I took advantage of a "Free MOT" with National Tyres and Auto Centres linked with an AA membership offer. A little sceptical as to how they financed this, but having taken my car to the main dealers for pads all round and front discs, National failed it on the MOT 4 weeks later for pitted and corroded rear discs.

A trip back to the main dealer and the MOT was granted - the rear discs they say should be good for another year or more and the pads are (obviously) fine. A "Free MOT" becomes very expensive if unscrupulous garages insist on unnecessary repairs. Is there a history of this sort of behaviour by National and other "players"?