2021 BMW X3

Price: £22,993. Good value: £4,041 (14%) under the AskCar estimate of £27,034, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,099 priced BMW X3 adverts on AskCar as of 6 November 2026.

AskCar lists 3,164 used BMW X3 from 1,233 UK dealerships, as of 6 November 2026.

Overview

  • Make: BMW
  • Model: X3
  • Version: Auto 5dr
  • Year: 2021
  • Mileage: 41,693 miles
  • Body: SUV, 5 doors, 5 seats
  • Gearbox: Automatic
  • Colour: Blue
  • CO2: 154 g/km

About this car

At 41,693 miles, this 2021 BMW X3 has covered about 6,200 fewer miles than other 2021 BMW X3 cars. Its asking price of £22,993 is £4,041 below the AskCar estimate of £27,034. The AskCar estimate uses UK dealer asking prices, including 3,099 BMW X3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 43 days ago, the asking price has dropped by £997. The government's MOT record matches its advertised mileage. It is for sale at Partridge BMW in Eastleigh. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Good value: £4,041 (14%) under the AskCar estimate of £27,034.

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 3,099 priced BMW X3 adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2021 BMW X3 has been on sale for at least 43 days.

Price history

AskCar first saw this advert on 24 September 2026 at £23,990. Its asking price is now £22,993, £997 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

  • 24 September 2026: £23,990
  • 21 October 2026: £23,691
  • 28 October 2026: £23,392
  • 4 November 2026: £22,993

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 25 March 2027.

It has had 4 MOTs. The latest, on 6 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 38,188 miles, which matches the advertised 41,693 miles.

Advertised mileage is about 6,200 miles lower than the median mileage of a 2021 BMW X3 on AskCar.

Browse all BMW X3 cars for sale · 2021 BMW X3 price guide

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Photos

57 photos of this car are on its AskCar page.

As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.