2021 BMW X3 3.0 30d MHT M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 3.0 MHT M Sport Auto 4WD Euro 6 5dr (282 bhp)
• Year: 2021
• Mileage: 21,146 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 21,146 miles, this 2021 BMW X3 M Sport has covered about 27,700 fewer miles than other 2021 BMW X3 cars. The AskCar estimate for this car is £33,387. It is priced at £30,489, which is £2,898 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 3,034 BMW X3 cars across different ages and specifications. We first saw this car advertised 49 days ago. Its asking price has since fallen by £2,144. We checked its advertised mileage against the government's MOT record, and they match. The seller is LSH Auto Mercedes-Benz of Stockport, based in Stockport. 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

Good value: £2,898 (8%) under the AskCar estimate of £33,387.

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

This 2021 BMW X3 has been on sale for at least 49 days.

Price history

AskCar first saw this advert on 16 September 2026 at £32,633. Its asking price is now £30,489, £2,144 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 16 September 2026: £32,633
• 1 October 2026: £32,897
• 14 October 2026: £31,923
• 22 October 2026: £30,800
• 29 October 2026: £30,489

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 28 March 2027.

It has had 3 MOTs. The latest, on 26 March 2026, passed.

Advisories at the latest test: covers fitted obscuring some components in the engine bay; under-trays fitted obscuring some underside components.

Mileage at that test: 19,077 miles, which matches the advertised 21,146 miles.

Advertised mileage is about 27,700 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, black. Mileage: 23,953 miles. Price: £35,900, £5,411 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-21d922754054
• 2021 BMW X3 M Sport, 3.0 diesel SUV, black. Mileage: 31,209 miles. Price: £30,995, £506 more than this car. Dealer: Ballyrobert Mallusk in Belfast. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-9f445228bfa2
• 2021 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 32,656 miles. Price: £26,750, £3,739 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-c4667419414f

• The nearest: 2021 BMW X3 M Sport, 3.0 diesel SUV, grey, 16 miles from this car. Mileage: 78,763 miles. Price: £21,973, £8,516 less than this car. Dealer: Carsa Bolton in Bolton. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-de39d2d84b14