2021 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 (335 bhp)
• Year: 2021
• Mileage: 51,915 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 51,915 miles, this 2021 BMW X6 M Sport has covered about 4,500 more miles than other 2021 BMW X6 cars. The dealer is asking £40,599, which is £75 above the AskCar estimate of £40,524. To work out the AskCar estimate, we analyse UK dealer adverts for 547 BMW X6 cars across different ages and specifications. Since we first spotted the advert 58 days ago, the asking price has dropped by £1,400. We checked its advertised mileage against the government's MOT record, and they match. The seller is Stratstone Bmw Leeds, based in Leeds. 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

Fair price: £75 (under 1%) over the AskCar estimate of £40,524.

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 2021 BMW X6 with the 3.0 diesel engine is typically advertised at £37,900: the median of the 40 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW X6 has been on sale for at least 58 days.

Price history

AskCar first saw this advert on 8 September 2026 at £41,999. Its asking price is now £40,599, £1,400 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 8 September 2026: £41,999
• 23 September 2026: £41,899
• 4 October 2026: £41,599
• 10 October 2026: £41,399
• 23 October 2026: £40,790
• 5 November 2026: £40,599

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 5 February 2027.

It has had 3 MOTs. The latest, on 2 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 44,396 miles, which matches the advertised 51,915 miles.

Advertised mileage is about 4,500 miles higher than the median mileage of a 2021 BMW X6 on AskCar.

Similar cars

31 other 2021 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £29,999 to £43,500, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 51,600 miles. Price: £38,999, £1,600 less than this car. Dealer: Phoenix RC in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-f640397ba589
• 2021 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 49,500 miles. Price: £37,495, £3,104 less than this car. Dealer: Performance Hub MCR in Hyde. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-7723d3edda88
• 2021 BMW X6 M Sport, 3.0 diesel SUV, blue. Mileage: 47,400 miles. Price: £38,489, £2,110 less than this car. Dealer: A6 Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-7b6747230280

• The nearest: 2021 BMW X6 M Sport, 3.0 diesel SUV, green, 13 miles from this car. Mileage: 64,900 miles. Price: £37,850, £2,749 less than this car. Dealer: Hitchfields in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-d8b89ca23fd5