2021 BMW 8 Series 3.0 840i M Sport

Overview

• Make: BMW
• Model: 8 Series
• Trim: M Sport
• Version: 3.0 840i M Sport Steptronic RWD Euro 6 (s/s) 2dr (328 bhp)
• Year: 2021
• Mileage: 50,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 189 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 8 Series M Sport is advertised with 50,000 miles, approximately 6,300 above the typical mileage for its age. Its asking price of £32,925 is £1,707 above the AskCar estimate of £31,218. The AskCar estimate uses 186 UK dealer adverts for the BMW 8 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 72 days ago. Its asking price has since fallen by £2,024. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by A1 Ortos in Oldham. 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: £1,707 (5%) over the AskCar estimate of £31,218.

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 186 priced BMW 8 Series adverts across different ages and specifications, as of 5 November 2026.

A 2021 BMW 8 Series with the 3.0 petrol engine is typically advertised at £32,500: the median of the 23 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW 8 Series has been on sale for at least 72 days.

Price history

AskCar first saw this advert on 25 August 2026 at £34,949. Its asking price is now £32,925, £2,024 less. The latest price cut was seen on 9 October 2026.

Price changes recorded:

• 25 August 2026: £34,949
• 31 August 2026: £33,949
• 19 September 2026: £33,449
• 9 October 2026: £32,925

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 26 November 2026.

It failed its MOT on 6 November 2025 (nearside front tyre has a lump, caused by separation or partial failure of its structure outer sidewall) and passed 21 days later, on 27 November 2025.

Advisories at the latest test: offside front tyre worn close to legal limit/worn on edge worn on both edges; nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 44,154 miles, which matches the advertised 50,000 miles.

Advertised mileage is about 6,300 miles higher than the median mileage of a 2021 BMW 8 Series on AskCar.

Similar cars

10 other 2021 BMW 8 Series M Sport 3.0 petrol automatic coupes are for sale at UK dealers, from £23,695 to £35,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, grey. Mileage: 54,282 miles. Price: £34,000, £1,075 more than this car. Dealer: Sytner Warwick BMW in Warwick. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-83c3a57d450c
• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, black. Mileage: 45,575 miles. Price: £30,990, £1,935 less than this car. Dealer: Main Road Motor Company in Worcester. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-0d26fd4eb139
• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, blue. Mileage: 44,578 miles. Price: £31,000, £1,925 less than this car. Dealer: Sytner Coventry BMW in Coventry. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-b86cc63e4b98

• The nearest: 2021 BMW 8 Series M Sport, 3.0 petrol coupe, grey, 8 miles from this car. Mileage: 39,000 miles. Price: £30,990, £1,935 less than this car. Dealer: LTV in Manchester. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-e8c3ca17bf92