2021 Audi A6 prices
There are 4 used 2021 Audi A6 cars for sale from UK dealers on AskCar, as of 6 November 2026. The cheapest is £18,690.
Dealers lowered the asking price on more than one in five of 2021 Audi A6 cars: 1 of the 4 in the 14 days to 6 November 2026.
AskCar lists 74 used Audi A6 across the UK, from 60 dealerships.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
2021 Audi A6 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 and recently reduced. 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. 2 of the 3 cars listed here meet these rules. Page 2 lists every other 2021 Audi A6 car, cheapest first, including the one 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 61 priced Audi A6 adverts on AskCar as of 6 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Audi A6.
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 1 car whose advertised mileage is lower than the mileage recorded at its last MOT test.
Best value 2021 Audi A6: priced furthest below the AskCar estimate
These 2 are priced 2% to 13% under their AskCar estimate. Their asking prices run from £18,690 to £21,995.
- 2021 Audi A6 2.0 Black Edition, automatic, saloon, 4 doors, white. Mileage: 50,176 miles. Price: £18,690, reduced by £809 from £19,499 since AskCar first saw it on 16 August 2026, 82 days ago. Good value: £2,837 (13%) under the AskCar estimate of £21,527. Euro 6 emissions standard. MOT: valid until 10 March 2027. Dealer: P W Millar Ford in Barry. AskCar page: https://askcar.co.uk/car/audi-a6-2021-a8b9a6d28f5f
- 2021 Audi A6 2.0 S Line, automatic, saloon, 4 doors, blue. Mileage: 40,323 miles. Price: £21,995, reduced by £500 from £22,495 since AskCar first saw it on 28 May 2026, 162 days ago. Fair price: £633 (2%) under the AskCar estimate of £22,628. Euro 6 emissions standard. MOT: valid until 3 March 2027. Dealer: Roadside Motors Lurgan in Lurgan. AskCar page: https://askcar.co.uk/car/audi-a6-2021-487a1134b8e2
Cheapest 2021 Audi A6: the lowest asking prices
These 2 are priced £18,690 to £21,995. They have covered 40,323 to 50,176 miles.
- 2021 Audi A6 2.0 Black Edition: £18,690, 50,176 miles. Listed in full under best value.
- 2021 Audi A6 2.0 S Line: £21,995, 40,323 miles. Listed in full under best value.
Lowest-mileage 2021 Audi A6
These 2 have covered 40,323 to 50,176 miles. Their asking prices run from £18,690 to £21,995.
- 2021 Audi A6 2.0 S Line: £21,995, 40,323 miles. Listed in full under best value.
- 2021 Audi A6 2.0 Black Edition: £18,690, 50,176 miles. Listed in full under best value.
Recently reduced 2021 Audi A6: the biggest price reductions in the 14 days to 6 November 2026
The dealer lowered the asking price on this car in the 14 days to 6 November 2026.
- 2021 Audi A6 2.0 Black Edition: £18,690, 50,176 miles. Listed in full under best value.
Page 2: every other 2021 Audi A6 car, cheapest first
Audi A6 by trim
Audi A6 near you
- In England (57 cars)
- In Scotland (3 cars)
- In Wales (7 cars)
- In Northern Ireland (7 cars)
- Near Bracknell (7 cars)
- Near Manchester (6 cars)
- Near Bolton (6 cars)
- Near Reading (6 cars)
- Near Luton (6 cars)
- Near Bedford (6 cars)
- Near Farnborough (6 cars)
- Near Loughborough (6 cars)
- Near Leighton Buzzard (6 cars)
- Near Egham (6 cars)
- Near Hale (6 cars)
- Near Biggleswade (6 cars)
- Near Ashby-de-la-Zouch (6 cars)
- Near Coventry (5 cars)
- Near Hillingdon (5 cars)
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