See more from Ask Carzone 
Max distance on S40 timing belt?
What is the maxkilometers on a volvo s40 timing belt
Our answer:
Hi Patsy,
It's not a case of maximum distance you'll get away with, but adhering to the recommended replacement interval. Also, it will vary depending on which engine and what year your car is. By way of example, the belt on the 2011 1.6-litre diesel model must be changed every 140,000km or 10 years.
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.