Completely reliable in the time I owned it.
I had a puncture and could not get the alloy wheel off (A common problem according to the RAC)
Tyres are expensive to replace.
Underpowered with an unrefined engine.
I'm 6'3" tall and did not fit comfortably in this car. No room for knees or legs.
Dealer service.. ha ha.. what dealer service. The Merc dealers are very arrogant and unhelpful, but they charge for this lack of help.
If you could not fit comfortably in it, why did you sign a contract to buy it?
I can agree with this comment. This C Class is a junk at its best. I have had all the plastic parts in the car break. Cheap Cheap Cheap. I didn't even buy the car and I still hate it. I got it as a gift and I hated it from day 1. Mine has 75,000 miles on it and it's falling apart already. You get what you pay for. Lesson learned for me: When someone buys you a C Class. Just say no. Give me an E Class.