The diesel engines offer the lowest running costs, particularly the 1.9 TDI. However Audi servicing is expensive so it's worth searching out a good independent specialist - there are plenty about.
The A6 scores fairly badly on the eco front. With an average of 214g/km CO2 across the model line-up, its emissions are a touch high for an executive saloon. However, it's worth noting that the line up has a high number of diesel models, bringing the average down and giving buyers more choices of low-emission versions. Diesels typically produce less CO2 than petrol engines with similar power outputs.
The range is not particularly economical, averaging 35mpg.
Reliability in the A6 tends to be exemplary, with only occasional problems reported by owners since it was launched in 1997. Maintaining a full Audi service history will help this.
Estimated fuel cost per year
|Fuel type||Pence per litre||Estimated cost per year *|
|Unleaded||128p||£1,763 - £3,063 *|
|Diesel||131p||£1,191 - £1,921 *|
* 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)|
|1.9 TDI (130ps) Diesel||g/km (Min)||N/A|
|4.2 Petrol||350 g/km (Max)||£325|
Ongoing running costs
|Road tax (12 months)||
£160 - £325
See tax rates for all versions
26 - 46
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.