2020 BMW 8 Series 3.0 840i

Overview

• Make: BMW
• Model: 8 Series
• Version: 3.0 840i Steptronic RWD Euro 6 (s/s) 2dr (335 bhp)
• Year: 2020
• Mileage: 98,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2020 BMW 8 Series is 98,000 miles. Priced at £20,990, it is advertised £130 above the AskCar estimate of £20,860. The AskCar estimate draws on 185 BMW 8 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 85 days ago, and its asking price has since fallen by £4,000. The last MOT shows 99,433 miles, more than the advert. This is worth checking with the dealer. Its recorded MOT is valid until 31 August 2027. You can find this car at Gems Motors in Canterbury. 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: £130 (under 1%) over the AskCar estimate of £20,860.

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

This 2020 BMW 8 Series has been on sale for at least 85 days.

Price history

AskCar first saw this advert on 13 August 2026 at £24,990. Its asking price is now £20,990, £4,000 less. The latest price cut was seen on 12 October 2026.

Price changes recorded:

• 13 August 2026: £24,990
• 13 September 2026: £22,990
• 26 September 2026: £21,990
• 12 October 2026: £20,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 31 August 2027.

It has had 6 MOTs. The latest, on 1 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 99,433 miles. The advert says 98,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 57,500 miles higher than the median mileage of a 2020 BMW 8 Series on AskCar.