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: 18,058 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 18,058 miles, around 11,500 fewer miles than is typical for its age. The dealer is asking £58,998, which is £4,208 below the AskCar estimate of £63,206. To work out the AskCar estimate, we analyse UK dealer adverts for 53 BMW X6 M cars across different ages and specifications. Since we first spotted the advert 78 days ago, the asking price has dropped by £4,000. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Armadale Citroen Leapmotor Vanstore, based in Armadale. 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: £4,208 (6%) under the AskCar estimate of £63,206.

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 53 priced BMW X6 M adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW X6 M has been on sale for at least 78 days.

Price history

AskCar first saw this advert on 19 August 2026 at £62,998. Its asking price is now £58,998, £4,000 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 19 August 2026: £62,998
• 2 October 2026: £61,498
• 24 October 2026: £58,998

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 September 2027.

It has had 6 MOTs. The latest, on 18 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 18,016 miles, which matches the advertised 18,058 miles.

Advertised mileage is about 11,500 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Competition, 4.4 petrol SUV, black. Mileage: 18,599 miles. Price: £59,810, £812 more than this car. Dealer: BUY & Go Cars in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-245ec9f4cf80
• 2021 BMW X6 M Competition, 4.4 petrol SUV, grey. Mileage: 19,000 miles. Price: £57,950, £1,048 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, blue. Mileage: 23,000 miles. Price: £61,885, £2,887 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, red, 178 miles from this car. Mileage: 25,101 miles. Price: £52,724, £6,274 less than this car. Dealer: Halliwell Jones Warrington BMW in Warrington. AskCar page: https://askcar.co.uk/car/bmw-x6-m-2021-93e39f73a5ad