fuel economy ..

**vividjazz** · 09-07-2005 09:15 PM

If the diameter of your wheels is different from factory then your speedo and odometer will be out. This will in turn result in inaccurate calculations by the trip computer resulting in inaccurate consumption figures.

Maintaining the wheel diameter is very important hence why Jazzers with factory 13", 14" and 15" wheels are all the same diameter because of different factory tyres with corresponding aspect ratios.

For a more though explaination see the Car Maintenance Bible at
http://www.chris-longhurst.com/carbi...yre_bible.html

**emp** · 09-07-2005 10:29 PM

oh ic ic i dont think there is something wrong with my driving style .. i hardly go over 3.5k rev hehe but yeah i think i'll ask them next service my wheels are stock from da factory ... its got a factory body kit but dats about it :P what normally cause da engine to eat up petrol like my one does??

**Andys** · 10-07-2005 12:40 AM

Originally Posted by emp

what normally cause da engine to eat up petrol like my one does??

Lots of short trips.

- Andrew

**emp** · 10-07-2005 12:13 PM

maybe dat is why :P i live in da CBD and my work is 3 min walk and i still drive :P hehe but lately its been cold :P and i work nite shift

**terris08** · 10-07-2005 02:52 PM

Originally Posted by vividjazz

If the diameter of your wheels is different from factory then your speedo and odometer will be out. This will in turn result in inaccurate calculations by the trip computer resulting in inaccurate consumption figures.

Maintaining the wheel diameter is very important hence why Jazzers with factory 13", 14" and 15" wheels are all the same diameter because of different factory tyres with corresponding aspect ratios.

For a more though explaination see the Car Maintenance Bible at
http://www.chris-longhurst.com/carbi...yre_bible.html

This is a very good point!!

**emp** · 10-07-2005 04:05 PM

my wheel is stock ...

**Tony** · 10-07-2005 05:40 PM

Originally Posted by emp

maybe dat is why :P i live in da CBD and my work is 3 min walk and i still drive :P hehe but lately its been cold :P and i work nite shift

Same here, in fact I'm worse.. my office is less than 100 metres from home and I still drive

my dash says 12.? litres/100km

**emp** · 10-07-2005 07:36 PM

lol is dat why :P if any 1 know where melbourne city audi dealer is i drive from there to vic market :P so its not because of my engine ???? umm but i think i still need to check it out

**ahcash** · 11-07-2005 10:39 AM

Originally Posted by emp

lol is dat why :P if any 1 know where melbourne city audi dealer is i drive from there to vic market :P so its not because of my engine ???? umm but i think i still need to check it out

Yes.. not very far from there to Vic Market.. However, the reading shouldn't be that bad... The most you will get is probably 8.xL/100km that sort of distance constantly... Not 12.xL/100km.

Having said that, I think the trip computer doesn't like short trips..

**Andys** · 11-07-2005 10:43 AM

Originally Posted by ahcash

Having said that, I think the trip computer doesn't like short trips..

Mate, the CAR doesn't like short trips. Until the engine is warmed up, the mixture runs rich, and the gear selection (auto) runs about 1000rpm higher than normal.

Starting the engine and driving it cold uses about twice as much petrol as normal. So figures above 10L/100km would be normal for frequent very short trips.... I don't think its too good for the car either to never be warmed up enough..

- Andrew

**TGZ-Jay** · 11-07-2005 03:10 PM

guys, i just got our jazz (manual) last wednesday 06/07/05 and when i got it out off the dealer with a full tank.. its already monday 11/07/05 and i already ran almost 400kms and only used half a tank. whooohoooo.... love the jazz!