Used petrol Audi A3 for sale under £20,000

There are 2,721 used petrol Audi A3 under £20,000 for sale from UK dealers on AskCar, as of 30 October 2026. Typical asking price £15,000 (the median: half cost less, half cost more). The cheapest is £795. AskCar lists 6,654 used Audi A3 across the UK, from 2,240 dealerships.

The middle half of the 2,721 cars are priced between £10,500 and £17,900.

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

1,065 of the 2,721 cars had their price reduced in the last 14 days to 30 October 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
2024114£18,800£17,600 to £19,500
2023605£18,300£17,000 to £19,300
2022345£17,100£15,800 to £18,500
2021250£16,700£14,900 to £18,000
2020209£15,000£13,400 to £16,500
2019204£13,100£11,400 to £14,800
2018231£12,200£10,500 to £13,700
2017189£10,500£9,000 to £12,500
2016157£9,200£8,000 to £10,800
2015105£8,500£7,400 to £10,000
2014114£8,000£7,000 to £9,000
201385£7,000£5,800 to £8,500

Cars for sale now, page 6 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 6,475 priced Audi A3 adverts on AskCar as of 30 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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