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: 35,000 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 6 Series Gran Coupe M Sport has covered 35,000 miles, around 25,700 fewer miles than is typical for its age. The dealer is asking £22,995, which is £856 above the AskCar estimate of £22,139. To work out the AskCar estimate, we analyse UK dealer adverts for 112 BMW 6 Series Gran Coupe cars across different ages and specifications. We have tracked this advert for 33 days. It is advertised by Southern Prestige Cars in Crawley. 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: £856 (3%) over the AskCar estimate of £22,139.

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 5 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 5 November 2026.

Time on sale

This 2018 BMW 6 Series Gran Coupe has been on sale for at least 33 days.

Price history

AskCar first saw this advert on 3 October 2026 at £22,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 25,700 miles lower 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 £14,500 to £27,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, black. Mileage: 35,150 miles. Price: £22,995, the same price as this car. Dealer: Southern Prestige Cars in Crawley. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-c005f880c8db
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, black. Mileage: 50,003 miles. Price: £19,995, £3,000 less than this car. Dealer: Essex Cars in Colchester. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-596c8203ef7c
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, blue. Mileage: 53,125 miles. Price: £18,989, £4,006 less than this car. Dealer: A6 Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-94fb4edc3bb1

• The nearest: 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, under a mile from this car. Mileage: 8,000 miles. Price: £27,995, £5,000 more than this car. Dealer: Southern Prestige Cars in Crawley. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-248c9834199e