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: 46,000 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: 159 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 46,000 miles on the clock, this 2021 BMW X3 M Sport has done roughly 2,900 fewer miles than a typical 2021 BMW X3. The dealer is asking £28,450, which is £3,015 above the AskCar estimate of £25,435. 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 advert 49 days ago, and its asking price has since fallen by £540. Its advertised mileage matches the government's MOT record. The seller is Billington Motor Group, based in Burnley. 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

Above the going rate: £3,015 (11%) over the AskCar estimate of £25,435.

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 49 days.

Price history

AskCar first saw this advert on 16 September 2026 at £28,990. Its asking price is now £28,450, £540 less. The latest price cut was seen on 16 October 2026.

Price changes recorded:

• 16 September 2026: £28,990
• 27 September 2026: £28,949
• 16 October 2026: £28,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 8 June 2027.

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

Advisories at the latest test: child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 44,717 miles, which matches the advertised 46,000 miles.

Advertised mileage is about 2,900 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, black. Mileage: 46,139 miles. Price: £28,010, £440 less than this car. Dealer: Williams Bmw Stockport in Stockport. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-d3b34445295f
• 2021 BMW X3 M Sport, 2.0 diesel SUV, silver. Mileage: 45,812 miles. Price: £27,995, £455 less than this car. Dealer: Group 1 Cambridge BMW in Cambridge. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-cc6e834d0ca2
• 2021 BMW X3 M Sport, 2.0 diesel SUV, grey. Mileage: 45,407 miles. Price: £25,199, £3,251 less than this car. Dealer: Lookers BMW Stafford in Stafford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-045ddb6f131b

• The nearest: 2021 BMW X3 M Sport, 2.0 diesel SUV, white, under a mile from this car. Mileage: 33,430 miles. Price: £25,249, £3,201 less than this car. Dealer: Motorpoint Burnley in Burnley. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-9cb0fa777623