Used diesel Audi A4 for sale under £20,000

There are 532 used diesel Audi A4 under £20,000 for sale from UK dealers on AskCar, as of 6 November 2026. Typical asking price £10,000 (the median: half cost less, half cost more). The cheapest is £895. AskCar lists 1,490 used Audi A4 across the UK, from 974 dealerships.

The middle half of the 532 cars are priced between £6,500 and £14,000.

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.

143 of the 532 cars had their price reduced in the last 14 days to 6 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202139£16,700£15,200 to £18,000
202045£16,800£14,300 to £18,000
201957£13,800£12,000 to £15,500
201833£12,500£11,000 to £13,500
201760£10,300£9,000 to £12,100
201699£9,700£7,800 to £11,000
201548£7,400£6,000 to £10,000
201446£6,500£5,400 to £7,400
201337£6,000£5,300 to £7,000

Cars for sale now, page 1 of 6

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 1,435 priced Audi A4 adverts on AskCar as of 6 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 A4 by gearbox, fuel and body

Diesel Audi A4 by price

Audi A4 prices by year

Audi A4 by price

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