Hi,
It is important to also consider the recommended time interval for replacing the timing belt.
You can't say it enough.
For example, a timing belt that has run over 90,000 km in 3 years might still be more stable than one that has been used for 9 years and only 50,000 km! The material becomes 'brittle,' especially with prolonged periods of inactivity, such as those experienced by vehicles at used car dealerships.
Otherwise, such a question about running mileage is really difficult to answer.
VW would say: The lifespan of a car is 180,000 km.
