See more from Ask Carzone 
When to change a Peugeot 508's belt?
Peugeot 508 2012 124k km when should timing belt be changed
Our answer:
Hi Pierce,
We're going to assume it has the popular 1.6-litre diesel engine. Strictly speaking, the exact interval depends on when exactly the engine was built, but if you stick to an interval of 180,000km or ten years than you should be fine.
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.