.
I don't usually wait until my low level light is on before i fill up. I don't like to run it too low in the tank, when i fill up, i see that i have used
50 to 60 litres of fuel. Around town, about 450km to around 50 to 55lt. Mostly taking it easy. So how many litres is the tank size?

71L if it is a FWD sedan. Can't remember what FWD wagons are. AWDs are 65L.

AWDs are 65L.

Are you sure about that Vlad? My manual says that my AWD has a 70L tank. I've used more than 63L a few times. Was I closer to walking to a petrol station than I thought?

Are you sure about that Vlad? My manual says that my AWD has a 70L tank. I've used more than 63L a few times. Was I closer to walking to a petrol station than I thought?
Lol. You are right. My bad. Just checked. It is 70L. One litre less due to the tail shaft. For so.e reason I have always had 65L on my mind. In fact, the few times I filled up 63L I was thinking at the time that was close.

Love the colour Man

99 TH Advance wagon - stock - 190k on the odo Economy - 500km - 54l - ave speed 44km/h (Canberra driving) - 10.8l/100k - Shell U98 --- not too bad for the old girl. :happy:

2002 KJ S2 GTV - 550- 580km on a tank, mainly city driving with some hills driving.

128,000km ODO

i get roughly 750kms to a tank. mixed between highway and around town driving. need to a service though as am averaging around 450-500 kms. have had her down as low as 7l/100kms that was the day we drove from gawler to moonta a few months back.

my car has done over 302xxxkms on original motor and has all major service history. was surprised when i looked at it as didnt blow smoke or have the oil burning smell
got it when it had about 280xxx on the clock

71L if it is a FWD sedan. Can't remember what FWD wagons are.

3rd Gen wagon tanks are supposedly 64L.

I just did a long trip and I can hardly believe what i'm seeing. 715km before the reserve light came on, or 8.6L/100km to my calculations (will get 61-62L in the tank if I fill up now) and thats with a lot of full throttle overtakes, and cruise control set to 103kph
That is the ONLY time I've ever felt my cars economy was acceptable. Typically on the same trip in the exact same driving fashion I get 10L/100km. And around town its always 14L/100km whether I drive it 'normally' or using all the power as much as possible makes little to no difference
Nothings changed, so stuffed if I know what happened

99 TH Magna Wagon Solara 3.5 Auto with 655,000kms on the clock, no mods just maintained extremely well shes averaging 620kms per tank city driviing

2001 TJ Magna Si about 334000 kms. Gives me 810 from a tank mainly driving to town and back 50kms each way - not highway. Hubby gets about 100kms less :)

03 TL VR-X, 178000km...purchased last week and went through the first full tank over the weekend with about 30% city driving and 70% from Penrith to Medowie and back via Stockton and Cessnock. 95 RON

The fuel light came on at around the 570km mark.

I'll fill it back up to full today and see what my usual driving means for fuel consumption (probably 100-150km/week, mostly city driving)

1150kms from Hobart to Adelaide (via the ferry for the smart arses)... Computer indicated 9.3/100kms which was verified as very close at each fill.
Think it is a 70 odd litre tank? If so, puts theoretical range at 750-odd kms.
3.5 5sp KL GTVi with 158ks on clock.
Just serviced with HPR15.

2003 TL Chassis 300,000 - engine ~110,000.

Everything engine related brand spankingly new (aside an O2 sensor - whoops) - Just drove from Adelaide (Bolivar) to Pt Pirie last night (2.5 hour drive, so 250kms?) at mostly 110km/h and I got 8.8L/100km with the 3.5 & 4 speed - so about half a tank on the gauge.

With a 1 ton 12x8 "aerodynamic" box behind it on the way back we got ~12.5L/100km - almost a full tank on the way back (pirie -> bolivar)

Holy shit this thing is not economical at all - maybe I'll get a better result with a new O2 sensor though.

2000 KH Ei verada 3.8ltr chassis 206500 engine 185000-190000 there abouts
I drive from wantrina to collingwood 6 days a week using the eastern freeway, i average 10.5 per 100ks,
I usally get about 590-600ks a tank using 98 octane.

Matt.

In a Ralliart Magna Manual with a 3.8L 6G75 motor.
I got 7.0L per 100km and drove from Mount Martha VIC to Adelaide in SA on one tank.
About 780km on 91 octane.

Depends on what fuel i put in roughly 400 to 550

03 TL VR-X, 178000km...purchased last week and went through the first full tank over the weekend with about 30% city driving and 70% from Penrith to Medowie and back via Stockton and Cessnock. 95 RON

The fuel light came on at around the 570km mark.

I'll fill it back up to full today and see what my usual driving means for fuel consumption (probably 100-150km/week, mostly city driving)

Update of sorts on this...been averaging around high 12s/low 13s with anything ranging from 91 (which is what I've got in there at the moment) to 98 ULP. No highway driving or longish trips whilst I had the transmission issues, so was all city/town driving.

My current run is up to about 380km, and the fuel needle is a smudge under 1/4. 91 ULP (and it was filled at a 7/11 so it'll be Mobil).

I bought a bottle of fuel system cleaner earlier on in the week to put in with the next refill to see if it has any effect...will probably stick with 91.

Okay, the tank's been filled to full with Caltex 91, and I put a full bottle of Wynns Complete Fuel System Cleaner in at the pump.

The trip computer said 480km and 61.8L used for the last run (bowser got to 62.2L before it clicked off).

2000 KH Ei verada 3.8ltr chassis 206500 engine 185000-190000 there abouts
I drive from wantrina to collingwood 6 days a week using the eastern freeway, i average 10.5 per 100ks,
I usally get about 590-600ks a tank using 98 octane.

Matt.

Update :D,

Since Work has been done to the vehicle I'm still running 98 Octane with out a 98 tune,

I get around 500 - 530 kms a tank Doncaster To Collingwood Everyday

Cheers.

1998 tf executive always have the aircon running and pretty much always driving like im racing for pink slips 500 ish mods are hi flow cat and custom sidepipe exhaust

So I posted earlier back in this thread about constantly getting 14L/100km regardless of how I drove it, gentle or foot to the floor as much as possible, it always returned just over 400km to reserve or 14L/100km. And the absolute very best I could possibly do was about 10L/100km on absolutely nothing but highway, or if I drove it so slow and with so little braking that I made scooters seem like rocket ships
I went through absolutely everything I could think of and never found a problem on the car. I was convinced you were all liars, blind/dumb and can't read numbers, or there was something massively wrong with my engine or ECU despite it driving perfectly fine

Well i've since moved and have been beating on the throttle actually trying to use more fuel, because I can't get it worse than 10L/100km. ~400km to ~600km from a tank, massive difference. I actually can't believe it, i've never seen my trip meter so high. It's gone from something thats been sucking me dry to a pretty economical car. Traffic conditions are different sure, but I still use full acceleration getting to highway speeds, lots of foot through the corners and everything off the lights up to the speed limit if i'm in front. And yet my fuel consumption here on the Gold Coast driving hard is still massively better than its ever been driving gentle in Cairns. Taking into account the huge difference in fuel prices (~100c vs ~125c) it is literally 50% cheaper to run.... even moreso if I drive it gentle