very low MPG any reasons to why ???

[mk5 gti :)]

hi am new to this forum :) but the problem am getting with my 05 gti AXX engine is that the mpg is very low in the region of 17 to 20mpg jus wondering to any commen reason to why...also gettin 200miles out of a full tank of fuel which dont seem right as people are gettin way more with driving the car with a heavy foot  any suggestions are welcome thanks

[Saint Steve]

Live in Central London?? or high density area fella??

[winrya]

Doesn't sound right, round town you should be looking at 300 miles to a tank, I just did 450 miles on one tank of motorway driving and that's stage one revo. Very pleased

[john_o]

sounds a tad low tbh but basics first.

95 or 98/99 RON fuel?
general usage over what distance/speed etc (like Steve has asked)
when was the car last serviced?
all tyre pressures ok?
air con on all the time? + do you have any extras that may impact mpg? (e.g. stereo systems)

from their its health checks on the car DV/PCV etc , maybe including VCDS logging to check parameters for things like boost etc are ok

Is the car totallly standard ? has it always had poor mpg?
a quick check is to find a flat road and check the instantaneous consumption figure in 6th @70mph

[Hedge]

Have you borrowed my car? 

[Top Cat]

Have you borrowed my car? 

 

[vRS Carl]

Have you borrowed my car? 

Have you dropped a couple of cylinders 

[bacillus]

I'm betting on a torn dv.

[mk5 gti :)]

thanks for the reply's i do live in london lol the car gets used on a daily baises and genraly doin 70 motorway.
the DV vale has been changed to latest version but i still think its faild because i can still hear the whistle of some sort will have to check
is thier anyone who can put in on the vcds for me in the london area or a good garage that knows about GTI'S as i also want my small cam chain tentioner changed coz it seems to make a loud rattle (like a deisel)

[Boothy]

There is a thread on here somewhere that has a list of members willing to help with vagcom but I can't find it for some reason. SOmebody reading this will know where to find it though. As for sounding like a diesel, welcome to the club mate! Mine is an AXX engine and when I replaced my totally shafted DV it did improve MPG by a bit but only by about 3-7 mpg on my usual drive to work. As a comparison I put £20.00 in and usually get around 140 miles I believe (don't often check) on Vpower with an average MPG of about 30-33 mpg.
 
Hope you get it sorted bud.

[vRS Carl]

Im will be home in Folkestone if you fancy a drive this weekend