Kyle T
Premium Member
Registered: 11th Sep 04
Location: Selby, North Yorkshire
User status: Offline
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Posting on behalf of a friend who bought a brand new Astra GTC earlier in the year.
He's basically had low 20's out of it since owning it which he feels is excessive based on the performance of the car. After wondering for a while whether his car had a dodgy map from the factory, or a mechanical fault causing the poor MPG - he's finally got bothered enough to look into it to find many people seem to have the same issue.
He's not ragging the car around on boost all the time, his drive to work is mainly 40-60mph A roads in traffic and he's toyed with higher octane fuel to see if that yielded significant improvements.
I half suggested a remap this morning, maybe a custom map could be produced to improve the fuel economy with little to no focus on performance gain. I think he's going to look into it properly, but having access to CS I thought I'd come and ask a vauxhall question for once 
So, does anybody own one of these cars or know much about them? How are the remap solutions for this engine etc?
Lotus Elise 111R
Impreza WRX STi
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scoob
Premium Member
Registered: 16th Oct 03
Location: Beverley, E Riding of Yorkshire
User status: Offline
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Was the car brand new.? They tend to loosen up after some mileage is put on them and it may get abit better.
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Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
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Is it the 1.6 turbo if so they are thursty I have a vxr corsa you have to have a light right foot to get anywhere near 30mpg thats in a smaller car
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deano87
Member
Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
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What does standard say?
It's under warranty. Just get Vaux to have a look make sure it's all running fine.
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sc0ott
Member
Registered: 16th Feb 09
User status: Offline
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Is your mate andrew
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Kyle T
Premium Member
Registered: 11th Sep 04
Location: Selby, North Yorkshire
User status: Offline
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The car was brand new aye, but it's got 7500miles on it now. The economy was expected to improve, but it's been nothing tangible.
It's the 1600 turbo aye.
Parkers says 39mpg
Lotus Elise 111R
Impreza WRX STi
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Ian W
Member
Registered: 8th Nov 03
Location: Wirral, Merseyside
User status: Offline
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quote:
Originally posted by sc0ott
Is your mate andrew
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Online
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I get low 20s from my Z20LER, the way to test it is to get on a motorway, reset the count and put the cruise on at 50. If it gets in to the 40s there, its fine.
I would expect it to be better than an older 2 litre but not sure on the gearing / weight / driving style, those could all affect it.
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Ben G
Member
Registered: 12th Jan 07
Location: Essex
User status: Offline
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You'll need a lot more than 7500 miles on the engine to acheive book mpg figures.
Expect 20's round town and mid 30's on motorways.
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belton
Member
Registered: 23rd Jul 09
Location: Kent
User status: Offline
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quote:
Originally posted by Kyle T
The car was brand new aye, but it's got 7500miles on it now. The economy was expected to improve, but it's been nothing tangible.
It's the 1600 turbo aye.
Parkers says 39mpg
I think Parkers say an astra vxr does about 22urban and 40 extra urban.
When I owned mine I never ever ever touched about about 37mpg on the motor way
I would take what Parkers/manufacturers claim with a pinch of salt
Just -5 of there figure and its probably slightly more accurate lol
[Edited on 10-11-2012 by belton]
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