2020 BMW X3 2.0 20d M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 2.0 20d M Sport Auto 4WD Euro 6 (s/s) 5dr (187 bhp)
• Year: 2020
• Mileage: 42,775 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW X3 M Sport has covered 42,775 miles, around 9,300 fewer miles than is typical for its age. Its asking price of £22,450 is £1,610 below the AskCar estimate of £24,060. The AskCar estimate uses 3,076 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 5 days ago, the asking price has dropped by £6,340. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Big Motoring World Blue Bell Hill, based in Chatham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,610 (6%) under the AskCar estimate of £24,060.

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 3,076 priced BMW X3 adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW X3 with the 2.0 diesel engine is typically advertised at £22,200: the median of the 100 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2020 BMW X3 advertised 5 days ago. About 6 in 10 of 2020 BMW X3 cars are gone from sale within a month of being advertised: 132 of the 237 first advertised between 11 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 31 October 2026 at £28,790. Its asking price is now £22,450, £6,340 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 31 October 2026: £28,790
• 1 November 2026: £22,540
• 3 November 2026: £22,500
• 4 November 2026: £22,490
• 5 November 2026: £22,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 29 June 2027.

It failed its MOT on 12 June 2026 (engine MIL inoperative or indicates a malfunction) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 39,825 miles, which matches the advertised 42,775 miles.

Advertised mileage is about 9,300 miles lower than the median mileage of a 2020 BMW X3 on AskCar.

Similar cars

69 other 2020 BMW X3 M Sport 2.0 diesel automatic SUVs are for sale at UK dealers, from £16,499 to £28,295, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW X3 M Sport, 2.0 diesel SUV, grey. Mileage: 42,000 miles. Price: £25,995, £3,545 more than this car. Dealer: House Of Motors in Romford. AskCar page: https://askcar.co.uk/car/bmw-x3-2020-ff36889e1306
• 2020 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 43,594 miles. Price: £22,250, £200 less than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/bmw-x3-2020-b63694870dbe
• 2020 BMW X3 M Sport, 2.0 diesel SUV, blue. Mileage: 43,738 miles. Price: £23,999, £1,549 more than this car. Dealer: H.P.L. Motors - Oldham (Greater Manchester) in Oldham. AskCar page: https://askcar.co.uk/car/bmw-x3-2020-5b2ee3f274df