2021 Audi A6 Saloon prices

There are 80 used 2021 Audi A6 Saloon cars for sale from UK dealers on AskCar, as of 7 November 2026. Typical asking price £18,600 (the median: half cost less, half cost more). The cheapest is £12,200. The middle half are priced between £16,900 and £21,000. Median mileage: about 55,000 miles.

Dealers lowered the asking price on more than a third of 2021 Audi A6 Saloon cars: 32 of the 80 in the 14 days to 7 November 2026.

2021 Audi A6 Saloon prices by engine and mileage

A 2021 Audi A6 Saloon 2.0 diesel car with 40,000 to 60,000 miles typically costs £20,000, against £17,000 with 60,000 miles or more.

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
2.0 diesel£18,700Too few for saleToo few for sale£20,000£17,000

Only 1 of the 2021 Audi A6 Saloon cars for sale have the 3.0 diesel engine, too few to give a typical asking price.

2021 Audi A6 Saloon prices by trim

TrimTypical asking price, 2021 cars
Sport£17,000
Black Edition£22,000
S Line£18,200

Typical asking prices are of 2021 Audi A6 Saloon cars for sale on 7 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 Audi A6 Saloon against other years

A 2020 Audi A6 Saloon car has a typical asking price of £18,000 and a 2022 one £21,000, as of 7 November 2026.

AskCar lists 903 used Audi A6 Saloon across the UK, from 663 dealerships.

As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 Audi A6 Saloon cars for sale now, page 1 of 2

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 75 of the 78 cars listed here meet these rules. Page 2 lists every other 2021 Audi A6 Saloon car, cheapest first, including the 3 the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 872 priced Audi A6 Saloon adverts on AskCar as of 7 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Audi A6 Saloon.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

This list leaves out 2 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2021 Audi A6 Saloon: priced furthest below the AskCar estimate

These 10 are priced 6% to 13% under their AskCar estimate. Their asking prices run from £16,400 to £25,510.

Cheapest 2021 Audi A6 Saloon: the lowest asking prices

These 10 are priced £12,200 to £15,795. They have covered 58,077 to 144,000 miles.

Lowest-mileage 2021 Audi A6 Saloon

These 10 have covered 16,206 to 32,479 miles. Their asking prices run from £17,000 to £25,510.

Recently reduced 2021 Audi A6 Saloon: the biggest price reductions in the 14 days to 7 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 7 November 2026. Their reductions since AskCar first saw them run from £1,000 to £3,700.

Newly advertised 2021 Audi A6 Saloon: first seen by AskCar in the 7 days to 7 November 2026

These 3 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Audi A6 Saloon by gearbox, fuel and body

Audi A6 Saloon prices by year

Audi A6 Saloon by trim

2021 Audi A6 Saloon by trim

Audi A6 Saloon by price

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