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: 85,302 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 M Sport is advertised with 85,302 miles, approximately 36,400 above the typical mileage for its age. The AskCar estimate for this car is £19,741. It is priced at £18,450, which is £1,291 below that estimate. The AskCar estimate uses UK dealer asking prices, including 3,034 BMW X3 adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 60 days ago, and its asking price has since fallen by £1,300. Its advertised mileage matches the government's MOT record. 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 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,291 (6%) under the AskCar estimate of £19,741.

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 60 days.

Price history

AskCar first saw this advert on 5 September 2026 at £19,750. Its asking price is now £18,450, £1,300 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 5 September 2026: £19,750
• 18 September 2026: £19,550
• 24 September 2026: £19,350
• 30 September 2026: £19,200
• 7 October 2026: £19,050
• 12 October 2026: £18,800
• 19 October 2026: £18,750
• 1 November 2026: £18,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 19 April 2027.

It has had 4 MOTs. The latest, on 20 April 2026, passed.

Advisories at the latest test: front inner brake pad(s) wearing thin.

Mileage at that test: 78,697 miles, which matches the advertised 85,302 miles.

Advertised mileage is about 36,400 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, blue. Mileage: 85,245 miles. Price: £18,950, £500 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-4a99aa1f934e
• 2021 BMW X3 M Sport, 2.0 diesel SUV, blue. Mileage: 85,000 miles. Price: £23,995, £5,545 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, £1,550 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, £2,700 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-23d0903df2a0