I own a May 2010 Audi A5 which I have maintained and serviced since new. About 83K miles on clock. Just had a call from Audi who said i needed a new cam belt now and when I questioned them they said at 140K miles, but when I said only 83K they then said oh but it is 5 years old therefore needs a new cam belt. I have booked the car in for a so called free health check, but as I have only done 83K miles do i wait until it is 140K miles or does 5 years mean cam belt 'old'. I intend seeking a second opinion but as i will be doing about 30k over next 12 months and likely another 20 to 30k the year after before I change cars I need to be sure I have minimised my risk but only done what I can afford to do.