2021 BMW X3 2.0 20d MHT M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 2.0 20d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (187 bhp)
• Year: 2021
• Mileage: 56,529 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 56,529 miles, this 2021 BMW X3 M Sport has covered about 7,600 more miles than other 2021 BMW X3 cars. Priced at £23,500, it is advertised £549 below the AskCar estimate of £24,049. To work out the AskCar estimate, we analyse UK dealer adverts for 3,034 BMW X3 cars across different ages and specifications. We first recorded this car for sale 19 days ago. Its advertised mileage matches the government's MOT record. The seller is Swale Auto Sales II, based in Brompton On Swale. 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: £549 (2%) under the AskCar estimate of £24,049.

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 2.0 diesel engine is typically advertised at £24,500: the median of the 174 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW X3 has been on sale for at least 19 days.

Price history

AskCar first saw this advert on 16 October 2026 at £23,500. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 6 May 2027.

It failed its MOT on 6 May 2026 (front windscreen wiper does not clear the windscreen effectively split; front windscreen washer not working) and passed 1 day later, on 7 May 2026.

Advisories at the latest test: offside front tyre worn close to legal limit/worn on edge just within limits; nearside rear tyre worn close to legal limit/worn on edge nail.

Mileage at that test: 50,121 miles, which matches the advertised 56,529 miles.

Advertised mileage is about 7,600 miles higher than the median mileage of a 2021 BMW X3 on AskCar.

Similar cars

95 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Sport, 2.0 diesel SUV, silver. Mileage: 55,608 miles. Price: £23,950, £450 more than this car. Dealer: Sandal BMW Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-86f67217be83
• 2021 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 57,671 miles. Price: £22,590, £910 less than this car. Dealer: Days Motorpark Cardiff in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-852840841a2f
• 2021 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 55,359 miles. Price: £23,750, £250 more than this car. Dealer: Sytner Solihull BMW in Solihull. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-c562bd409092

• The nearest: 2021 BMW X3 M Sport, 2.0 diesel SUV, silver, 3 miles from this car. Mileage: 59,550 miles. Price: £24,990, £1,490 more than this car. Dealer: Parker Prestige in Richmond. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-446fd7ad1b67