GU 3.0lt fuel economy

Submitted: Monday, Aug 02, 2004 at 23:21
ThreadID: 15246 Views:2087 Replies:7 FollowUps:2
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I know there have been a few posts regarding this topic but I've recently purchased
a 2004 GU 3.0lt TDi auto (our first diesel) which had 4000kms on the clock. We have taken it to Syd to Maroochy & back with 7 people, air con on & luggage on the roof & it averaged 11.5lt/100kms. However recently with city driving (no peak hour) it is returning 13.5lt/100kms which, when reading previous posts, appears to be a little on the high side. (Still better than my EB Ford wagon.) The vehicle has only done 8000kms and I would like to know if this is about right & if it is true that mileage may improve as it runs in some more. Its a great vehicle & the view is also great. We should have made the switch earlier. Any comments appreciated.
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Reply By: W from Jerilderie Motors Pty Ltd - Monday, Aug 02, 2004 at 23:26

Monday, Aug 02, 2004 at 23:26
You will not run a diesel in @ 4000k, but by 40000 you will be run in though
AnswerID: 70991

Reply By: Member - Captain (WA) - Monday, Aug 02, 2004 at 23:39

Monday, Aug 02, 2004 at 23:39
Hi Frank,

Your consumption seems about right. In city driving its the takeoff from stops that kill the consumption. My peak hour running returns about 12 l/100kms, but thats freeway running with few total stops or acceleration to speed limit. If you have lots of stop/starts, thats probably why you are getting worse consumption.

Mine has now done 20,000kms and have probably improved 1 l/100kms over its 5,000km consumption average.


AnswerID: 70994

Reply By: Member - AndrewPatrol - Tuesday, Aug 03, 2004 at 09:43

Tuesday, Aug 03, 2004 at 09:43
I averaged 12.75 to Perth and back from Melbourne, 4 people and loaded roof rack. Get around the 14's in town but thats with tools in the back and heaps of stop/start. Mine is an auto with about 53k on it. Cant say I've noticed much if any improvement over that time. I don't check it a lot 'cos now I own it I gotta live with it. Heaps better than a petrol though.
AnswerID: 71025

Reply By: DARREN - Tuesday, Aug 03, 2004 at 13:28

Tuesday, Aug 03, 2004 at 13:28
My manual 2003 3.0 averages about 13.5l/km around town running 285/75/16's. Allow for a little odometer error due to tyre size and actual is a little lower. I too have read other posts about 1000km per (both) tanks but have to accept that for some reason 800-850 is all I will get. Mine has done about 33,000 now and there was a definate improvement after somewhere towards 20,000.
AnswerID: 71055

Follow Up By: Member - Captain (WA) - Tuesday, Aug 03, 2004 at 14:23

Tuesday, Aug 03, 2004 at 14:23
Hi Darren,

I found my GU speedo was out by 6% (read high) before I put the 285/75 tyres on. Now it is very accurate (reads 100km/hr at real 101km/hr by Garmin V GPS).

I have "tested" a few other standard GU's and all were out by 5-7%. The claims of 1,000kms per tanks is really closer to 930 due to speedo error. I regularly get 900+ kms from both tanks from peakhour freeway running, which would be around 1,000kms on standard tyres.


FollowupID: 331279

Reply By: JamieMac - Tuesday, Aug 03, 2004 at 14:32

Tuesday, Aug 03, 2004 at 14:32
I get 10.5-11L/10km out of my GQ 4.2 non turbo regularly 800-850km before refilling. That is with 32 BFG AT tyres. That was around town and with a bit of highway driving.

My new GU 4.2TDi is getting a worse figure ~750-800km based on the main tank only (same as GQ). I have not done a good run to test it as its only just done 3000km. I do feel I Am using the extra power though that the GQ lacked! Maybe that is the difference for me but I am hoping it gets better as it runs in. Driving to Perth later in the year so that will sort it out.

AnswerID: 71068

Follow Up By: JamieMac - Tuesday, Aug 03, 2004 at 14:36

Tuesday, Aug 03, 2004 at 14:36
Thats 10.5-11 L/100km and filling when it gets dow to E on the guage not when its actually empty
FollowupID: 331283

Reply By: brian - Tuesday, Aug 03, 2004 at 17:22

Tuesday, Aug 03, 2004 at 17:22
My 3 litre manual does about 8.5k/litre or around 900k on both tanks say 110 litres,dont totally empty main tank.It has winch b/bar full length rack and weighs close to 2800kg.I have 100000k on 2002 model.
AnswerID: 71094

Reply By: Member - Michael- Wednesday, Aug 04, 2004 at 22:05

Wednesday, Aug 04, 2004 at 22:05
Hi Frank

My 3LGU T/D gets around 11L/100km on the open road and about 13L/100km in town which as in your case was better than my EA Falcon. Don't forget the GU weighs in at nearly 2.5t
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AnswerID: 71340

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