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: 129,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 183 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 129,000 miles on the clock, this 2018 BMW X6 M Sport has done roughly 65,900 more miles than a typical 2018 BMW X6. Its asking price of £14,799 is £244 below the AskCar estimate of £15,043. 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 83 days ago, the asking price has dropped by £100. Its advertised mileage matches the government's MOT record. It is for sale at Southern Automotive Solutions in Southampton. 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: £244 (1%) under the AskCar estimate of £15,043.

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 83 days.

Price history

AskCar first saw this advert on 11 August 2026 at £14,899. Its asking price is now £14,799, £100 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 11 August 2026: £14,899
• 21 October 2026: £14,799

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 1 April 2027.

It failed its MOT on 10 March 2026 (nearside rear upper suspension arm ball joint excessively worn; offside front suspension arm ball joint excessively worn; windscreen damaged but not adversely affecting driver's view) and passed 1 day later, on 11 March 2026.

Advisories at the latest test: front brake disc worn, but not excessively; windscreen damaged but not adversely affecting driver's view.

Mileage at that test: 123,606 miles, which matches the advertised 129,000 miles.

Advertised mileage is about 65,900 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: 128,000 miles. Price: £15,748, £949 more than this car. Dealer: UP Prestige in Bridgnorth. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-a09314e1c6f5
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 120,000 miles. Price: £13,995, £804 less than this car. Dealer: See Cars Nottingham in Little Eaton. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-a8a5bdb6721f
• 2018 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 92,700 miles. Price: £19,995, £5,196 more than this car. Dealer: Diamond Motor House in Leeds. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-fbc64ac61276

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, white, 48 miles from this car. Mileage: 66,190 miles. Price: £22,850, £8,051 more than this car. Dealer: ARJ Motors in Addlestone. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-10dd6d8ecc6c