Used Audi S4 for sale near Watford
There are 11 used Audi S4 for sale from UK dealers within 20 miles of Watford on AskCar, as of 9 November 2026. Typical asking price £14,000 (the median: half cost less, half cost more). The cheapest is £6,990. AskCar lists 93 used Audi S4 across the UK, from 82 dealerships.
The middle half of the 11 cars are priced between £12,000 and £15,900.
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 Watford
2 of the 11 Audi S4 within 20 miles of Watford had their price reduced in the last 14 days to 9 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 91 priced Audi S4 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.
- 2013 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, white. Mileage: 68,900 miles. Price: £11,490, reduced by £2,500 from £13,990 since AskCar first saw it on 12 September 2026, 58 days ago. Good value: £1,019 (8%) under the AskCar estimate of £12,509. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 4 August 2027. Dealer: Lectus Cars in Broxbourne, 18 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2013-0ebf06ff18a6
- 2015 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, white. Mileage: 63,500 miles. Price: £14,995, reduced by £500 from £15,495 since AskCar first saw it on 10 June 2026, 152 days ago. Fair price: £977 (6%) under the AskCar estimate of £15,972. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 9 June 2027. Dealer: Revised Car Company in Hoddesdon, 18 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2015-813172ee2305
- 2017 Audi S4 3.0 TFSI V6, 349 bhp, automatic, petrol, saloon, 4 doors, red. Mileage: 38,000 miles. Price: £20,989, unchanged since AskCar first saw it on 31 October 2026, 9 days ago. Fair price: £929 (4%) under the AskCar estimate of £21,918. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 11 November 2026. Dealer: Bluehawk Automotive in Hounslow, 12 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2017-f5606f0f5f1e
- 2015 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, grey. Mileage: 88,606 miles. Price: £12,995, unchanged since AskCar first saw it on 6 August 2026, 95 days ago. Fair price: £412 (3%) under the AskCar estimate of £13,407. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 14 March 2027. Dealer: MK Motors in London, 18 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2015-2b8a3cc28d38
- 2017 Audi S4 3.0 TFSI V6, 349 bhp, automatic, petrol, saloon, 4 doors, blue. Mileage: 79,148 miles. Price: £16,795, unchanged since AskCar first saw it on 2 October 2026, 38 days ago. Fair price: £299 (1%) under the AskCar estimate of £17,094. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 12 March 2027. Dealer: Tenby Car Supermarket in Luton, 19 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2017-d50e79dcaf20
- 2010 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, white. Mileage: 145,453 miles. Price: £6,990, reduced by £1,000 from £7,990 since AskCar first saw it on 28 May 2026, 165 days ago. Fair price: £338 (5%) over the AskCar estimate of £6,652. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 23 April 2027. Dealer: HMC in Chesham, 10 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2010-e531f916be2c
- 2011 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, black. Mileage: 57,393 miles. Price: £12,585, reduced by £1,010 from £13,595 since AskCar first saw it on 9 September 2026, 61 days ago. Fair price: £618 (5%) over the AskCar estimate of £11,967. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 13 May 2027. Dealer: FY Autos in Maidenhead, 15 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2011-8b928c75db76
- 2012 Audi S4 3.0 TFSI V6 Black Edition, 328 bhp, automatic, petrol, saloon, 4 doors. Mileage: 55,707 miles. Price: £13,995, unchanged since AskCar first saw it on 9 September 2026, 61 days ago. Above the going rate: £1,115 (8%) over the AskCar estimate of £12,880. Euro 5 emissions standard. ULEZ compliant. Dealer: James Ashgrove Prestige in High Wycombe, 16 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2012-a155f7413bf9
- 2009 Audi S4 3.0 TFSI V6, 328 bhp, petrol, white. Mileage: 86,027 miles. Price: £8,995, unchanged since AskCar first saw it on 14 August 2026, 87 days ago. Above the going rate: £754 (9%) over the AskCar estimate of £8,241. Euro 5 emissions standard. ULEZ compliant. MOT: valid until 12 February 2027. Dealer: Motornova in Windsor, 15 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2009-d2ca043f2022
- 2012 Audi S4 3.0 TFSI V6, 328 bhp, automatic, petrol, saloon, 4 doors, black. Mileage: 55,707 miles. Price: £13,995, unchanged since AskCar first saw it on 25 September 2026, 45 days ago. Above the going rate: £1,327 (10%) over the AskCar estimate of £12,668. Dealer: Jap Cars in High Wycombe, 16 miles from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2012-70e12fc44dad
- 2017 Audi S4 3.0 TFSI V6, 349 bhp, automatic, petrol, saloon, 4 doors, white. Mileage: 76,500 miles. Price: £19,449, reduced by £500 from £19,949 since AskCar first saw it on 15 June 2026, 147 days ago. Above the going rate: £2,036 (11%) over the AskCar estimate of £17,413. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 29 July 2026; ask the dealer for the current MOT. Dealer: Paragon Cars London in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/audi-s4-2017-b4690efc1fe9
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