I have owned an 04 C-Max Zetec 2.0 TDCI for just over a year (bought May 08) and covered about 16,000 miles in that time. We have just returned from a holiday in Cornwall to North of Edinburgh and the C-Max covered the M74, M6, M5, A30 with no trouble.
The remote key fob has just failed (changed battery, may need recoding), the tailgate release switch failed (replaced with one from Tandy), and the trim round the gear-lever has worked loose, screen-wash filler cap has been lost and replaced with cap from an aerosol can and I suspect the screen-wash bottle has a leak as it half empties within 24 hours. Engine sound-deadening cover has split.
Not as much room or cubby holes as the 1998 Scenic I had before. Rear seats are heavier than those from the Scenic and don't adjust in as many ways.
Overall satisfaction very high and this is my fifth Ford (2 Fiesta, 2 Escort).