See more from Ask Carzone 
Mileage to change an Audi A6's belt at?
What mileage do you have to change timing bet on Audi A6 sline
Our answer:
Hi Louis,
You've not told us the model year or engine so I'm going to assume it's a 2.0 TDI 177 from 2013. If so, then the maximum distance between changes is 210,000km, regardless of duration.
Have a motoring question? Ask us here!
Ask us anything motoring related and please provide as much information as possible so we can give you the most accurate advice.