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: 66,190 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 165 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X6 M Sport is advertised with 66,190 miles, approximately 3,100 above the typical mileage for its age. Its asking price of £22,850 is £954 above the AskCar estimate of £21,896. To work out the AskCar estimate, we analyse UK dealer adverts for 536 BMW X6 cars across different ages and specifications. Since we first spotted the advert 35 days ago, the asking price has dropped by £145. Its advertised mileage matches the government's MOT record. The seller is ARJ Motors, based in Addlestone. 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: £954 (4%) over the AskCar estimate of £21,896.

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 35 days.

Price history

AskCar first saw this advert on 28 September 2026 at £22,995. Its asking price is now £22,850, £145 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 28 September 2026: £22,995
• 27 October 2026: £22,850

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 18 February 2027.

It failed its MOT on 2 February 2026 (offside rear tyre tread depth below requirements of 1.6mm) and passed later the same day.

Advisories at the latest test: nearside rear child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 56,633 miles, which matches the advertised 66,190 miles.

Advertised mileage is about 3,100 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: 63,124 miles. Price: £21,990, £860 less than this car. Dealer: Lloyd Colne BMW in Colne. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-1471cf71b0ff
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 62,735 miles. Price: £21,222, £1,628 less than this car. Dealer: Hitchfields in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-60eaed033b7c
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 69,735 miles. Price: £19,998, £2,852 less than this car. Dealer: Arnold Clark Kilmarnock Peugeot Jeep Leapmotor in Kilmarnock. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-ba120c74aeb9

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, white, 19 miles from this car. Mileage: 84,610 miles. Price: £19,850, £3,000 less than this car. Dealer: Parkside Motors in Edgware. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-331b3ac14e91