Used petrol Audi A3 for sale under £20,000

There are 2,755 used petrol Audi A3 under £20,000 for sale from UK dealers on AskCar, as of 31 October 2026. Typical asking price £15,000 (the median: half cost less, half cost more). The cheapest is £795. AskCar lists 6,729 used Audi A3 across the UK, from 2,260 dealerships.

The middle half of the 2,755 cars are priced between £10,500 and £17,900.

As of 31 October 2026, AskCar lists 583,548 cars and vans from 12,716 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

1,082 of the 2,755 cars had their price reduced in the last 14 days to 31 October 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
2024113£18,800£17,700 to £19,600
2023614£18,300£17,000 to £19,300
2022348£17,000£15,800 to £18,500
2021252£16,600£15,000 to £18,000
2020211£15,200£13,300 to £16,500
2019211£13,300£11,400 to £14,900
2018234£12,000£10,500 to £13,700
2017196£10,500£9,000 to £12,500
2016156£9,200£8,000 to £10,800
2015105£8,500£7,400 to £10,000
2014117£8,000£6,900 to £9,000
201382£7,000£5,600 to £8,400

Cars for sale now, page 12 of 28

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 6,600 priced Audi A3 adverts on AskCar as of 31 October 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.

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