displayed average mpg

The MPG calc reads about 3mpg low on mine. i.e. it says 29mpg and you've actuallt done 32mpg. The best I managed on a run was 31.9mpg, which when worked out on paper was 35mpg. Not too bad IMO, considering that was mixed driving including school runs etc.

Rich
 
Right red light just came on, so thought I'd work out the mpg, currently showing 29mpg which is town driving, and I've worked out I'm actually getting 32mpg!! So mines reading 3mpg out, best I ever get is 37-38 on motorway so that means I'm actually getting 40mpg on motorway, not As bad as we think tbh!