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: 83,250 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

This 2021 BMW X6 M Sport is advertised with 83,250 miles, approximately 35,900 above the typical mileage for its age. The AskCar estimate for this car is £33,475. It is priced at £33,989, which is £514 above that estimate. The AskCar estimate draws on 547 BMW X6 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 27 days ago, the asking price has dropped by £1,000. The government's MOT record matches its advertised mileage. You can find this car at FTR Performance in Dunstable. 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: £514 (1%) over the AskCar estimate of £33,475.

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 27 days.

Price history

AskCar first saw this advert on 9 October 2026 at £34,989. Its asking price is now £33,989, £1,000 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 9 October 2026: £34,989
• 22 October 2026: £36,440
• 4 November 2026: £33,989

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 22 January 2027.

It has had 4 MOTs. The latest, on 9 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 65,137 miles, which matches the advertised 83,250 miles.

Advertised mileage is about 35,900 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, yellow. Mileage: 83,876 miles. Price: £33,995, the same price as this car. Dealer: KAYENN Prestige in Heywood. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-9cf6749e5b6f
• 2021 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 81,956 miles. Price: £31,080, £2,909 less than this car. Dealer: Evans Halshaw Ford Hull East in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-4b2072a58e57
• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 85,010 miles. Price: £29,999, £3,990 less than this car. Dealer: cartime Rochdale in Rochdale. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-0b1ea27aff33

• The nearest: 2021 BMW X6 M Sport, 3.0 diesel SUV, blue, 8 miles from this car. Mileage: 47,400 miles. Price: £38,489, £4,500 more than this car. Dealer: A6 Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-7b6747230280