Help - I have had my 56 plate 1.8 petrol Zetec C Max for just two months. It does get used for short runs combined with some distance work. The computer is giving me a reading of 23 mpg and after driving it with extreem care a tank brim test gave a return of 27 mpg. Its been back to the main dealer twice - they updated the soft ware and then changed the tank fuel pump as the car stalled a couple of times - neither of which have changed fuel performance. I have friends with the same model who talk of returns well in the mid to high 30s for combined use. I have searched the net butcan only find a few disgruntled drivers with the same problem but yetto find any real solution.I'm really happy with the rest of the car but its got a limited life expectancy with me if things don't improve !