Used diesel Audi A4 Avant for sale under £20,000

There are 458 used diesel Audi A4 Avant under £20,000 for sale from UK dealers on AskCar, as of 11 November 2026. Typical asking price £11,300 (the median: half cost less, half cost more). The cheapest is £695. AskCar lists 1,258 used Audi A4 Avant across the UK, from 849 dealerships.

The middle half of the 458 cars are priced between £7,800 and £15,000.

As of 11 November 2026, AskCar lists 593,449 cars and vans from 12,847 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

117 of the 458 cars had their price reduced in the last 14 days to 11 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202323£16,000£14,100 to £17,000
202144£16,800£14,800 to £18,600
202036£16,600£14,700 to £18,400
201958£15,000£12,600 to £16,900
201764£10,000£8,600 to £11,900
201676£9,600£8,400 to £13,000
201543£7,300£6,200 to £8,300
201425£7,000£6,000 to £9,800

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 1,229 priced Audi A4 Avant adverts on AskCar as of 11 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 Avant by gearbox, fuel and body

Diesel Audi A4 Avant by price

Audi A4 Avant prices by year

Audi A4 Avant by price

Audi A4 Avant near you

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