About a week ago I bought a used car (2007 Honda CR-V) from a local car dealer. Yesterday the engine management light came on and having the car inspected at a local garage it appears there is a problem with the car's engine (intake manifold system fault).

I understand that the Consumer Rights Act, as of Oct 2015, gives a right to reject the vehicle within 30 days of purchase for a full refund if it is not fit for purpose or it is not as described or if it is not of satisfactory quality. I feel my case fall within this scope.

The trader wants to repair the car but I want to return it for a full refund because I am sensing that the fault is indicative of more problems down in the line and I do not want to end up being stuck with a bad vehicle.

I wanted to get your opinion about how strong my case is and how best to proceed. In particular I am afraid that, assuming this goes to court, the judge might say that this is a used car and they are expected to develop problems like this and I should have accepted the dealer's offer of repairing the car.