2021 Audi Q8 3.0 TDI V6 S Line

Overview

• Make: Audi
• Model: Q8
• Trim: S Line
• Version: 3.0 TDI V6 50 S Line Tiptronic 4WD Euro 6 (s/s) 5dr (282 bhp)
• Year: 2021
• Mileage: 23,300 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 178 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 23,300 miles, this 2021 Audi Q8 S Line has covered about 26,200 fewer miles than other 2021 Audi Q8 cars. Priced at £38,750, it is advertised £1,524 below the AskCar estimate of £40,274. The AskCar estimate uses 430 UK dealer adverts for the Audi Q8, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 10 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Castle Motors in Liskeard. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,524 (3%) under the AskCar estimate of £40,274.

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 430 priced Audi Q8 adverts across different ages and specifications, as of 5 November 2026.

A 2021 Audi Q8 with the 3.0 diesel engine is typically advertised at £36,000: the median of the 46 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Audi Q8 has been on sale for at least 10 days.

Price history

AskCar first saw this advert on 26 October 2026 at £38,750. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 28 September 2027.

It has had 3 MOTs. The latest, on 29 September 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear nail in tyre.

Mileage at that test: 21,882 miles, which matches the advertised 23,300 miles.

Advertised mileage is about 26,200 miles lower than the median mileage of a 2021 Audi Q8 on AskCar.

Similar cars

12 other 2021 Audi Q8 S Line 3.0 diesel automatic SUVs are for sale at UK dealers, from £30,990 to £36,040, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi Q8 S Line, 3.0 diesel SUV, blue. Mileage: 37,172 miles. Price: £35,145, £3,605 less than this car. Dealer: Vindis Group Cambridge Audi in Cambridge. AskCar page: https://askcar.co.uk/car/audi-q8-2021-ad6746032632
• 2021 Audi Q8 S Line, 3.0 diesel SUV, silver. Mileage: 38,358 miles. Price: £32,190, £6,560 less than this car. Dealer: Evans Halshaw BYD Bury in Bury. AskCar page: https://askcar.co.uk/car/audi-q8-2021-c77d9a42bc60
• 2021 Audi Q8 S Line, 3.0 diesel SUV, grey. Mileage: 44,992 miles. Price: £35,000, £3,750 less than this car. Dealer: Sytner Group Wakefield Audi in Wakefield. AskCar page: https://askcar.co.uk/car/audi-q8-2021-bc7b6ad0451a

• The nearest: 2021 Audi Q8 S Line, 3.0 diesel SUV, silver, 174 miles from this car. Mileage: 48,507 miles. Price: £33,990, £4,760 less than this car. Dealer: Stratstone Halesowen Audi in Halesowen. AskCar page: https://askcar.co.uk/car/audi-q8-2021-5be8bf9a0fce