2018 BMW 6 Series Gran Turismo 3.0 640i M Sport

Overview

• Make: BMW
• Model: 6 Series Gran Turismo
• Trim: M Sport
• Version: 3.0 640i M Sport Auto 4WD Euro 6 (s/s) 5dr GT (335 bhp)
• Year: 2018
• Mileage: 57,197 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 187 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 57,197 miles on the clock, this 2018 BMW 6 Series Gran Turismo M Sport has done roughly 17,800 fewer miles than a typical 2018 BMW 6 Series Gran Turismo. The dealer is asking £21,750, which is £28 above the AskCar estimate of £21,722. To work out the AskCar estimate, we analyse UK dealer adverts for 77 BMW 6 Series Gran Turismo cars across different ages and specifications. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. The seller is Sytner Select Northampton, based in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 11 November 2026.

How we estimate prices and check cars

Price

Fair price: £28 (under 1%) over the AskCar estimate of £21,722.

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 77 priced BMW 6 Series Gran Turismo adverts across different ages and specifications, as of 11 November 2026.

A 2018 BMW 6 Series Gran Turismo with the 3.0 petrol engine is typically advertised at £16,500: the median of the 25 for sale on AskCar, as of 11 November 2026.

Time on sale

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

Price history

AskCar first saw this advert on 11 November 2026 at £21,750. 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 11 November 2026: valid until 30 December 2026.

It has had 5 MOTs. The latest, on 31 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 49,063 miles, which matches the advertised 57,197 miles.

Advertised mileage is about 17,800 miles lower than the median mileage of a 2018 BMW 6 Series Gran Turismo on AskCar.

Similar cars

2 other 2018 BMW 6 Series Gran Turismo M Sport 3.0 petrol automatic hatchbacks are for sale at UK dealers, from £21,475 to £24,490, as of 11 November 2026.

The 2 closest to this car in mileage:

• 2018 BMW 6 Series Gran Turismo M Sport, 3.0 petrol hatchback, grey. Mileage: 49,029 miles. Price: £21,475, £275 less than this car. Dealer: PCBS Sales in Wolverhampton. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-turismo-2018-27e9297f8c17
• 2018 BMW 6 Series Gran Turismo M Sport, 3.0 petrol hatchback, grey. Mileage: 46,587 miles. Price: £24,490, £2,740 more than this car. Dealer: AS Cars (UK) in Dunstable. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-turismo-2018-322788d79ba1