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Known fault

4.2 V8 TDI: timing gear and chain

It does not show up on every car. Check before you buy.

critical

severity

not available

mileage

2

sources

2 sources next to the write-up.

The fault

How you spot it

The valvetrain of the 4.2 V8 TDI works with gears and a chain, and this is the best known weak point of the engine: the gear drive wears out and the chain stretches. The repair is as deep as on the V6, only more expensive.

This engine is rare, and that is exactly what makes it dangerous: there is little experience, few workshops, and the parts are expensive. Whoever buys a V8 TDI Touareg has to plan for this risk alongside the purchase price.

Which model

Who it affects

The card opens the generation, the engine or the transmission.

Generations and models

2 generations.

Checklist

4.2 V8 TDI: timing gear and chain

What you would check for this fault. Take it to the car.

Before you buy

Checklist

What you tick stays on this device only.

vinkodex.com · Before you buy it, see what can go wrong.

Sources

How we know

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms