vinkodex.
Known fault

TDI: the vanes of the variable geometry (VNT) turbo stick

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

expensive

severity

not available

mileage

2

sources

2 sources next to the write-up.

The fault

How you spot it

The vanes of the variable geometry turbo are glued together by soot and oil arriving through the EGR. First you get overboost or a lack of boost, then loss of power above 2,000 rpm, and finally limp mode. Caught in time it is enough to remove the turbo, clean it and fit a new actuator rod. Short urban trips and gentle, low rev driving speed up the deposits.

Which model

Who it affects

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

Engines and transmissions

Checklist

TDI: the vanes of the variable geometry (VNT) turbo stick

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