Used Audi S4 Avant for sale near Buckingham
There are 4 used Audi S4 Avant for sale from UK dealers within 20 miles of Buckingham on AskCar, as of 8 November 2026. The cheapest is £18,900. AskCar lists 129 used Audi S4 Avant across the UK, from 117 dealerships.
As of 8 November 2026, AskCar lists 595,762 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.
Price reductions near Buckingham
3 of the 4 Audi S4 Avant within 20 miles of Buckingham had their price reduced in the last 14 days to 8 November 2026. Each one's line in the list below says by how much.
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 128 priced Audi S4 Avant adverts on AskCar as of 8 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.
- 2018 Audi S4 Avant 3.0 TFSI V6, 349 bhp, automatic, petrol, estate, 5 doors, white. Mileage: 75,070 miles. Price: £18,900, reduced by £3,000 from £21,900 since AskCar first saw it on 23 August 2026, 77 days ago. Good value: £2,318 (10%) under the AskCar estimate of £21,218. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 13 April 2027. Dealer: Sytner Select Northampton in Northampton, 19 miles from Buckingham. AskCar page: https://askcar.co.uk/car/audi-s4-avant-2018-9f42d8a28f4d
- 2018 Audi S4 Avant 3.0 TFSI V6, 349 bhp, automatic, petrol, estate, 5 doors, white. Mileage: 71,119 miles. Price: £19,820, reduced by £560 from £20,380 since AskCar first saw it on 29 August 2026, 71 days ago. Good value: £1,988 (9%) under the AskCar estimate of £21,808. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 26 August 2027. Dealer: Evans Halshaw Ford Milton Keynes in Milton Keynes, 13 miles from Buckingham. AskCar page: https://askcar.co.uk/car/audi-s4-avant-2018-292e44e71fa4
- 2022 Audi S4 Avant 3.0 TDI V6, automatic, diesel, estate, 5 doors, grey. Mileage: 29,142 miles. Price: £33,900, reduced by £2,100 from £36,000 since AskCar first saw it on 7 July 2026, 124 days ago. Fair price: £79 (under 1%) over the AskCar estimate of £33,821. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 13 October 2026; ask the dealer for the current MOT. Dealer: Sytner Select Northampton in Northampton, 19 miles from Buckingham. AskCar page: https://askcar.co.uk/car/audi-s4-avant-2022-46191247ae9d
- 2020 Audi S4 Avant 3.0, automatic, diesel, estate, 5 doors, blue. Mileage: 52,000 miles. Price: £27,690, reduced by £4,305 from £31,995 since AskCar first saw it on 24 September 2026, 45 days ago. Fair price: £1,163 (4%) over the AskCar estimate of £26,527. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 5 June 2027. Dealer: Ideal Cars in Northampton, 19 miles from Buckingham. AskCar page: https://askcar.co.uk/car/audi-s4-avant-2020-95cd895bc797
Audi S4 Avant across the UK by price
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