hi, i have the same problem with my c2 1.1 design. had it to the dealer 4 times now only to be told "computer says no!" they just say there are no registered faults and it was ok on the test drive. they tried an ECU download which did very little other than it seems my average mpg has dropped from 49 to 44. i finally got fed up of it and took it back to have the rattling windows repaired, the trim fixed back up in the passenger footwell and radio checked as its always losing it settings and after a long conversation with someone who actually seemed to care about fixing it they have ordered a cylinder valve. the bloke on the desk couldnt realy be bothered to sit and explain what the problem was with it so i cant be of much help there. overall i find the car better than average, cheap to run, but certain aspects really should be improved and from what i have read on various websites the citroen service network need to improve their customer service standards. BTW does anyone else think the exhaust is a bit noisy on these? almost sounds like its blowing, it has been the same from new. sounds like a banger when it pulls off. :unsure: