2023 BMW X6 3.0 40d MHT M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 40d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr
• Year: 2023
• Mileage: 47,544 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 47,544 miles on the clock, this 2023 BMW X6 M Sport has done roughly 19,300 more miles than a typical 2023 BMW X6. Its asking price of £39,800 is £954 below the AskCar estimate of £40,754. The AskCar estimate uses 547 UK dealer adverts for the BMW X6, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 100 days ago, the asking price has dropped by £3,000. Its advertised mileage matches the government's MOT record. The seller is Marshall BMW Grimsby, based in Grimsby. 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: £954 (2%) under the AskCar estimate of £40,754.

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 2023 BMW X6 with the 3.0 diesel engine is typically advertised at £48,600: the median of the 36 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2023 BMW X6 has been on sale for at least 100 days.

Price history

AskCar first saw this advert on 27 July 2026 at £42,800. Its asking price is now £39,800, £3,000 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 27 July 2026: £42,800
• 3 August 2026: £44,990
• 13 August 2026: £44,100
• 28 August 2026: £44,000
• 4 September 2026: £43,500
• 5 September 2026: £43,100
• 11 September 2026: £42,800
• 17 September 2026: £42,700
• 23 September 2026: £42,500
• 30 September 2026: £41,990
• 9 October 2026: £41,500
• 17 October 2026: £40,700
• 23 October 2026: £40,000
• 30 October 2026: £39,800

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 4 January 2027.

It has had one MOT, on 9 December 2025, and passed.

There were no advisories at the latest test.

Mileage at that test: 37,681 miles, which matches the advertised 47,544 miles.

Advertised mileage is about 19,300 miles higher than the median mileage of a 2023 BMW X6 on AskCar.

Similar cars

25 other 2023 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £36,995 to £59,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 49,653 miles. Price: £43,327, £3,527 more than this car. Dealer: Bowker Motor Group in Preston. AskCar page: https://askcar.co.uk/car/bmw-x6-2023-5bae5fd81d57
• 2023 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 50,390 miles. Price: £50,000, £10,200 more than this car. Dealer: Sytner Sheffield BMW in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-x6-2023-8aab315d3f1b
• 2023 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 54,730 miles. Price: £51,995, £12,195 more than this car. Dealer: Advanced Vehicle Leasing (Stockton) in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/bmw-x6-2023-70546e6c2301

• The nearest: 2023 BMW X6 M Sport, 3.0 diesel SUV, blue, 40 miles from this car. Mileage: 23,221 miles. Price: £45,975, £6,175 more than this car. Dealer: Listers in Boston. AskCar page: https://askcar.co.uk/car/bmw-x6-2023-a078ab24e738