2021 Audi A8 3.0 S Line

Overview

• Make: Audi
• Model: A8
• Trim: S Line
• Version: 3.0 TDI S Line Tiptronic 4WD Euro 6 4dr (281 bhp)
• Year: 2021
• Mileage: 24,000 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 281 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 188 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 24,000 miles, this 2021 Audi A8 S Line has covered about 32,800 fewer miles than other 2021 Audi A8 cars. Its asking price of £29,393 is £2,651 below the AskCar estimate of £32,044. The AskCar estimate uses UK dealer asking prices, including 214 Audi A8 adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 34 days ago, and its asking price has since fallen by £1,605. Its advertised mileage matches the government's MOT record. It is for sale at Lookers Audi Teesside in Stockton-on-Tees. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £2,651 (8%) under the AskCar estimate of £32,044.

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 214 priced Audi A8 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A8 with the 3.0 diesel engine is typically advertised at £26,700: the median of the 11 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A8 has been on sale for at least 34 days.

Price history

AskCar first saw this advert on 29 September 2026 at £30,998. Its asking price is now £29,393, £1,605 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 29 September 2026: £30,998
• 30 September 2026: £30,238
• 6 October 2026: £29,878
• 16 October 2026: £29,998
• 21 October 2026: £29,498
• 27 October 2026: £29,235
• 31 October 2026: £29,393

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 19 August 2027.

It has had 3 MOTs. The latest, on 27 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 23,248 miles, which matches the advertised 24,000 miles.

Advertised mileage is about 32,800 miles lower than the median mileage of a 2021 Audi A8 on AskCar.

Similar cars

3 other 2021 Audi A8 S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £19,495 to £27,499, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A8 S Line, 3.0 diesel saloon, black. Mileage: 50,400 miles. Price: £27,499, £1,894 less than this car. Dealer: Approved Cars & Finance Approved Cars in East Peckham. AskCar page: https://askcar.co.uk/car/audi-a8-2021-868b376f313e
• 2021 Audi A8 S Line, 3.0 diesel saloon, black. Mileage: 60,000 miles. Price: £24,995, £4,398 less than this car. Dealer: Motoring World London Motoring World in Hillingdon. AskCar page: https://askcar.co.uk/car/audi-a8-2021-7212e1dc57b0
• 2021 Audi A8 S Line, 3.0 diesel saloon, black. Mileage: 122,000 miles. Price: £19,495, £9,898 less than this car. Dealer: Motor Trade Centre in Barking and Dagenham. AskCar page: https://askcar.co.uk/car/audi-a8-2021-c101914ea161