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: 80,000 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 has covered 80,000 miles. Priced at £20,995, it is advertised £969 above the AskCar estimate of £20,026. The AskCar estimate uses 536 UK dealer adverts for the BMW X6, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 125 days ago, the asking price has dropped by £2,000. The latest MOT recorded 81,063 miles, above the advertised mileage. Check this with the dealer. Our records show an MOT expiry date of 16 October 2026, which has passed. Ask the dealer for an update. You can find this car at CarPlex in Hailsham. 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: £969 (4%) over the AskCar estimate of £20,026.

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 125 days.

Price history

AskCar first saw this advert on 30 June 2026 at £22,995. Its asking price is now £20,995, £2,000 less. The latest price cut was seen on 29 August 2026.

Price changes recorded:

• 30 June 2026: £22,995
• 12 July 2026: £21,995
• 6 August 2026: £21,495
• 29 August 2026: £20,995

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 16 October 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 17 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 81,063 miles. The advert says 80,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 16,900 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: 80,600 miles. Price: £22,495, £1,500 more than this car. Dealer: Charles Prestige in Carterton. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-b8bee5c45b7a
• 2018 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 78,946 miles. Price: £18,995, £2,000 less than this car. Dealer: JCT600 Doncaster Audi in Doncaster. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-bd36ff41d0d3
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 78,940 miles. Price: £19,995, £1,000 less than this car. Dealer: Parkland Motors in Costock. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-5ca2d82b8549

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, white, 47 miles from this car. Mileage: 66,190 miles. Price: £22,850, £1,855 more than this car. Dealer: ARJ Motors in Addlestone. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-10dd6d8ecc6c