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Thread: Poor MPG

  1. #1
    3rd Gear

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    Poor MPG

    Thermostat and exhaust both sorted but the car is running like pooh. Below 3k revs it drives like my OH's Polo. Also I only managed to get 24 mpg on the motorway.

    What are the possible causes of this? I'm too lazy to search because it's my birthday today and I went out last night and I'm very hungover and can't search in my retarded state of mind.

    And because it's my birthday you can provide me with answers, as a present.


    A4 1.8TQS

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  3. #2
    griswold's Avatar
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    Turbo comes in about 3000 revs whats it like after that?
    vag com scan it

  4. #3
    "Stick a V8 in it!"

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    MAF sensor?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
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  5. #4
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    I would answer but i am too lazy to bother......LMAO

    Could be loads of things from the temp sender, to the MAF to sticky brakes etc

  6. #5
    Broken Byzan's Avatar
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    I would answer but i am too lazy to bother......LMAO

    Could be loads of things from the temp sender, to the MAF to sticky brakes etc

  7. #6
    3rd Gear

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    Checked the inlet hose on the airbox and it was a little misaligned so may have been leaking air slightly. Managed to maintain 24 mpg through Brum today and felt a little more responsive but turbo lagging like fook.


    A4 1.8TQS

  8. #7
    "Stick a V8 in it!"

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    is the turbo lagging, or just not there at all?

    could be a blocked cat, or perhaps a broken wastegate?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  9. #8
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    Quote Originally Posted by aragorn View Post
    is the turbo lagging, or just not there at all?

    could be a blocked cat, or perhaps a broken wastegate?
    I don't know what's going on. I can hear it spool sometimes, but other times I put my foot down in first and it'll "stutter" slightly as it hits ~3k revs. I am thinking the wastegate is sticking too.


    A4 1.8TQS

 

 

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