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: 73,788 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X6 M Sport has covered 73,788 miles, around 26,400 more miles than is typical for its age. Priced at £36,649, it is advertised £963 above the AskCar estimate of £35,686. The AskCar estimate draws on 547 BMW X6 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 46 days ago, and its asking price has since fallen by £850. Its advertised mileage matches the government's MOT record. The seller is Halliwell Jones Warrington BMW, based in Warrington. 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: £963 (2%) over the AskCar estimate of £35,686.

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 2021 BMW X6 with the 3.0 diesel engine is typically advertised at £37,900: the median of the 39 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW X6 has been on sale for at least 46 days.

Price history

AskCar first saw this advert on 19 September 2026 at £37,499. Its asking price is now £36,649, £850 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 19 September 2026: £37,499
• 9 October 2026: £36,999
• 24 October 2026: £36,649

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 29 January 2027.

It has had 4 MOTs. The latest, on 22 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 67,304 miles, which matches the advertised 73,788 miles.

Advertised mileage is about 26,400 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 75,000 miles. Price: £31,500, £5,149 less than this car. Dealer: Auto 2000 in Havering. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-af77b1097200
• 2021 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 75,000 miles. Price: £34,995, £1,654 less than this car. Dealer: Car Quay in Derby. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-5b93625a3703
• 2021 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 71,472 miles. Price: £32,995, £3,654 less than this car. Dealer: Lookers in Newtownards. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-eeabed12dd53

• The nearest: 2021 BMW X6 M Sport, 3.0 diesel SUV, black, 2 miles from this car. Mileage: 35,610 miles. Price: £36,240, £409 less than this car. Dealer: Evans Halshaw Hyundai Warrington in Warrington. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-c26e7147b608