2020 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: 2020
• Mileage: 51,903 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 51,903 miles on the clock, this 2020 BMW 8 Series M Sport has done roughly 11,400 more miles than a typical 2020 BMW 8 Series. Its asking price of £31,499 is £1,967 above the AskCar estimate of £29,532. To work out the AskCar estimate, we analyse UK dealer adverts for 185 BMW 8 Series cars across different ages and specifications. We have tracked this advert for 1 day. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Lookers BMW Stafford, based in Stafford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,967 (6%) over the AskCar estimate of £29,532.

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 185 priced BMW 8 Series adverts across different ages and specifications, as of 6 November 2026.

A 2020 BMW 8 Series with the 3.0 petrol engine is typically advertised at £29,200: the median of the 37 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2020 BMW 8 Series advertised 1 day ago.

Price history

AskCar first saw this advert on 5 November 2026 at £31,499. 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 6 November 2026: valid until 25 September 2027.

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

There were no advisories at the latest test.

Mileage at that test: 51,391 miles, which matches the advertised 51,903 miles.

Advertised mileage is about 11,400 miles higher than the median mileage of a 2020 BMW 8 Series on AskCar.

Similar cars

3 other 2020 BMW 8 Series M Sport 3.0 petrol automatic convertibles are for sale at UK dealers, from £30,995 to £35,994, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 8 Series M Sport, 3.0 petrol convertible, black. Mileage: 56,298 miles. Price: £30,995, £504 less than this car. Dealer: Berry Croydon BMW in Croydon. AskCar page: https://askcar.co.uk/car/bmw-8-series-2020-4044e75a4a6f
• 2020 BMW 8 Series M Sport, 3.0 petrol convertible, black. Mileage: 33,395 miles. Price: £34,450, £2,951 more than this car. Dealer: MINI UK at Group 1 Lincoln in Lincoln. AskCar page: https://askcar.co.uk/car/bmw-8-series-2020-4d48d8426cca
• 2020 BMW 8 Series M Sport, 3.0 petrol convertible, black. Mileage: 22,377 miles. Price: £35,994, £4,495 more than this car. Dealer: Group 1 Reading BMW in Reading. AskCar page: https://askcar.co.uk/car/bmw-8-series-2020-5647ef374ae2