Cambelt/chain replace

[FLIPKEY]

Hi All,

Looking at AUDI TDI 140 SE, how many miles before cambelt change??

This car has done 40k miles

first service was done at 19k miles and has not had a service since does this sound normal as the the car has driver information and sales rep cant use the on board computer thing to find out when the next service is due.

Thanks for any help.

Never had a Audi before so excuse my ignorance.