Used Audi S5 convertible for sale under £20,000

There are 39 used Audi S5 convertible under £20,000 for sale from UK dealers on AskCar, as of 29 October 2026. Typical asking price £11,300 (the median: half cost less, half cost more). The cheapest is £5,991. AskCar lists 355 used Audi S5 across the UK, from 288 dealerships.

The middle half of the 39 cars are priced between £8,900 and £15,500.

As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

17 of the 39 cars had their price reduced in the last 14 days to 29 October 2026.

Cars for sale now

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 334 priced Audi S5 adverts on AskCar as of 29 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.

Audi S5 by gearbox, fuel and body

Audi S5 convertible by price

Audi S5 prices by year

Audi S5 by price

Convertible cars under £20,000

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