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: 23,889 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 189 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 8 Series M Sport is advertised with 23,889 miles, approximately 19,900 below the typical mileage for its age. Its asking price of £32,950 is £2,560 below the AskCar estimate of £35,510. The AskCar estimate draws on 183 BMW 8 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 43 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by JKC BMW in Coleraine. 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

Fair price: £2,560 (7%) under the AskCar estimate of £35,510.

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

Time on sale

This 2021 BMW 8 Series has been on sale for at least 43 days.

Price history

AskCar first saw this advert on 25 September 2026 at £32,950. 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 15 May 2027.

It has had one MOT, on 16 May 2025, and passed.

There were no advisories at the latest test.

Mileage at that test: 18,914 miles, which matches the advertised 23,889 miles.

Advertised mileage is about 19,900 miles lower than the median mileage of a 2021 BMW 8 Series on AskCar.

Similar cars

11 other 2021 BMW 8 Series M Sport 3.0 petrol automatic coupes are for sale at UK dealers, from £23,695 to £35,790, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, black. Mileage: 27,628 miles. Price: £35,790, £2,840 more than this car. Dealer: Group 1 Ipswich BMW in Ipswich. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-1c33754b2b50
• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, blue. Mileage: 36,205 miles. Price: £32,495, £455 less than this car. Dealer: Park's Motor Group Douglas Park BMW Hamilton in Hamilton. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-5402aa1c7e82
• 2021 BMW 8 Series M Sport, 3.0 petrol coupe, blue. Mileage: 37,990 miles. Price: £32,460, £490 less than this car. Dealer: Dace Specialist Car Centre Manchester - Trading Standards Approved in Manchester. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-2d0092a2bb6d