2018 BMW X6 3.0 40d M Sport Edition

Overview

• Make: BMW
• Model: X6
• Trim: M Sport Edition
• Version: 3.0 40d M Sport Edition Auto 4WD Euro 6 (s/s) 5dr (309 bhp)
• Year: 2018
• Mileage: 34,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 183 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 34,000 miles, this 2018 BMW X6 M Sport Edition has covered about 29,200 fewer miles than other 2018 BMW X6 cars. Its asking price of £29,950 is £2,966 above the AskCar estimate of £26,984. The AskCar estimate draws on 547 BMW X6 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 161 days ago. Its advertised mileage matches the government's MOT record. The seller is First Autos, based in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £2,966 (10%) over the AskCar estimate of £26,984.

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 5 November 2026.

A 2018 BMW X6 with the 3.0 diesel engine is typically advertised at £22,000: the median of the 53 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW X6 has been on sale for at least 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £28,490. Its asking price is now £29,950, £1,460 more.

Price changes recorded:

• 29 May 2026: £28,490
• 31 May 2026: £27,990
• 22 June 2026: £27,490
• 25 June 2026: £26,990
• 4 August 2026: £29,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 20 November 2026.

It has had 5 MOTs. The latest, on 12 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 31,519 miles, which matches the advertised 34,000 miles.

Advertised mileage is about 29,200 miles lower than the median mileage of a 2018 BMW X6 on AskCar.

Similar cars

11 other 2018 BMW X6 M Sport Edition 3.0 diesel automatic SUVs are for sale at UK dealers, from £17,450 to £26,499, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X6 M Sport Edition, 3.0 diesel SUV, black. Mileage: 43,000 miles. Price: £23,995, £5,955 less than this car. Dealer: Sheering Car Sales in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-647a28e3731a
• 2018 BMW X6 M Sport Edition, 3.0 diesel SUV, white. Mileage: 24,172 miles. Price: £26,499, £3,451 less than this car. Dealer: Lookers BMW Stoke-On-Trent in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-d5c6584ad18f
• 2018 BMW X6 M Sport Edition, 3.0 diesel SUV, white. Mileage: 50,596 miles. Price: £23,990, £5,960 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-5f38457fc77c

• The nearest: 2018 BMW X6 M Sport Edition, 3.0 diesel SUV, white, 20 miles from this car. Mileage: 59,650 miles. Price: £22,490, £7,460 less than this car. Dealer: Hanar Cars (UK) in Hoddesdon. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-450e568ca2bd