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  1. #1
    simonwjones's Avatar
    2nd Gear

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    How accurate is your dis

    My previous A6, 1.9tdi 130 had no dis and I always worked on a figure of Ł10 of fuel would do me about 75-80 miles.

    I now have a 2.5 tdi 180Q sport and am getting 100 miles to the same Ł10 of fuel.

    Strange as I expected the consumption to go down. Based on this I have calcuted that my average consumption is 42 based on 93p per litre.

    My DIS shows an average consumption of 31mpg.

    Now I wasnt expecting it to be accurate but this is miles out.

    How does you DIS compare to you manual calculations?

    Cheers

    Simon
    A6 2.5tdi Quattro Sport 180
    A6 1.9tdi Avant ................. Gladly missed
    A6 2.8 Quattro .................. Sadly missed
    Quattro 2.8 Coupe ............. Sadly missed

    RNS-E, Audi BT, Phatnoise

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  3. #2
    Reverse Gear

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    My previous car (2.5tdi sport avant multitronic) registered about 33-35 mpg average on the DIS (too many stop/start/short journeys), which when I calculated it back from fuel receipts/mileage records, was pretty accurate. I could achieve 40-42 on a long run but I would have to be driving very carefully.

    My new 3.0tdi is not as good (but improving as it loosens up) but the DIS is still fairly accurate (30-33 mpg).

    I'm assuming you are comparing like-with-like, as diesel costs have varied by as much as 10% over the last 18 months or so.

  4. #3
    Reverse Gear

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    My 2.5TDI consistently shows 1.5mpg worse than the real figure. The real figure varies between 28mpg and 37 (the latter on cruise control on motorway).
    Allroad 2.5tdi 2001

  5. #4
    Neutral

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    I have 3.0Tdi with 18000 miles. The DIS was regularly 6% or thereabouts optomistic. Since the service about 1 month ago, it seems to be about right, although I have only made one long journey (200+ miles each way) and got about 40 mpg. Normal use gives about 32-33mpg

  6. #5
    fjtwelve's Avatar
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    My figures are almost identical to Mr Adams above, over the last 56000 miles.
    2001 A6 Avant 2.5TDi quattro Sport 180hp+TurboDynamics MD438 hybrid+Bosio Race683s+3" exhaust+Celtic Tuning remap - now with adamss24 replaced with runabout
    2007 BMW 535d AM Sport + Celtic remap
    2004 A4 Avant 1.9TDi quattro Sport 130hp + Superchip - sold & replaced by
    2005 Audi TT 1.8T
    1988 Yamaha FJ1200 120hp finally traded after 23 years for
    1986 Yamaha FJ100 (1300 barrels shhh!) with too many bits to mention
    2011 BMW 320d M Sport son #1
    2004 Suzuki SV650 S son #2

 

 

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