Originally Posted by MEGA
51 is still higher than the car can achieve at that speed. Try calculating it manually based on how many litres you put in the tank. I'd expect 45 or so as a highest figure, at least based on my own experiences..
I did 400 miles from Hampshire to Edinburgh lastnight, 80 on cruise most of the way, 60 miles of twisty roads, I managed 43mpg when I filled up at Shell and put the figures into my mpg calculator.
I think I could get 50 in a standard 335d but not remapped and not at 70-80mph.