if something does fail just out of warranty you still have grounds for repair or replacement under the Consumer Goods Act...
It is deemed that an item of value... should last for a fair period of time... SO eg.. a £500 TV should last for more than 12 months....
A £50 toaster should work for more than 12 months etc
If its a new car just outside warranty.. the law would state that a fair priced car should run without problems for longer than the stated warranty...