2018 BMW 6 Series Gran Turismo 3.0 630d M Sport

Overview

• Make: BMW
• Model: 6 Series Gran Turismo
• Trim: M Sport
• Version: 3.0 630d M Sport Auto RWD Euro 6 (s/s) 5dr GT (261 bhp)
• Year: 2018
• Mileage: 49,012 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 3.0 litres, 261 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 139 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 6 Series Gran Turismo M Sport has covered 49,012 miles, around 26,000 fewer miles than is typical for its age. Priced at £17,600, it is advertised £2,514 below the AskCar estimate of £20,114. The AskCar estimate uses UK dealer asking prices, including 76 BMW 6 Series Gran Turismo adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 43 days ago. Its asking price has since fallen by £1,500. The government's MOT record matches its advertised mileage. It is advertised by Car Planet Watford in Rickmansworth. 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

Good value: £2,514 (12%) under the AskCar estimate of £20,114.

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

A 2018 BMW 6 Series Gran Turismo with the 3.0 diesel engine is typically advertised at £16,500: the median of the 25 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2018 BMW 6 Series Gran Turismo has been on sale for at least 43 days.

Price history

AskCar first saw this advert on 27 September 2026 at £19,100. Its asking price is now £17,600, £1,500 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 27 September 2026: £19,100
• 12 October 2026: £18,800
• 19 October 2026: £18,500
• 26 October 2026: £18,200
• 1 November 2026: £17,900
• 7 November 2026: £17,600

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 6 February 2027.

It has had 8 MOTs. The latest, on 26 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 41,917 miles, which matches the advertised 49,012 miles.

Advertised mileage is about 26,000 miles lower than the median mileage of a 2018 BMW 6 Series Gran Turismo on AskCar.

Similar cars

19 other 2018 BMW 6 Series Gran Turismo M Sport 3.0 diesel automatic hatchbacks are for sale at UK dealers, from £11,845 to £19,994, as of 9 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 6 Series Gran Turismo M Sport, 3.0 diesel hatchback, black. Mileage: 53,091 miles. Price: £18,995, £1,395 more than this car. Dealer: Tenby Car Supermarket in Luton. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-turismo-2018-dae2fa9c2337
• 2018 BMW 6 Series Gran Turismo M Sport, 3.0 diesel hatchback, grey. Mileage: 56,204 miles. Price: £19,175, £1,575 more than this car. Dealer: David Hayton Autostore Penrith in Penrith. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-turismo-2018-c0e4656adc5f
• 2018 BMW 6 Series Gran Turismo M Sport, 3.0 diesel hatchback, grey. Mileage: 60,673 miles. Price: £19,994, £2,394 more than this car. Dealer: Group 1 Reading BMW in Reading. AskCar page: https://askcar.co.uk/car/bmw-6-series-gran-turismo-2018-aa4982f43acb