To the original poster.... Obviously you purchased the car using a credit card for the deposit, did you take out a finance agreement as well? The problem I can foresee with anything other than a Section 75 is that you have allowed Citroen far too many attempts to rectify the fault before rejecting the car. This will limit your options... The good thing with a valid Section 75 claim is that it is for the seller to prove the goods were fit for purpose. Since you have left it too long then now the burden of proof is on you for most other courses of action. If the car was purchased on finance then in some circumstances it can be returned when 50% of the total amount due has been paid, some will tell you it will affect your credit score of you do this but that is a fallacy propagated by dealers and finance companies to dissuade people going this route. Do you have Legal Expenses cover with your motor insurance or family legal protection with your home insurance? This could prove invaluable as a good solicitor isn’t going to be cheap! I have successfully returned two cars, one was replaced with a new model after six months, the second was finally returned to the finance company after 18 months but all I got was effectively a better than trade price for the vehicle. I suggest that you take the time to write a detailed chronology of events, since this will be needed anyway, but also take the time out to think what you want. It’s unrealistic to expect a full refund at this point, since you have had the benefit of the car for over a year when taking into account it being off the road for 4+ months.