2021 BMW X6 M 4.4 i V8 Competition

Overview

• Make: BMW
• Model: X6 M
• Trim: Competition
• Version: 4.4 i V8 Competition Auto 4WD Euro 6 (s/s) 5dr (616 bhp)
• Year: 2021
• Mileage: 18,599 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.4 litres, 616 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 303 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X6 M Competition has covered 18,599 miles, around 11,000 fewer miles than is typical for its age. Its asking price of £59,810 is £3,254 below the AskCar estimate of £63,064. The AskCar estimate draws on 55 BMW X6 M adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 160 days ago, and its asking price has since fallen by £8,180. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by BUY & Go Cars in Cardiff. 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: £3,254 (5%) under the AskCar estimate of £63,064.

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 55 priced BMW X6 M adverts across different ages and specifications, as of 4 November 2026.

Time on sale

This 2021 BMW X6 M has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £67,990. Its asking price is now £59,810, £8,180 less. The latest price cut was seen on 14 October 2026.

Price changes recorded:

• 29 May 2026: £67,990
• 6 June 2026: £65,820
• 8 July 2026: £64,920
• 4 August 2026: £64,720
• 21 August 2026: £64,260
• 2 September 2026: £63,990
• 23 September 2026: £61,740
• 14 October 2026: £59,810

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 9 February 2027.

It has had 3 MOTs. The latest, on 10 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 18,105 miles, which matches the advertised 18,599 miles.

Advertised mileage is about 11,000 miles lower than the median mileage of a 2021 BMW X6 M on AskCar.

Similar cars

8 other 2021 BMW X6 M Competition 4.4 petrol automatic SUVs are for sale at UK dealers, from £48,500 to £69,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Competition, 4.4 petrol SUV, grey. Mileage: 19,000 miles. Price: £57,950, £1,860 less than this car. Dealer: Farlan Automotive in Wembley. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-7a753d24e6fd
• 2021 BMW X6 M Competition, 4.4 petrol SUV, black. Mileage: 18,058 miles. Price: £58,998, £812 less than this car. Dealer: Arnold Clark Armadale Citroen Leapmotor Vanstore in Armadale. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-48d66b93d930
• 2021 BMW X6 M Competition, 4.4 petrol SUV, blue. Mileage: 23,000 miles. Price: £61,885, £2,075 more than this car. Dealer: Wembley Prestige Cars in Watford. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-366fc6d6280b

• The nearest: 2021 BMW X6 M Competition, 4.4 petrol SUV, black, 121 miles from this car. Mileage: 45,000 miles. Price: £69,995, £10,185 more than this car. Dealer: AH Specialist Cars in Watford. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-82d6f88ac2bb