2018 BMW X6 3.0 30d M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 xDrive30d M Sport Auto 4WD Euro 6 5dr Step (254 bhp)
• Year: 2018
• Mileage: 69,735 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 183 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X6 M Sport is advertised with 69,735 miles, approximately 6,600 above the typical mileage for its age. The dealer is asking £19,998, which is £1,747 below the AskCar estimate of £21,745. To work out the AskCar estimate, we analyse UK dealer adverts for 536 BMW X6 cars across different ages and specifications. We first recorded this advert 100 days ago, and its asking price has since fallen by £1,500. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Kilmarnock Peugeot Jeep Leapmotor, based in Kilmarnock. 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

Good value: £1,747 (8%) under the AskCar estimate of £21,745.

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 100 days.

Price history

AskCar first saw this advert on 25 July 2026 at £21,498. Its asking price is now £19,998, £1,500 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 25 July 2026: £21,498
• 29 October 2026: £19,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 22 July 2027.

It has had 7 MOTs. The latest, on 23 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 69,741 miles, which matches the advertised 69,735 miles.

Advertised mileage is about 6,600 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, grey. Mileage: 72,567 miles. Price: £20,495, £497 more than this car. Dealer: Hampton Car Sales in Milton Malsor. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-11090ea037aa
• 2018 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 66,190 miles. Price: £22,850, £2,852 more than this car. Dealer: ARJ Motors in Addlestone. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-10dd6d8ecc6c
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 63,124 miles. Price: £21,990, £1,992 more than this car. Dealer: Lloyd Colne BMW in Colne. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-1471cf71b0ff

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, black, 16 miles from this car. Mileage: 51,807 miles. Price: £21,990, £1,992 more than this car. Dealer: East Kilbride Used Car Centre in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-27876e8c967d