Right deep breath, my wife's C-Max kept going into limp mode.
The car would also randomly refuse to start. Took it to a Ford dealer; after taking £330 pounds and two and a half weeks, no joy. After hiring an auto electrician, the error codes made no sense.
On the C-Max there is a known problem with water getting into the fuse box in the foot well, from the condensation from the air conditioning pipes. The only fix is to replace the fuse box, also known as a Gem panel or BCU (£384 to replace it).
Also the instrument panel controls the central locking and can easily fail, and can cause a ton of issues. Again Ford want £400+. Thankfully it can be repaired for around £140 by BBA; it's easily removed as it's held in by two screws.
A great car, but let down by really bad engineering choices by Ford. If you have an automatic and it breaks, the car is a write off.
Would you buy another car from this manufacturer? Don't Know
Review Date: 3rd July, 2013