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: 86,833 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 6 Series Gran Coupe M Sport has covered 86,833 miles, around 26,100 more miles than is typical for its age. The AskCar estimate for this car is £15,705. It is priced at £16,250, which is £545 above that estimate. The AskCar estimate draws on 112 BMW 6 Series Gran Coupe adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 48 days ago. Its asking price has since fallen by £250. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Walters Motor Group - Loddon in Norwich. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £545 (3%) over the AskCar estimate of £15,705.

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 112 priced BMW 6 Series Gran Coupe adverts across different ages and specifications, as of 7 November 2026.

A 2018 BMW 6 Series Gran Coupe with the 3.0 diesel engine is typically advertised at £18,000: the median of the 19 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2018 BMW 6 Series Gran Coupe has been on sale for at least 48 days.

Price history

AskCar first saw this advert on 20 September 2026 at £16,500. Its asking price is now £16,250, £250 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 20 September 2026: £16,500
• 7 November 2026: £16,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 20 December 2026.

It has had 7 MOTs. The latest, on 27 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 75,160 miles, which matches the advertised 86,833 miles.

Advertised mileage is about 26,100 miles higher than the median mileage of a 2018 BMW 6 Series Gran Coupe on AskCar.

Similar cars

18 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 7 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, grey. Mileage: 86,000 miles. Price: £15,495, £755 less 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, £745 more than this car. Dealer: Lion Car Hub in Farnham. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-fda04483b99a
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, blue. Mileage: 81,093 miles. Price: £16,999, £749 more than this car. Dealer: Brookway Cars in Prenton. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-cd5eff11c2c0

• The nearest: 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, black, 38 miles from this car. Mileage: 76,237 miles. Price: £17,090, £840 more than this car. Dealer: Stratstone BMW Bury St Edmunds in Bury St Edmunds. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-7c43cf8d15cf