2018 BMW 6 Series Gran Coupe 3.0 640d M Sport

Overview

• Make: BMW
• Model: 6 Series Gran Coupe
• Trim: M Sport
• Version: 3.0 640d M Sport Auto RWD Euro 6 (s/s) 4dr (309 bhp)
• Year: 2018
• Mileage: 97,254 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 6 Series Gran Coupe M Sport has covered 97,254 miles, around 36,100 more miles than is typical for its age. Priced at £14,495, it is advertised £4 above the AskCar estimate of £14,491. To work out the AskCar estimate, we analyse UK dealer adverts for 111 BMW 6 Series Gran Coupe cars across different ages and specifications. We have tracked this advert today. The government's MOT record matches its advertised mileage. It is for sale at RS Commercials & Cars in Washington. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £4 (under 1%) over the AskCar estimate of £14,491.

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 111 priced BMW 6 Series Gran Coupe adverts across different ages and specifications, as of 10 November 2026.

A 2018 BMW 6 Series Gran Coupe with the 3.0 diesel engine is typically advertised at £17,700: the median of the 21 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2018 BMW 6 Series Gran Coupe advertised today.

Price history

AskCar first saw this advert on 10 November 2026 at £14,495. 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 10 November 2026: valid until 21 March 2027.

It failed its MOT on 12 March 2026 (nearside rear road wheel fractured) and passed 7 days later, on 19 March 2026.

There were no advisories at the latest test.

Mileage at that test: 93,750 miles, which matches the advertised 97,254 miles.

Advertised mileage is about 36,100 miles higher than the median mileage of a 2018 BMW 6 Series Gran Coupe on AskCar.

Similar cars

20 other 2018 BMW 6 Series Gran Coupe M Sport 3.0 diesel automatic saloons are for sale at UK dealers, from £13,995 to £27,995, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, blue. Mileage: 86,833 miles. Price: £16,250, £1,755 more than this car. Dealer: Walters Motor Group - Loddon in Norwich. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-46e30dd0f3a9
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, grey. Mileage: 86,000 miles. Price: £15,495, £1,000 more than this car. Dealer: Auto 2000 in Havering. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-dc81ac4fccaa
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, silver. Mileage: 82,568 miles. Price: £16,995, £2,500 more than this car. Dealer: Lion Car Hub in Farnham. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-fda04483b99a

• The nearest: 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, blue, 123 miles from this car. Mileage: 81,093 miles. Price: £16,999, £2,504 more than this car. Dealer: Brookway Cars in Prenton. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-cd5eff11c2c0