Used Audi A6 2004 - 2011 reliability review

A used A6 gives you a lot of car for the money, yet it's good to drive, reliable and needn't cost a fortune to run.

More used reviews:

What should I look for in a used Audi A6 Saloon?

The Audi A6 has a good reputation for reliability, yet there are some problems that have cropped up.

The air-con is surprisingly susceptible to faults, with roughly a quarter of cars needing attention. Check that it blows icy-cold air and that there are no damp or musty smells.

The diesel engines can get through oil between services, so it's vital to check them regularly. Inspect the oil level and see when the car was last serviced.

Gremlins in the electrical system strike in almost 40% of cars. The engine's ECU can also cause problems, so look for warning lights on the dashboard or a sudden drop in performance.

Some whatcar.com users have also complained about the rear wheels rubbing on wheelarches when the car is loaded, although this appears to effect S line cars only. Tyres can be expensive to replace, too.

Used cars available now

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Audi A6 Saloon 2.0 TDI SE 4dr

Audi A6 Saloon

2.0 TDI SE 4dr

£1,199

Audi A6 Saloon 2.0 TDI SE CVT 4dr

Audi A6 Saloon

2.0 TDI SE CVT 4dr

£1,695

Audi A6 Saloon 2.0 TDI S line Special Edition Euro 5 4dr

Audi A6 Saloon

2.0 TDI S line Special Edition Euro 5 4dr

£1,990

Audi A6 Saloon 2.0 TDI SE 4dr

Audi A6 Saloon

2.0 TDI SE 4dr

£1,990

Audi A6 Saloon 3.0 TDI Le Mans quattro 4dr

Audi A6 Saloon

3.0 TDI Le Mans quattro 4dr

£1,995

Audi A6 Saloon 3.2 FSI SE quattro 4dr

Audi A6 Saloon

3.2 FSI SE quattro 4dr

£1,995

Audi A6 Saloon 2.7 TDI Le Mans 4dr

Audi A6 Saloon

2.7 TDI Le Mans 4dr

£1,995

Audi A6 Saloon 2.0 TDIe S line Euro 5 4dr

Audi A6 Saloon

2.0 TDIe S line Euro 5 4dr

£2,000

Audi A6 Saloon 2.0 TDI S line CVT 4dr

Audi A6 Saloon

2.0 TDI S line CVT 4dr

£2,000

About the writer

Stuart Milne, digital editor

Name: Stuart Milne

Title: Digital editor

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Stuart has been a motoring journalist for more than 25 years, writing and editing for a wide range of consumer titles. Today, Stuart is responsible for the smooth running of whatcar.com and all of its related social and digital channels. And he’s the man responsible for making sure you're able to find What Car?’s industry-leading content whenever you search for it.

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