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Poor Fuel Economy

Posted: Sat Mar 21, 2009 1:33 pm
by Brad.
I've got a 1.4 8v polo. :)
I know it's not gonna be great on the motorway, but cruising at about 70-80mph going from Guildford to Gatwick and back.
Last night it used the best part of half a tank. Makes me think theres something wrong.

It has got an error that reoccuring - Misfiring i think. Would that play a big part or is it just down to the driving?

Re: Poor Fuel Economy

Posted: Sat Mar 21, 2009 2:11 pm
by alexperkins
how many miles was it?

Re: Poor Fuel Economy

Posted: Sat Mar 21, 2009 5:04 pm
by Brad.
Roughly 60-70miles.

Re: Poor Fuel Economy

Posted: Sat Mar 21, 2009 10:26 pm
by vw55raz
have u been using the air conditioning or heating at all??... what about ur driving style? shifting gears early?? and try avoiding harsh braking..

Re: Poor Fuel Economy

Posted: Sat Mar 21, 2009 10:31 pm
by turkpolo
i put £35 a week in my gti and it still cnt cope with it. Maybe the way im driving (hard breaking) ripping it apart in first and second gear :twisted:

Re: Poor Fuel Economy

Posted: Sat Mar 21, 2009 11:43 pm
by Brad.
vw55raz wrote:have u been using the air conditioning or heating at all??... what about ur driving style? shifting gears early?? and try avoiding harsh braking..
Had the heating on to get the car warm, then it was all the way round to cold with just the fan on the window on '1' to keep it clear...
It was mostly 5th gear, no braking just cruising at motorway speeds.
Thats what i don't get :/

Re: Poor Fuel Economy

Posted: Sun Mar 22, 2009 9:04 am
by alexperkins
Sounds like a possible dodgy lambda sensor, overfuelling, or your temperature sensor is foobarred.

Air con in the polos will make very little difference to the cars economy - its just a power zapper :P

Re: Poor Fuel Economy

Posted: Sun Mar 22, 2009 9:05 am
by alexperkins
turkpolo wrote:i put £35 a week in my gti and it still cnt cope with it. Maybe the way im driving (hard breaking) ripping it apart in first and second gear :twisted:
Answered your own question lol. First and second drink fuel soo much, and rip the gearbox apart too haha

Re: Poor Fuel Economy

Posted: Sun Mar 22, 2009 10:42 am
by turkpolo
lool :oops: it happened after i put the exhuast system n induction kit