2021 BMW 8 Series 3.0 840d MHT M Sport

Price: £31,980. Fair price: £780 (2%) under the AskCar estimate of £32,760, our expected asking price for this car from its model, age, mileage and specification, drawing on 186 priced BMW 8 Series adverts on AskCar as of 5 November 2026.

AskCar lists 193 used BMW 8 Series from 162 UK dealerships, as of 5 November 2026.

Overview

  • Make: BMW
  • Model: 8 Series
  • Trim: M Sport
  • Version: 3.0 840d MHT M Sport Steptronic 4WD Euro 6 (s/s) 2dr (335 bhp)
  • Year: 2021
  • Mileage: 48,992 miles
  • Fuel: Diesel, mild hybrid
  • Body: Coupe, 2 doors, 4 seats
  • Engine: 3.0 litres, 335 bhp
  • Gearbox: Automatic (Steptronic)
  • Drive: Four-wheel drive
  • Colour: Black
  • CO2: 169 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 48,992 miles, this 2021 BMW 8 Series M Sport has covered about 5,300 more miles than other 2021 BMW 8 Series cars. The dealer is asking £31,980, which is £780 below the AskCar estimate of £32,760. To work out the AskCar estimate, we analyse UK dealer adverts for 186 BMW 8 Series cars across different ages and specifications. Since we first spotted the advert 56 days ago, the asking price has dropped by £2,500. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Oakdene Collection in Alfreton. 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: £780 (2%) under the AskCar estimate of £32,760.

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 diesel 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 56 days.

Price history

AskCar first saw this advert on 10 September 2026 at £34,480. Its asking price is now £31,980, £2,500 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

  • 10 September 2026: £34,480
  • 19 September 2026: £34,280
  • 25 September 2026: £33,980
  • 3 October 2026: £33,780
  • 9 October 2026: £32,940
  • 16 October 2026: £32,880
  • 20 October 2026: £32,280
  • 22 October 2026: £31,980
  • 28 October 2026: £31,780
  • 30 October 2026: £31,980

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 29 July 2027.

It has had 4 MOTs. The latest, on 28 July 2026, passed.

Advisories at the latest test: central rear prop shaft flexible coupling slightly deteriorated splitting.

Mileage at that test: 48,366 miles, which matches the advertised 48,992 miles.

Advertised mileage is about 5,300 miles higher than the median mileage of a 2021 BMW 8 Series on AskCar.

Similar cars

1 other 2021 BMW 8 Series M Sport 3.0 diesel automatic coupe is for sale at UK dealers, as of 5 November 2026.

The closest to this car in mileage:

  • 2021 BMW 8 Series M Sport, 3.0 diesel coupe, black. Mileage: 55,000 miles. Price: £31,950, the same price as this car. Dealer: Magee Automotive in Lisburn. AskCar page: https://askcar.co.uk/car/bmw-8-series-2021-d0d41c73e83d

Browse all BMW 8 Series cars for sale · 2021 BMW 8 Series price guide

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Photos

48 photos of this car are on its AskCar page.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.