Hi I need some advice. My car is making a nasty rattle when I turn the engine on. Audi have said that its' the cam chain and tensioner. Cost to fit and replace a whopping £800. My car has only done 38000 miles. Should this have /ubbthreads/images/graemlins/burningmad.gif happended with such low miles. I think it's a manufacturing fault. Could this be the case. Your advice would be much appreciated. My car is a 2001 X TT /ubbthreads/images/graemlins/burningmad.gif