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Used Audi A6 Fault Guides

Used Car Expert Fault Guides tell you the common Audi A6 faults and wear items that can become problems and big bills for their owner.

Independent research indicated that using our fault guides to check a car before you buy it can save you an average of £300 in surprise bills and hidden problems.

That's because our Audi A6 fault guides are written so that anyone can understand them – even if you know nothing about cars and have no tools. For every common fault, we tell you what to look for, what it means and what it costs.

Select your Audi A6 fault guide:

Audi A6 (1997 - 2004) Fault Guide
Audi A6 (2004 - 2011) Fault Guide


Audi A6 (1997 - 2004) Fault Guide

View Audi A6 (1997 - 2004) Fault Guide

We know of 16 AUDI A6 (1997 - 2004) faults which our fault check guide makes it easy for you to spot and avoid.

  • 3 engine faults
  • 1 suspension wear items or faults
  • 4 interior problems
  • 1 bodywork issues
  • 7 recalls

Here's an example fault on the AUDI A6 (1997 - 2004)

What to look for:

Check the paperwork to see if the cam belt has been changed on schedule. On most engines the cam belt must be changed within 60,000 miles. Although Audi no longer issue official cam belt intervals, some garages recommend changing diesel belts as early as 40,000 miles.

What it means:

If the cam belt and associated parts (such as water pump and tensioner) have not been changed, and the mileage is over these boundaries, the cam belt is likely to fail soon. Usually the engine has to be replaced or at least re-built after a cam belt failure.

What to do

Ensure that the cam belt is changed before the car is driven anywhere if it is coming close to its interval. Changing the belt will cost £250.


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Audi A6 (2004 - 2011) Fault Guide

View Audi A6 (2004 - 2011) Fault Guide

We know of 12 AUDI A6 (2004 - 2011) faults which our fault check guide makes it easy for you to spot and avoid.

  • 7 engine faults
  • 1 suspension wear items or faults
  • 2 interior problems
  • 1 bodywork issues
  • 1 recalls

Here's an example fault on the AUDI A6 (2004 - 2011)

What to look for:

Rev the engine in neutral and listen/feel for any excessive vibration from the engine (which will be felt through the car).

What it means:

There is probably a problem with ‘Dual Mass’ flywheel. This is a very expensive repair.

What to do

If the car is under warranty (within three years of purchase) then Audi will fix it. Negotiate a £1200 - £2,000 discount or have the repair completed.


Register to have full access to the AUDI A6 (2004 - 2011) fault guide.

Registered users also get access to our regional price guides, cars for sale email alerts, and many other benefits to help you buy a safe, reliable used car at a great price.


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