Used Audi A3 for sale under £20,000 near Cardiff

There are 105 used Audi A3 under £20,000 for sale from UK dealers within 20 miles of Cardiff on AskCar, as of 9 November 2026. Typical asking price £14,000 (the median: half cost less, half cost more). The cheapest is £2,995. AskCar lists 6,708 used Audi A3 across the UK, from 2,266 dealerships.

The middle half of the 105 cars are priced between £10,600 and £17,000.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

Price reductions near Cardiff

44 of the 105 Audi A3 within 20 miles of Cardiff had their price reduced in the last 14 days to 9 November 2026. Of those priced between £1,000 and £60,000, these 8 have the biggest reductions in pounds since AskCar first saw them.

Cars for sale now, page 1 of 2

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 6,554 priced Audi A3 adverts on AskCar as of 9 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, town and distance; AskCar page.

Cheaper cars like each one, with its price history, are on its AskCar page.

Audi A3 near Cardiff by price

Audi A3 across the UK by price

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