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: 69,000 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 69,000 miles, around 8,000 more miles than is typical for its age. Priced at £2,000, this car is advertised £15,898 below the AskCar estimate of £17,898. This is a large price difference, so check the price and vehicle details with the dealer. To work out the AskCar estimate, we analyse UK dealer adverts for 110 BMW 6 Series Gran Coupe cars across different ages and specifications. This car was first seen in our listings data today. The government's MOT record matches its advertised mileage. You can find this car at Car Quay in Derby. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Far below the going rate: £15,898 (88%) under the AskCar estimate of £17,898. Worth asking the dealer why.

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 110 priced BMW 6 Series Gran Coupe adverts across different ages and specifications, as of 9 November 2026.

A 2018 BMW 6 Series Gran Coupe with the 3.0 diesel engine is typically advertised at £17,900: the median of the 20 for sale on AskCar, as of 9 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 9 November 2026 at £2,000. 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 9 November 2026: valid until 8 September 2027.

It failed its MOT on 25 August 2026 (front brake pad(s) worn down to wear indicator both; brake performance unable to be tested; offside front headlamp aim too high; and 1 more) and passed 15 days later, on 9 September 2026.

There were no advisories at the latest test.

Mileage at that test: 68,494 miles, which matches the advertised 69,000 miles.

Advertised mileage is about 8,000 miles higher than the median mileage of a 2018 BMW 6 Series Gran Coupe on AskCar.

Similar cars

19 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 9 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, blue. Mileage: 69,100 miles. Price: £13,995, £11,995 more than this car. Dealer: HF Cars in Barnet. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-fb241ad511c9
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, multicolour. Mileage: 67,211 miles. Price: £17,500, £15,500 more than this car. Dealer: Scottish Motor Services in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-coupe-2018-7d90bf994f88
• 2018 BMW 6 Series Gran Coupe M Sport, 3.0 diesel saloon, black. Mileage: 62,612 miles. Price: £17,299, £15,299 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