Used diesel Audi A6 Saloon for sale under £20,000

There are 492 used diesel Audi A6 Saloon under £20,000 for sale from UK dealers on AskCar, as of 9 November 2026. Typical asking price £12,000 (the median: half cost less, half cost more). The cheapest is £1,889. AskCar lists 891 used Audi A6 Saloon across the UK, from 649 dealerships.

The middle half of the 492 cars are priced between £8,500 and £16,000.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

146 of the 492 cars had their price reduced in the last 14 days to 9 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202122£17,900£16,800 to £18,600
202041£18,000£16,200 to £18,800
201993£16,000£14,500 to £17,700
201862£15,400£12,600 to £16,500
201757£10,500£8,800 to £12,500
201658£10,400£8,500 to £12,000
201557£9,300£8,000 to £11,000
201438£7,400£6,000 to £8,600
201324£5,900£5,000 to £7,100

Cars for sale now, page 1 of 5

Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 863 priced Audi A6 Saloon adverts on AskCar as of 9 November 2026.

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.

Cheaper cars like each one, with its price history, are on its AskCar page.

Audi A6 Saloon by gearbox, fuel and body

Diesel Audi A6 Saloon by price

Audi A6 Saloon prices by year

Audi A6 Saloon by price

Audi A6 Saloon near you

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