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Model specific boards => Golf mk3 => Topic started by: spudboy6 on 30 April 2011, 14:13

Title: Bad mpg ? Causes
Post by: spudboy6 on 30 April 2011, 14:13

Right so I put £20 of 95ron fuel in (15L) and get around 100 miles int 1.4 8v is that about right ?

Also is there any common problems with the fuel gauges because at times it drastically drops right down to empty then goes back up after a few miles ?

Title: Re: Bad mpg ? Causes
Post by: rcsammy on 30 April 2011, 14:37

well thats around 34 miles to the gallon which doesnt seem too bad depending on how your driving

I havnt done much driving in my golf 1.4 but my astra 1.4 averages 30-35 most of the time... but i dont drive that economically
If i keep my foot to the floor it will go down into the 20's

Title: Re: Bad mpg ? Causes
Post by: Gash on 30 April 2011, 14:57

try dealing with 24 mpg

Title: Re: Bad mpg ? Causes
Post by: dom on 30 April 2011, 15:11

Tbh that's about what I got in my 1.4. I found that it was mainly because you have to thrash it just to keep up with the general flow of traffic.

In terms of regular day to day driving my Gti gives me about the same fuel consumption as my 1.4 did, simply because you don't have to drive it as hard.

Title: Re: Bad mpg ? Causes
Post by: Wayne on 01 May 2011, 00:15

Sounds about right tbh  :smiley:

Title: Re: Bad mpg ? Causes
Post by: Shady Pioneer on 01 May 2011, 00:59

Yeah, sounds about right. My old 1.8 GL saw me about 50 miles per £10 so I'd say it's okay.

Title: Re: Bad mpg ? Causes
Post by: VW BUSH on 01 May 2011, 01:11

My new GTI is getting me around 30/34 the old one gets 25/30, thats what trying to get more horses does to your wallet :rolleyes:

Title: Re: Bad mpg ? Causes
Post by: kat975 on 12 May 2011, 09:28

My mpg is awful, I'm lucky if I get 60 miles for £20  :sad:

Title: Re: Bad mpg ? Causes
Post by: mani12354 on 12 May 2011, 09:32

that sound about right atm on my gti 2.0 16v im geting between 30 - 40 mpg but when it idels it drinks more LOL!  :shocked:

Title: Re: Bad mpg ? Causes
Post by: Wayne on 12 May 2011, 09:32

Quote from: kat975 on 12 May 2011, 09:28

My mpg is awful, I'm lucky if I get 60 miles for £20  :sad:

Sounds like it is running rich, would be worth replacing the temp sender as a 1st step.

Title: Re: Bad mpg ? Causes
Post by: mani12354 on 12 May 2011, 11:14

try checking the inlet manifold  cable which runs at the back of it to the ecu, and also give ur throttle body a clean!

Title: Re: Bad mpg ? Causes
Post by: thai-wronghorse on 12 May 2011, 11:46

Fuel gauges are notoriously ghey on mk3's due to the idiotic fuel tank design.

Title: Re: Bad mpg ? Causes
Post by: dom on 12 May 2011, 15:19

Quote from: thai-wronghorse on 12 May 2011, 11:46

Fuel gauges are notoriously ghey on mk3's due to the idiotic fuel tank design.

And a poorly designed sender :wink:

Title: Re: Bad mpg ? Causes
Post by: spudboy6 on 12 May 2011, 20:45

Quote from: mani12354 on 12 May 2011, 11:14

try checking the inlet manifold  cable which runs at the back of it to the ecu, and also give ur throttle body a clean!

I've found some fault codes

Co2 sensor -changed
Idle speed sensor ?
Idle speed limit exceeded i think  I'll find exact codes later ,

What do I need to check on that ecu cable ?

Cleaned the tb and mass air flow sensor , changed plugs and air filter and a service still not much better .