Rejecting a car for a full refund should be a last resort as it's s a time-consuming, stressful, expensive process - and the dealer is unlikely to want to do this so stay civil with them if you can. If they won't respond to you, or they do but still can't fix it, it'll make a stronger case in the long run if you do go via a legal route to get your money back.

Onto the rejection, if the dealer refuses to accept your rejection of the car, then consider contacting the Motor Ombudsman or the Financial Ombudsman. If you've already contacted Citizen's Advice and Trading Standards then, unfortunately, the final route is court - but it can be very costly and there's no guarantee you will win even with a solicitor. But if all else fails, that's the option you're left with.

You also have to bear in mind the car you bought is 17 years old, so it will also depend on whether you bought the car knowing that it had these advisories.