The "check engine" light went on so we went to have it checked out. The problem had to do with the catalytic converter - quite an expensive thing to get fixed. They suggested first, however, that we try a treatment to clear the converter out, rather than replacing it. It worked, and we didn't have to pay the £400+ to get the thing replaced. They charged £50 to analyse the problem, and pushed us to try the simpler (and much cheaper) solution first. Nice, honest mechanics! read more