2021 BMW X3 3.0 M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 3.0 MHT M Sport Auto 4WD Euro 6 5dr
• Year: 2021
• Mileage: 41,202 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 172 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 41,202 miles on the clock, this 2021 BMW X3 M Sport has done roughly 7,700 fewer miles than a typical 2021 BMW X3. The dealer is asking £29,950, which is £376 below the AskCar estimate of £30,326. 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 car for sale 1 day ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Cotswold Bmw Cheltenham, based in Cheltenham. 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: £376 (1%) under the AskCar estimate of £30,326.

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 3.0 diesel engine is typically advertised at £32,800: the median of the 41 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2021 BMW X3 advertised 1 day ago. About half of 2021 BMW X3 cars are gone from sale within a month of being advertised: 142 of the 303 first advertised between 13 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £29,950. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 27 May 2027.

It has had 3 MOTs. The latest, on 15 May 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 38,477 miles, which matches the advertised 41,202 miles.

Advertised mileage is about 7,700 miles lower than the median mileage of a 2021 BMW X3 on AskCar.

Similar cars

13 other 2021 BMW X3 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £20,450 to £35,900, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Sport, 3.0 diesel SUV, grey. Mileage: 42,000 miles. Price: £32,780, £2,830 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-bc643d11d2c7
• 2021 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 46,499 miles. Price: £31,500, £1,550 more than this car. Dealer: Sytner Warwick BMW in Warwick. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-f7fbaa9b9c3b
• 2021 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 32,656 miles. Price: £26,750, £3,200 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-c4667419414f