The lowest fuel bills come courtesy of the 2.0-litre TDI Ultra diesel engine, which returns up to a claimed 64.2mpg in some specifications.
Even moving up to a six-cylinder 3.0-litre V6 diesel doesn’t incur a huge penalty, as economy doesn’t suffer too badly and CO2 emissions are low enough to keep tax bills down.
Insurance grouping range from 26 to 50 (the latter being for the RS 6 Avant) so ensure you get a quote before committing to buy a car as there could be a sting in the tail there.
Audi’s servicing costs are on the high side, but you can alleviate this somewhat by choosing a fixed-price package when you buy the car.
Watch out for ordering larger wheels too, if costs are a consideration. Tyres won’t be cheap if you’re running 20-inch alloys…
On launch you’ll have chosen the 2.0-litre diesel as it kicked out 129g/km of CO2, which wasn't too shabby for a large estate car. Following the 2014 refresh the Ultra A6 Avants are the ones to pick for lowest CO2 emissions, since 109g/km is possible in some configurations.
We’ve heard of no reason to be concerned about the A6 Avant’s reliability. Many of its mechanical parts are tired-and-tested in other Audi products, and there haven’t been any major recalls to be concerned about.
The build quality of the cabin is very good indeed – everything feels very well screwed together.
Estimated fuel cost per year
|Fuel type||Pence per litre||Estimated cost per year *|
|Unleaded||128p||£1,188 - £2,007 *|
|Diesel||131p||£931 - £1,353 *|
* The estimated fuel cost figure is based on an annual mileage of 10,000 miles and is a guide to how much this model will cost in fuel each year. It's calculated using the model's average MPG (calculated from both town centre and motorway driving) and the average fuel price from around the country. Actual fuel costs will vary based on driving style and road conditions.
Highest and lowest CO2 emissions
|Engine||CO2 emissions||Road tax (12 months)|
|2.0 Tdi Diesel||114 g/km (Min)||£30|
|4.0 TFSI (450ps) Petrol||224 g/km (Max)||£325 - £465|
Ongoing running costs
|Road tax (12 months)||
£30 - £465
See tax rates for all versions
26 - 47
How much is it to insure?
Vehicle excise duty (VED) varies according to the CO2 emissions and the fuel type of the vehicle. For cars registered before 01 March 2001 it is based on engine size. For cars registered on or after 01 March 2001 the VED or road tax is based on the car's CO2 emissions.