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Audi A3 TDI - Using fuel

Discussion in 'Diesel forum' started by BlackQuat, Jan 22, 2011.

  1. BlackQuat

    BlackQuat Well-Known Member
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    We have a 2001 100bhp TDI A3.
    It's doing around 47 mpg on runs lately. I reckon it should be doing alot more.

    What are the first things to check? I have vagcom if there's anything worth checking using that?
    I've changed the thermostat and temp sensor. No better.

    Cheers in advance.
     
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  3. Fahim

    Fahim Member

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    Check for boost leaks with VAG COM to look for 'Requested boost and actual boost' figures.

    if requested boost is high and actual boost is low, you know you've got a leak somewhere! it'll also probably be smoking quite a lot.

    disconnect maf sensor and see how it drives. if its the same, then its most likely shot. exchange unit from audi costs around £70.

    what sort of run are you doing? how many miles?...motorway or town?
     
  4. BlackQuat

    BlackQuat Well-Known Member
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    Country side runs, about 15 miles aday, relatively easy runs, 80% of the drive is on a main road, ussual just in 5th rolling along.
    I was looking at the car today, whilst idling I disconnected the maf. The revs didn't change at all.
     
  5. BlackQuat

    BlackQuat Well-Known Member
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    Took it for a drive without the maf, and it was totally gutless.
     
  6. sulaiman

    sulaiman Member

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    Seems good to me, I get 37mpg around town, 45mpg on the motorway.
     
  7. BlackQuat

    BlackQuat Well-Known Member
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    My 2.5 tdi quattro is doing 45 on the motorway!
     
  8. HerefordQuattro

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    bloody hell wish mine did!
     
  9. swarcup

    swarcup Well-Known Member

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    **** me too!!!!!
     
  10. BlackQuat

    BlackQuat Well-Known Member
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    Sorry gents, I must be a gentle driver lol.
    I recently did a 300 mile journey to invergarry in scotland. Got there, filled up 44.8mpg worked out at the pump. I was rather happy with that.

    The A3 should be doing more.
     
  11. BlackQuat

    BlackQuat Well-Known Member
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    [​IMG]
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    Do these tell you anything? I'm not sure if that's normal
     

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