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: 85,245 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 M Sport is advertised with 85,245 miles, approximately 36,600 above the typical mileage for its age. Priced at £18,950, it is advertised £851 below the AskCar estimate of £19,801. To work out the AskCar estimate, we analyse UK dealer adverts for 2,992 BMW X3 cars across different ages and specifications. We first saw this car advertised 41 days ago. Its asking price has since fallen by £1,300. The government's MOT record matches its advertised mileage. It is for sale at Car Planet Watford in Rickmansworth. 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: £851 (4%) under the AskCar estimate of £19,801.

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

This 2021 BMW X3 has been on sale for at least 41 days.

Price history

AskCar first saw this advert on 22 September 2026 at £20,250. Its asking price is now £18,950, £1,300 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 22 September 2026: £20,250
• 7 October 2026: £19,950
• 13 October 2026: £19,650
• 19 October 2026: £19,350
• 26 October 2026: £19,100
• 1 November 2026: £18,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 11 June 2027.

It has had 3 MOTs. The latest, on 14 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 80,989 miles, which matches the advertised 85,245 miles.

Advertised mileage is about 36,600 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: 85,302 miles. Price: £18,450, £500 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-c82fb953279d
• 2021 BMW X3 M Sport, 2.0 diesel SUV, blue. Mileage: 85,000 miles. Price: £23,995, £5,045 more than this car. Dealer: Comiskey Motors in Newry. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-96937dd005af
• 2021 BMW X3 M Sport, 2.0 diesel SUV, grey. Mileage: 87,665 miles. Price: £20,000, £1,050 more than this car. Dealer: Marshall Honda Harrogate in Harrogate. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-17dfd701d98e

• The nearest: 2021 BMW X3 M Sport, 2.0 diesel SUV, silver, under a mile from this car. Mileage: 63,090 miles. Price: £21,150, £2,200 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-23d0903df2a0