Cambelt replacement interval

[RDE]

Could anyone tell me what the replacement interval is for a 1.8 Mk2 cambelt? I've been told that the only stipulation is mileage rather than any time constraint, but i'm not sure I believe that. In case it makes any difference, the car i'm looking at is an import.

Many thanks in advance.

[RDE]

Thanks for that. That schedule from Mazda doesn't mention years at all for the cambelt, just the mileage. Did this change at some point?