2021 BMW X6 3.0 40i MHT M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 MHT M Sport Auto 4WD Euro 6 5dr
• Year: 2021
• Mileage: 55,500 miles
• Fuel: Petrol, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 211 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X6 M Sport is advertised with 55,500 miles, approximately 7,100 above the typical mileage for its age. Its asking price of £40,290 is £1,765 above the AskCar estimate of £38,525. The AskCar estimate uses 547 UK dealer adverts for the BMW X6, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 41 days ago, the asking price has dropped by £700. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Williams Bmw Stockport, based in Stockport. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,765 (4%) over the AskCar estimate of £38,525.

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 6 November 2026.

A 2021 BMW X6 with the 3.0 petrol engine is typically advertised at £37,900: the median of the 39 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 BMW X6 has been on sale for at least 41 days.

Price history

AskCar first saw this advert on 26 September 2026 at £40,990. Its asking price is now £40,290, £700 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 26 September 2026: £40,990
• 9 October 2026: £40,790
• 21 October 2026: £40,490
• 4 November 2026: £40,290

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 28 April 2027.

It failed its MOT on 28 April 2026 (offside front suspension arm pin or bush excessively worn brake reaction bush; offside rear tyre has a bulge, caused by separation or partial failure of its structure; nearside rear tyre has ply or cords exposed) and passed 1 day later, on 29 April 2026.

There were no advisories at the latest test.

Mileage at that test: 49,984 miles, which matches the advertised 55,500 miles.

Advertised mileage is about 7,100 miles higher than the median mileage of a 2021 BMW X6 on AskCar.

Similar cars

4 other 2021 BMW X6 M Sport 3.0 petrol automatic SUVs are for sale at UK dealers, from £40,993 to £44,000, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Sport, 3.0 petrol SUV, grey. Mileage: 37,189 miles. Price: £40,993, £703 more than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-e65851833fbb
• 2021 BMW X6 M Sport, 3.0 petrol SUV, green. Mileage: 32,286 miles. Price: £44,000, £3,710 more than this car. Dealer: Sytner Tring BMW in Tring. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-cc56957820a8
• 2021 BMW X6 M Sport, 3.0 petrol SUV, black. Mileage: 31,129 miles. Price: £42,476, £2,186 more than this car. Dealer: Prestige Cars Kent in Bromley. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-3f6eeccc4e0f

• The nearest: 2021 BMW X6 M Sport, 3.0 petrol SUV, white, 31 miles from this car. Mileage: 27,000 miles. Price: £41,890, £1,600 more than this car. Dealer: Sytner Sheffield BMW in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-76d748faf9d7