2018 BMW X6 3.0 40d M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 40d M Sport Auto 4WD Euro 6 (s/s) 5dr (309 bhp)
• Year: 2018
• Mileage: 72,567 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 165 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 72,567 miles, this 2018 BMW X6 M Sport has covered about 9,400 more miles than other 2018 BMW X6 cars. The dealer is asking £20,495, which is £517 below the AskCar estimate of £21,012. To work out the AskCar estimate, we analyse UK dealer adverts for 536 BMW X6 cars across different ages and specifications. We first saw this car advertised 81 days ago. Its asking price has since fallen by £1,500. Our records show an MOT expiry date of 19 July 2026, which has passed. Ask the dealer for an update. The government's MOT record matches its advertised mileage. It is advertised by Hampton Car Sales in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £517 (2%) under the AskCar estimate of £21,012.

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 536 priced BMW X6 adverts across different ages and specifications, as of 2 November 2026.

A 2018 BMW X6 with the 3.0 diesel engine is typically advertised at £22,000: the median of the 52 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 BMW X6 has been on sale for at least 81 days.

Price history

AskCar first saw this advert on 13 August 2026 at £21,995. Its asking price is now £20,495, £1,500 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 13 August 2026: £21,995
• 18 September 2026: £20,995
• 20 October 2026: £20,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 19 July 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 8 July 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 59,021 miles, which matches the advertised 72,567 miles.

Advertised mileage is about 9,400 miles higher than the median mileage of a 2018 BMW X6 on AskCar.

Similar cars

31 other 2018 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £13,995 to £29,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 69,735 miles. Price: £19,998, £497 less than this car. Dealer: Arnold Clark Kilmarnock Peugeot Jeep Leapmotor in Kilmarnock. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-ba120c74aeb9
• 2018 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 76,400 miles. Price: £20,490, the same price as this car. Dealer: Motorlanka in Stourbridge. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-43a9bdb899c6
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 76,900 miles. Price: £21,389, £894 more than this car. Dealer: A6 Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-c174b72c4856