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: 34,486 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

This 2021 BMW X3 M Sport has covered 34,486 miles, around 14,400 fewer miles than is typical for its age. The AskCar estimate for this car is £27,041. It is priced at £25,499, which is £1,542 below that estimate. The AskCar estimate uses 3,034 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 62 days ago, and its asking price has since fallen by £300. Its advertised mileage matches the government's MOT record. It is for sale at Available Car Supermarket - Castle Donington in Castle Donnington. 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: £1,542 (5%) under the AskCar estimate of £27,041.

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 62 days.

Price history

AskCar first saw this advert on 3 September 2026 at £25,799. Its asking price is now £25,499, £300 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 3 September 2026: £25,799
• 21 October 2026: £25,499

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 7 September 2027.

It has had 3 MOTs. The latest, on 13 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,455 miles, which matches the advertised 34,486 miles.

Advertised mileage is about 14,400 miles lower 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, grey. Mileage: 34,720 miles. Price: £25,900, £401 more than this car. Dealer: Carsa Cannock in Cannock. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-15acc3c55011
• 2021 BMW X3 M Sport, 2.0 diesel SUV, silver. Mileage: 35,005 miles. Price: £24,000, £1,499 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-3f2eef1cb253
• 2021 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 33,810 miles. Price: £24,830, £669 less than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-ea4e7e3ccc12

• The nearest: 2021 BMW X3 M Sport, 2.0 diesel SUV, black, 9 miles from this car. Mileage: 21,518 miles. Price: £28,750, £3,251 more than this car. Dealer: Sytner Nottingham BMW in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-66150e4b2ac7