Faults:

Some rattling in front suspension, I didn't figure out its source.

General Comments:

Coming from a MKII Ford Focus, I reckon that my C4 is far from a sporty driving experience, although surprisingly reliable; the steering is so unconnected from the road that you have to get used to it and drive cautiously.

I should add that the C4 is frugal for its size, and you can easily find cheap spare parts.