2021 BMW X3 3.0 30d MHT M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 3.0 30d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (282 bhp)
• Year: 2021
• Mileage: 50,516 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 BMW X3 M Sport is 50,516 miles. Its asking price of £26,980 is £1,796 below the AskCar estimate of £28,776. The AskCar estimate uses UK dealer asking prices, including 3,034 BMW X3 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 54 days ago. Its asking price has since fallen by £2,810. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Phantom Motor Company, based in Wigan. 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: £1,796 (6%) under the AskCar estimate of £28,776.

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 3,034 priced BMW X3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 BMW X3 with the 3.0 diesel engine is typically advertised at £32,800: the median of the 41 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW X3 has been on sale for at least 54 days.

Price history

AskCar first saw this advert on 11 September 2026 at £29,790. Its asking price is now £26,980, £2,810 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 11 September 2026: £29,790
• 27 September 2026: £29,390
• 21 October 2026: £26,980

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 20 August 2027.

It has had 4 MOTs. The latest, on 21 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 50,163 miles, which matches the advertised 50,516 miles.

Advertised mileage is about 1,600 miles higher than the median mileage of a 2021 BMW X3 on AskCar.

Similar cars

13 other 2021 BMW X3 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £20,450 to £35,900, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 46,499 miles. Price: £31,500, £4,520 more than this car. Dealer: Sytner Warwick BMW in Warwick. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-f7fbaa9b9c3b
• 2021 BMW X3 M Sport, 3.0 diesel SUV, grey. Mileage: 54,746 miles. Price: £26,495, £485 less than this car. Dealer: Pinkstones Toyota in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-d282ecda98df
• 2021 BMW X3 M Sport, 3.0 diesel SUV, grey. Mileage: 42,000 miles. Price: £32,780, £5,800 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-bc643d11d2c7

• The nearest: 2021 BMW X3 M Sport, 3.0 diesel SUV, silver, 4 miles from this car. Mileage: 72,988 miles. Price: £26,495, £485 less than this car. Dealer: Josh Houghton Motor Company in Wigan. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-885b8c3834b2