The four-cylinder 2.0 TDI and 2.0 BiTDI run on a timing belt, not a chain. Replacement of the belt is due at around 120 000 kilometres.
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If the belt snaps, the damage is severe: the piston reaches the open valve, and then the valves, the pistons and the cylinder head all have to be repaired. The replacement is therefore not an item that can be left out.
The work itself is complex: a specialist workshop takes between eight and twenty hours over it, and because of the precise alignment it is not a job for home. The tensioner and the auxiliary belt have to be replaced along with the belt.
One thing is worth asking about, because many people mistake the part here. On this engine there is also a chain-driven unit: the drive of the oil pump and the balance shaft. Its wear is worth inspecting or replacing within the work that goes with the belt change, because afterwards it would need opening up separately. So look for that on the invoice for the belt change as well.
What to check
- Ask for the invoice of the timing belt change: the date and the mileage at the time are needed too
- Check whether the tensioner and the auxiliary belt were replaced as well: the belt alone is not enough
- Ask whether the chain drive of the oil pump and the balance shaft was inspected at the same time