Used Audi S4 for sale in Wales
There are 3 used Audi S4 for sale from UK dealers in Wales on AskCar, as of 7 November 2026. The cheapest is £6,500. AskCar lists 93 used Audi S4 across the UK, from 82 dealerships.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
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 90 priced Audi S4 adverts on AskCar as of 7 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.
- 2018 Audi S4 3.0 TFSI V6, 349 bhp, automatic, petrol, saloon, 4 doors, black. Mileage: 15,778 miles. Price: £23,995, unchanged since AskCar first saw it on 23 August 2026, 76 days ago. Fair price: £520 (2%) under the AskCar estimate of £24,515. Euro 6 emissions standard. ULEZ compliant. Dealer: Jones Motor Company in Chester. AskCar page: https://askcar.co.uk/car/audi-s4-2018-b15bc7b3bfd1
- 2017 Audi S4 3.0 TFSI V6, 349 bhp, automatic, petrol, saloon, 4 doors, red. Mileage: 64,434 miles. Price: £19,330, unchanged since AskCar first saw it on 8 October 2026, 30 days ago. Fair price: £382 (2%) over the AskCar estimate of £18,948. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 6 October 2027. Dealer: BUY & Go Cars in Cardiff. AskCar page: https://askcar.co.uk/car/audi-s4-2017-ebfe35d40941
- 2005 Audi S4 4.2, 339 bhp, manual, petrol, saloon, 4 doors, blue. Mileage: 130,000 miles. Price: £6,500, unchanged since AskCar first saw it on 5 November 2026, 2 days ago. Above the going rate: £1,164 (21%) over the AskCar estimate of £5,336. Euro 4 emissions standard. ULEZ compliant. MOT: valid until 30 September 2027. Dealer: Bargain Motors Cardiff in Cardiff. AskCar page: https://askcar.co.uk/car/audi-s4-2005-52d63d19f059
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