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Audi A6 Avant (2005-2011) running costs and reliability

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Running costs rating: 3 out of 53.0

Written by David Ross Published: 6 June 2019

Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

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Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 23 - 53 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

View mpg & specs for any version

Used values are weaker than those of the BMW 5-Series, but Audi often offers new customers cut-price upgrades, such as switching from SE to S Line at a reduced rate and so on, which helps ensure well equipped cars are on the used market. Diesel models, especially the 2.0 TDI cars, are exceptionally frugal so worth looking out for.

When the A6 was facelifted in October 2008, Audi launched a new ‘e’ model. Powered by a 2.0 TDI engine it uses gearbox modifications, aerodynamic tweaks and a lower ride height to lower emissions and boost economy. As a result it emits 139g/km of CO2 – low for a car of this size, while returning a healthy 53mpg. It’s still good to drove though with plenty of in-gear pace.

The last model was generally very good in terms of its reliability and standards haven’t slipped for this model.