2021 BMW X3 M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: M Sport Auto 4WD Euro 6 5dr
• Year: 2021
• Mileage: 31,209 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 M Sport has covered 31,209 miles, around 17,700 fewer miles than is typical for its age. Priced at £30,994, it is advertised £1,800 above the AskCar estimate of £29,194. 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 60 days ago, and its asking price has since fallen by £1,001. It is for sale at Ballyrobert Mallusk in Newtownabbey. 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: £1,800 (6%) over the AskCar estimate of £29,194.

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.

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 £31,995. Its asking price is now £30,994, £1,001 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 5 September 2026: £31,995
• 3 November 2026: £30,994

Mileage and MOT

Advertised mileage is about 17,700 miles lower than the median mileage of a 2021 BMW X3 on AskCar.