2021 BMW X3 2.0 20d MHT M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 2.0 xDrive20d MHT M Sport Auto 4WD Euro 6 5dr Step (187 bhp)
• Year: 2021
• Mileage: 70,308 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 70,308 miles, this 2021 BMW X3 M Sport has covered about 21,700 more miles than other 2021 BMW X3 cars. Its asking price of £22,400 is £934 above the AskCar estimate of £21,466. The AskCar estimate uses UK dealer asking prices, including 2,992 BMW X3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 5 days ago, the asking price has dropped by £200. Its advertised mileage matches the government's MOT record. The seller is Marshall BMW Grimsby, based in Grimsby. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £934 (4%) over the AskCar estimate of £21,466.

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 2,992 priced BMW X3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 BMW X3 with the 2.0 diesel engine is typically advertised at £24,600: the median of the 174 for sale on AskCar, as of 2 November 2026.

Time on sale

AskCar first saw this 2021 BMW X3 advertised 5 days ago. About half of 2021 BMW X3 cars are gone from sale within a month of being advertised: 136 of the 286 first advertised between 13 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 28 October 2026 at £22,600. Its asking price is now £22,400, £200 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 28 October 2026: £22,600
• 30 October 2026: £22,400

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 31 March 2027.

It has had 3 MOTs. The latest, on 5 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 64,365 miles, which matches the advertised 70,308 miles.

Advertised mileage is about 21,700 miles higher than the median mileage of a 2021 BMW X3 on AskCar.

Similar cars

97 other 2021 BMW X3 M Sport 2.0 diesel automatic SUVs are for sale at UK dealers, from £16,295 to £35,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Sport, 2.0 diesel SUV, white. Mileage: 70,616 miles. Price: £22,050, £350 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-9aa4ae5e808a
• 2021 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 68,705 miles. Price: £23,460, £1,060 more than this car. Dealer: Berry Croydon BMW in Croydon. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-7e2cbbe1f328
• 2021 BMW X3 M Sport, 2.0 diesel SUV, blue. Mileage: 68,653 miles. Price: £22,500, £100 more than this car. Dealer: Sytner Newport BMW in Newport. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-3b8f575138a4

• The nearest: 2021 BMW X3 M Sport, 2.0 diesel SUV, grey, 20 miles from this car. Mileage: 16,605 miles. Price: £26,990, £4,590 more than this car. Dealer: Daniel Alexander Motor Group in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-4e0dd0572f35