I have had my trip tell me over an average journey of 564 miles that I was getting 72.4mpg average. I then calculated the mpg from the mileage and filling it (number of litres) and had got 49.7mpg. Recently my computer has only been a few mpg out (between 2-4mpg) on the last few tanks, but that is how accurate these things are! All in all I wouldnt rely on it one bit.
It also claims when I fill it up that a full tank will do nearly 800 miles and I struggle to get 600.
It also claims when I fill it up that a full tank will do nearly 800 miles and I struggle to get 600.