The Office Of Fair Trading is responsible for setting out the rules applying to car warranties. At one time the major manufacturers had set servicing restrictions forcing consumers to have their cars serviced by the manufacturer to maintain their warranty.
"Widespread confusion among consumers about the terms attached to their warranties, with most believing they must have their car serviced at a franchised dealer for the warranty to remain valid, when this is not necessarily the case."
"All major makes of new car in the UK were to be sold without servicing ties as part of their warranties. The remaining manufacturers whose new car warranties included servicing ties lifted their servicing restrictions."