Used diesel Audi A3 for sale under £20,000

There are 1,040 used diesel Audi A3 under £20,000 for sale from UK dealers on AskCar, as of 8 November 2026. Typical asking price £8,400 (the median: half cost less, half cost more). The cheapest is £995. AskCar lists 6,811 used Audi A3 across the UK, from 2,296 dealerships.

The middle half of the 1,040 cars are priced between £6,000 and £11,900.

As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

282 of the 1,040 cars had their price reduced in the last 14 days to 8 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202338£18,800£18,100 to £19,500
202240£17,600£16,300 to £19,200
202132£15,900£14,000 to £17,500
202044£15,400£13,900 to £17,100
201972£13,000£11,000 to £14,300
201877£10,500£9,000 to £12,500
2017124£9,000£7,700 to £10,500
2016165£8,000£6,500 to £9,500
2015155£7,000£6,000 to £9,100
2014114£7,000£5,500 to £8,300
201370£5,300£4,000 to £6,500
201235£3,500£3,000 to £4,600

Cars for sale now, page 1 of 11

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 6,620 priced Audi A3 adverts on AskCar as of 8 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 A3 by gearbox, fuel and body

Diesel Audi A3 by price

Audi A3 prices by year

Audi A3 by price

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