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: 81,093 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 81,093 miles, around 20,400 more miles than is typical for its age. The dealer is asking £16,999, which is £600 above the AskCar estimate of £16,399. 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 first recorded this car for sale 13 days ago. Its advertised mileage matches the government's MOT record. You can find this car at Brookway Cars in Prenton. 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: £600 (3%) over the AskCar estimate of £16,399.

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 6 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 6 November 2026.

Time on sale

This 2018 BMW 6 Series Gran Coupe has been on sale for at least 13 days.

Price history

AskCar first saw this advert on 24 October 2026 at £16,999. 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 21 October 2027.

It has had 9 MOTs. The latest, on 22 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 81,099 miles, which matches the advertised 81,093 miles.

Advertised mileage is about 20,400 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 6 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, silver. Mileage: 82,568 miles. Price: £16,995, the same price as 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, black. Mileage: 76,237 miles. Price: £17,090, £91 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
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, grey. Mileage: 86,000 miles. Price: £15,495, £1,504 less than this car. Dealer: Auto 2000 in Havering. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-dc81ac4fccaa

• The nearest: 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, black, 25 miles from this car. Mileage: 62,612 miles. Price: £17,299, £300 more than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-80609cdd7393