2021 BMW 8 Series Gran Coupe 3.0 840i M Sport

Overview

• Make: BMW
• Model: 8 Series Gran Coupe
• Trim: M Sport
• Version: 3.0 840i M Sport Steptronic RWD Euro 6 (s/s) 4dr (328 bhp)
• Year: 2021
• Mileage: 50,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 195 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 50,000 miles on the clock, this 2021 BMW 8 Series Gran Coupe M Sport has done roughly 3,700 fewer miles than a typical 2021 BMW 8 Series Gran Coupe. Its asking price of £27,490 is £3,489 below the AskCar estimate of £30,979. To work out the AskCar estimate, we analyse UK dealer adverts for 120 BMW 8 Series Gran Coupe cars across different ages and specifications. This car was first seen in our listings data 2 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at S James Prestige in Stamford. 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

Good value: £3,489 (11%) under the AskCar estimate of £30,979.

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 120 priced BMW 8 Series Gran Coupe adverts across different ages and specifications, as of 7 November 2026.

A 2021 BMW 8 Series Gran Coupe with the 3.0 petrol engine is typically advertised at £29,100: the median of the 24 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2021 BMW 8 Series Gran Coupe advertised 2 days ago.

Price history

AskCar first saw this advert on 5 November 2026 at £27,490. 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 7 November 2026: valid until 22 January 2027.

It has had 4 MOTs. The latest, on 23 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,233 miles, which matches the advertised 50,000 miles.

Advertised mileage is about 3,700 miles lower than the median mileage of a 2021 BMW 8 Series Gran Coupe on AskCar.

Similar cars

10 other 2021 BMW 8 Series Gran Coupe M Sport 3.0 petrol automatic saloons are for sale at UK dealers, from £22,995 to £30,990, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol saloon, black. Mileage: 54,503 miles. Price: £27,990, £500 more than this car. Dealer: JCT600 Volkswagen Bradford in Bradford. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-44f15b5952ca
• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol saloon, black. Mileage: 55,000 miles. Price: £28,840, £1,350 more than this car. Dealer: Oakdene Collection in Alfreton. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-586b83305495
• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol saloon, black. Mileage: 39,915 miles. Price: £30,990, £3,500 more than this car. Dealer: Per4mance Cars in Macclesfield. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-f79b987024a8

• The nearest: 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol saloon, black, 13 miles from this car. Mileage: 65,891 miles. Price: £29,800, £2,310 more than this car. Dealer: Elton Cars in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-1fc2b4d1f225