2021 Audi A8 prices

There are 10 used 2021 Audi A8 cars for sale from UK dealers on AskCar, as of 6 November 2026. Typical asking price £27,000 (the median: half cost less, half cost more). The cheapest is £19,495. The middle half are priced between £25,000 and £28,000. Median mileage: about 55,000 miles.

Dealers lowered the asking price on more than a third of 2021 Audi A8 cars: 5 of the 10 in the 14 days to 6 November 2026.

AskCar lists 227 used Audi A8 across the UK, from 196 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 A8 cars for sale now

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. All 9 cars listed here meet these rules.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 214 priced Audi A8 adverts on AskCar as of 6 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Audi A8.

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 A8: priced furthest below the AskCar estimate

Their asking prices run from £19,495 to £28,948.

Cheapest 2021 Audi A8: the lowest asking prices

These 9 are priced £19,495 to £28,948. They have covered 24,000 to 122,000 miles.

Lowest-mileage 2021 Audi A8

These 9 have covered 24,000 to 122,000 miles. Their asking prices run from £19,495 to £28,948.

Recently reduced 2021 Audi A8: the biggest price reductions in the 14 days to 6 November 2026

The dealer lowered the asking price on each of these 5 in the 14 days to 6 November 2026. Their reductions since AskCar first saw them run from £554 to £3,190.

Audi A8 by gearbox, fuel and body

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