When you're all taking the computer figures do you reset at the start of a journey? I've always left mine to run to give me a total average since I got the vehicle.
Actually that makes me think of another question, does the fuel computer take a total average or is it based upon the last so many miles? I ask because both me previous cars settled on an average figure which hardly changed yet the XC90's can be influenced on a single journey. Done 26K miles.
Thanks
Oh and I get around 400-420 miles per tank with typically half town driving in a 09 D5 auto.
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