I will have owned my GTI 4 years in July. When i bought it from VW i got them to change the cambelt and water pump as part of the asking price as under the 4 years / 40k miles recommendation it needed doing due to age (not mileage she only had around 25k on the clock).
Since then I think i've put less than 12k miles on the clock
which is nowhere near the 'prescribed' change of 40k miles but obviously the 4 years will have elapsed.
So do i need to change it or not? Does a cambelt rot with age or use?