I have been having constant problems with my C4 1.4 Coupe (Brought June 2005). The anti-pollution filter light keeps going on and this does something to the acceleration that makes the car jumpy and unresponsive in 1st and 2nd. I has been in now three times but the problem keeps coming on. I have also had to replace the crusie control and various other things. Has this happened to ayone else and did you manage to get anywhere with Citroen UK and does anyone have any advice on how to deal with Citoren regarding replaement cars, compensation etc. Would appreciate any help. Thanks