2021 Audi S4 3.0

Price: £26,995. Fair price: £2,246 (7%) under the AskCar estimate of £29,241, our expected asking price for this car from its model, age, mileage and specification, drawing on 90 priced Audi S4 adverts on AskCar as of 7 November 2026.

AskCar lists 93 used Audi S4 from 82 UK dealerships, as of 7 November 2026.

Overview

  • Make: Audi
  • Model: S4
  • Version: 3.0 TDI Tiptronic 4WD Euro 6 4dr (336 bhp)
  • Year: 2021
  • Mileage: 36,000 miles
  • Fuel: Diesel
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 3.0 litres, 336 bhp
  • Gearbox: Automatic (Tiptronic)
  • Drive: Four-wheel drive
  • Colour: Grey
  • CO2: 186 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Audi S4 is 36,000 miles. Its asking price of £26,995 is £2,246 below the AskCar estimate of £29,241. To work out the AskCar estimate, we analyse UK dealer adverts for 90 Audi S4 cars across different ages and specifications. We first recorded this car for sale 131 days ago. Our records show an MOT expiry date of 16 October 2026, which has passed. Ask the dealer for an update. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Southern Automotive Solutions in Southampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,246 (7%) under the AskCar estimate of £29,241.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 90 priced Audi S4 adverts across different ages and specifications, as of 7 November 2026.

Time on sale

This 2021 Audi S4 has been on sale for at least 131 days.

Price history

AskCar first saw this advert on 29 June 2026 at £28,995. Its asking price is now £26,995, £2,000 less.

Price changes recorded:

  • 2 July 2026: £28,995
  • 30 July 2026: £27,995
  • 20 October 2026: £27,960
  • 30 October 2026: £26,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: the latest record we hold ran out on 16 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 17 October 2025, passed.

Advisories at the latest test: under trays fitted.

Mileage at that test: 31,391 miles, which matches the advertised 36,000 miles.

Browse all Audi S4 cars for sale · 2021 Audi S4 price guide

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Photos

77 photos of this car are on its AskCar page.

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.