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 sDrive M Sport Auto RWD Euro 6 4dr (333) (328 bhp)
• Year: 2021
• Mileage: 53,660 miles
• Fuel: Petrol
• Body: Coupe, 4 doors, 5 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 192 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 8 Series Gran Coupe M Sport is advertised with 53,660 miles on the clock. The AskCar estimate for this car is £31,261. It is priced at £28,056, which is £3,205 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 120 BMW 8 Series Gran Coupe cars across different ages and specifications. We first saw this car advertised 37 days ago. Its asking price has since fallen by £644. The seller is Marshall Motor Group Maidstone Audi, based in Maidstone. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Good value: £3,205 (10%) under the AskCar estimate of £31,261.

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 8 November 2026.

A 2021 BMW 8 Series Gran Coupe with the 3.0 petrol engine is typically advertised at £29,000: the median of the 25 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 BMW 8 Series Gran Coupe has been on sale for at least 37 days.

Price history

AskCar first saw this advert on 2 October 2026 at £28,700. Its asking price is now £28,056, £644 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 2 October 2026: £28,700
• 16 October 2026: £29,000
• 23 October 2026: £28,300
• 28 October 2026: £28,500
• 6 November 2026: £28,056

Mileage and MOT

Advertised mileage is about 100 miles higher than the median mileage of a 2021 BMW 8 Series Gran Coupe on AskCar.

Similar cars

8 other 2021 BMW 8 Series Gran Coupe M Sport 3.0 petrol automatic coupes are for sale at UK dealers, from £21,985 to £36,000, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, blue. Mileage: 50,194 miles. Price: £28,995, £939 more than this car. Dealer: Group 1 BMW Lincoln in Lincoln. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-e6d718ea21fd
• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, black. Mileage: 59,454 miles. Price: £29,250, £1,194 more than this car. Dealer: Sytner Stevenage BMW in Stevenage. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-ca30c7d004af
• 2021 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, grey. Mileage: 45,550 miles. Price: £29,990, £1,934 more than this car. Dealer: Parker Prestige in Richmond. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2021-1223e044d4ba