Tricky-Ricky Posted November 23, 2014 Share Posted November 23, 2014 The trouble is average fuel computers lie, the only real way to know for sure is to brim the tank and see how much you have to add next time. Quote Link to comment Share on other sites More sharing options...
Mikey81 Posted November 23, 2014 Share Posted November 23, 2014 I calculate mine from fill ups, I can't stand only chucking £10-20 of petrol in a car so makes it quite easy. My trip computer under reads by 1.5mpg, which I reset when I fill up Quote Link to comment Share on other sites More sharing options...
Svothe Posted November 23, 2014 Share Posted November 23, 2014 http://www.350z-uk.com/topic/91630-mpg-i-know-it-comes-up-a-lot/ Another mpg discussion, lots of info buried in there! Quote Link to comment Share on other sites More sharing options...
JB-) Posted November 23, 2014 Share Posted November 23, 2014 The trouble is average fuel computers lie, the only real way to know for sure is to brim the tank and see how much you have to add next time. Last fill mine had done 22.88 mpg by the pump. The computer showed exactly 23 mpg. That's the most accurate I've had in any car. In my last 3 cars, BMW 3 series over read by about 1.5 mpg, my first Octavia vRS by 1 mpg, and my second one by 0.5 mpg. Quote Link to comment Share on other sites More sharing options...
Ebized Posted November 23, 2014 Share Posted November 23, 2014 Anywhere between 15 on a good day and 32 mpg on a bad day , but really dependent on the right foot and mine erred on the heavy side Quote Link to comment Share on other sites More sharing options...
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