When do I need to change the cam belt on my Audi A6 Avant?

I recently purchased an Audi A6 and wanted to know when the cam belt needs to be changed? I presume it has one. Online forums suggest a different mileage change for business and private users. With the complexity of this type of car is it best to change after 3-5 years of use?
Sould be based on the number of starts, not the mileage, but 3-5 years makes sense.
Answered by Honest John on

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