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How accurate is computer MPG reading?

Discussion in 'RS4 Forum (B5 and B7 Chassis)' started by sixsr, Aug 18, 2008.

  1. sixsr
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    sixsr New Member

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    [Aug 18, 2008]
    I'm just wondering how accurate people find the MPG reading on their computer?
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  3. Macduff
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    Macduff Member

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    [Aug 18, 2008]
    About 5-10% over optimistic.

    Can't understand why it should be considering how accurately the fuel is supposed to be delivered to the engine.
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