2018 BMW 8 Series 3.0 840d

Overview

• Make: BMW
• Model: 8 Series
• Version: 3.0 840d Steptronic 4WD Euro 6 (s/s) 2dr (316 bhp)
• Year: 2018
• Mileage: 40,000 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 3.0 litres, 316 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 40,000 miles, this 2018 BMW 8 Series has covered about 19,000 fewer miles than other 2018 BMW 8 Series cars. Its asking price of £28,490 is £2,435 below the AskCar estimate of £30,925. The AskCar estimate uses 186 UK dealer adverts for the BMW 8 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 161 days ago, the asking price has dropped by £1,100. We checked its advertised mileage against the government's MOT record, and they match. The seller is S James Prestige, based in Stamford. 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: £2,435 (7%) under the AskCar estimate of £30,925.

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 2018 BMW 8 Series with the 3.0 diesel engine is typically advertised at £27,000: the median of the 17 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW 8 Series has been on sale for at least 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £29,590. Its asking price is now £28,490, £1,100 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 29 May 2026: £29,590
• 19 June 2026: £28,990
• 5 November 2026: £28,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 13 November 2026.

It has had 7 MOTs. The latest, on 4 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 38,828 miles, which matches the advertised 40,000 miles.

Advertised mileage is about 19,000 miles lower than the median mileage of a 2018 BMW 8 Series on AskCar.