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fuel or speed

  1. adv fuel/speed update frequency

    Range Rover Mark II / P38
    Hi just how often is the adv fuel / speed readout meant to update, I've had it 6 weeks, only done 350 miles but the consumption has slowly gone down from 15.9 to 15.6 and the speed has been constantly on 20. Is it broken or am I just a very steady driver.
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