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A4 2.0TSI - Acceleration lag on startup

Discussion in 'Audi S4/A4/A4 Cab (B8 Chassis)' started by Napbree, Jan 24, 2014.

  1. Napbree
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    Napbree Member

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    [Jan 24, 2014]
    Hey guys,

    A family member has an A4 Avant and on startup when it's cold, if you try and accelerate when its stationary or moving slowly there is a massive lag before anything happens. It's hard to explain but it's definitely not the lag of a petrol engine without a turbo.

    I did try and search the forum but couldn't find anything. Is this like anything that anyone has heard of? I've tried doing an accelerator reset thing which didn't work.

    It's a 2010 A4 2.0TSI Automatic Quattro Avant. It's only done 10k.

    Cheers
    #1
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  3. ScottishS3
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    ScottishS3 Well-Known Member

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    [Jan 24, 2014]
    It could just be the power band. The turbo doesn't seem to kick in till mid range revs. Mine was like that until I had the engine rebuilt and the new ecu update and now it's like a totally different car. It has much more power in the lower rev range now and no turbo lag like it did before.
    #2
  4. Daggerit
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    Daggerit Active Member

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    [Jan 24, 2014]
    I don't know for sure but my s-tronic seems to slip the clutch a lot just after startup when it's cold. Especially noticeable if it is trying to get up a slope as well.
    #3
  5. Napbree
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    Napbree Member

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    [Jan 26, 2014]
    Interesting, I noticed this morning that when I went to accelerate out of a junction, it revved and then clunked before it went forward. I haven't tried going up a hill yet, but I will try. Sounds like it could be similar?
    #4
  6. Daggerit
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    Daggerit Active Member

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    [Jan 26, 2014]
    Could be, don't know if it's just a cold clutch or what?
    #5
  7. AjM
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    AjM Living in Blissful Ignorance

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    [Jan 30, 2014]
    I am not sure about S-Tronic but the Multi tronic 7 speed defo suffers when its cold. But after about 20 secs its fine, it is usually just the first shift.
    #6
  8. Anthony566
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    Anthony566 Active Member

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    [Jan 30, 2014]
    My 2013 A4 defiantly has something limiting the car on cold startup as you cannot put your foot down when it's just been started it takes a few seconds .... I was assuming they had something in the ecu doing this ?? Or am I wrong and I need to be heading back to the garage ??
    #7
  9. Cyprio
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    Cyprio Member

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    [Jan 31, 2014]
    No I don't think you're wrong, my car does a similar thing.
    On a cold start, when I'm reversing out of my garage, and then change gear to move forward, there's always a few seconds delay before anything happens.
    #8
  10. viceroy
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    viceroy Member

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    [Jan 31, 2014]
    It wont be a multitronic because its Quattro.
    Either s-tronic or tiptronic.
    #9

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