superbus

another problem is a late gear change. i feel it's stuck on 2nd gear while i'm driving 50(km/h). i switch manually in these cases.

I have a 3 year old citroen C3. i had alot of problems with it in the past, including battery change and oil leaks. some of the problems were fixed in the garage. there's one problem i can't trace nor understand. while driving i feel a sudden bump in the car and the motor slows down. there's a beep sound and snow and auto indicators start to blink. The engine does those harley davidson noise you were talking about. What was the problem in the old C3 (the one i have)?