Whenever I fill up I always reset the trip computer. I've been using the Roadtrip lite app as well as a comparison however on my Mk6 gti the trip computer always seems to be ~2mpg out. For example road trip calculates my last trips at 32mpg but the car tells me it's done 34mpg. Is there a way of 'hard resetting' the car because when I do the calculations the car would indeed be out?
Cheers
Andy