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  1. #1
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    Auto or Econ heating?

    When in Auto mode, is it using the air-con compressor therefore using more fuel? And when in Econ mode, is it just a manual blower like in most non-aircon cars?

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  3. #2
    19scotty81's Avatar
    Push down and across !!!!!!!!!

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    Yip !!!


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  4. #3
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    Quote Originally Posted by 19scotty81 View Post
    Yip !!!
    Ok and what's happening when neither of these are selected?

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    19scotty81's Avatar
    Push down and across !!!!!!!!!

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    Compressor is running, the Econ button is like the off switch for the air con so if thats not pressed it'll still run


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  6. #5
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    I pretty sure auto just sends the air to the vents it thinks need the air (or what ever) but the econ button turns the compressor on/off.
    So if neither is pressed i assume it spreads the air to all the vents and is using the compressor since its not in eco mode.

  7. #6
    19scotty81's Avatar
    Push down and across !!!!!!!!!

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    Yes, if you doing this to save fuel you'll probably find there's no difference at all !!


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  8. #7
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    TBH I usually use econ mode, but occassionally use aircon just so the compressor gets some exercise as non use is not good for the unit, as it can get stuck or squeal with prelonged non usage.

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  9. #8
    kite's Avatar
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    I use "auto" all the time...
    A4 (b6) 2.5 TDi QS Saloon.

  10. #9
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    mine climate is completely off most of the time. one the car's warm there's not really much point keeping it on. saves me fuel too
    2006 Phantom Black A3 2.0T S-Line.
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  11. #10
    audicruiser's Avatar
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    Quote Originally Posted by kite View Post
    I use "auto" all the time...
    So do I. Just let it do it's thing in the winter and summer.

    As for it saving fuel... Not a believer of that old tale. Maybe 20 years ago on a Granada or Sierra but today engines and methods are designed to take the running onboard. The compressor won't run if the temp is below 5 degrees anyway, so that most of the the winter and in the summer if you don't have the aircon, people generally have the window open which causes drag and uses more fuel!
    Scott

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  12. #11
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    Quote Originally Posted by audicruiser View Post
    So do I. Just let it do it's thing in the winter and summer.

    As for it saving fuel... Not a believer of that old tale. Maybe 20 years ago on a Granada or Sierra but today engines and methods are designed to take the running onboard. The compressor won't run if the temp is below 5 degrees anyway, so that most of the the winter and in the summer if you don't have the aircon, people generally have the window open which causes drag and uses more fuel!
    obviously it'll be car dependent but Mythbusters demonstrated that below 40mph it's more fuel efficient to have your window open. the drag costs less fuel than the electrics running the air con.
    2006 Phantom Black A3 2.0T S-Line.
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  13. #12
    audicruiser's Avatar
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    Think I will stick with the Climate... Having the window down would mess my hair up!!!
    Scott

    Audi A3 Sportback 2.0T Quattro S-Line 2007 8P2
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  14. #13
    Gti Jazz Blue's Avatar
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    You should also run it on a regular basis to ensure that the seals are lubricated so that you don't spring a leak in the system.

    Well acording to my mate who is a mechanic and works on aircon systems.

    Paul
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  15. #14
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    i have mine on most of the time it doesnt really make any difference to the mpg on modern cars
    ​She is back on the road yay!!

  16. #15
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    On the facelift climate unit, the ECON button is AC instead
    Moved to the Darkside click below:

  17. #16
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    It does make a difference to fuel economy as there's a big load on the engine. Whether you notice, or care, is another matter.
    8P2 S3

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