2018 BMW X6 3.0 30d M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 30d M Sport Auto 4WD Euro 6 (s/s) 5dr (254 bhp)
• Year: 2018
• Mileage: 73,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 159 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X6 M Sport has covered 73,000 miles, around 9,900 more miles than is typical for its age. The dealer is asking £19,745, which is £651 below the AskCar estimate of £20,396. To work out the AskCar estimate, we analyse UK dealer adverts for 547 BMW X6 cars across different ages and specifications. It first appeared in our advert records 1 day ago. The seller is Fastlane Car Group, based in Redbridge. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £651 (3%) under the AskCar estimate of £20,396.

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 547 priced BMW X6 adverts across different ages and specifications, as of 4 November 2026.

A 2018 BMW X6 with the 3.0 diesel engine is typically advertised at £22,000: the median of the 54 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2018 BMW X6 advertised 1 day ago. About 3 in 10 of 2018 BMW X6 cars are gone from sale within a month of being advertised: 20 of the 60 first advertised between 14 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £19,745. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 9,900 miles higher than the median mileage of a 2018 BMW X6 on AskCar.

Similar cars

33 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 4 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: £19,995, £250 more than this car. Dealer: Hampton Car Sales in Northampton. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-11090ea037aa
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 69,735 miles. Price: £19,998, £253 more 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, £745 more than this car. Dealer: Motorlanka in Stourbridge. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-43a9bdb899c6

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, black, 9 miles from this car. Mileage: 85,000 miles. Price: £19,950, £205 more than this car. Dealer: Best4U Motors in Brentwood. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-91d61790272d