1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

poor mpg after fuel filter change

Discussion in 'A3/S3 Forum (8L Chassis)' started by karl210, Sep 28, 2012.

  1. karl210
    Offline

    karl210 Member

    Joined:
    May 15, 2012
    Messages:
    229
    Likes Received:
    3
    [Sep 28, 2012]
    Ive been averaging 29mpg for a while on new maf, spark plugs, cts etc. i changed my fuel filter the other day now im averaging 15mpg! any ideas why? should i put the old filter back on haha. Ive checked to see if its leaking and its not, any ideas on this? im going to try disconnecting battery to reset the ecu and see how that goes. i just dont get this bloody car
    #1
  2. Ads

    Ads

    [Sep 23, 2014]

  3. Dani_B19
    Offline

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    7,282
    Likes Received:
    90
    [Sep 28, 2012]
    Mate i would t rely on the dash, i can literally reset the mpg counter and within 10 minutes my mpg can change from 28ish upto mid 50's, just reset it and have a drive around for a day or 2 and see how it is but like said ive never trusted the display.
    #2
  4. karl210
    Offline

    karl210 Member

    Joined:
    May 15, 2012
    Messages:
    229
    Likes Received:
    3
    [Sep 28, 2012]
    well ive reset it the other day but its still nocking around the 15mpg mark, its always been between 26-30mpg so its a bit odd really, ive unplugged the battery anyway and i will see how that goes and report back, cheers
    #3
  5. thegoal007
    Offline

    thegoal007 Another S3 owner....

    Joined:
    Apr 9, 2008
    Messages:
    736
    Likes Received:
    11
    [Sep 28, 2012]
    worth checking vag-com
    #4

Share This Page