2018 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: 2018
• Mileage: 55,433 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

At 55,433 miles, this 2018 BMW X3 M Sport has covered about 9,400 fewer miles than other 2018 BMW X3 cars. The AskCar estimate for this car is £20,150. It is priced at £18,600, which is £1,550 below that estimate. The AskCar estimate uses UK dealer asking prices, including 3,034 BMW X3 adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 1 day ago. The government's MOT record matches its advertised mileage. It is advertised by Car Planet Watford in Rickmansworth. 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: £1,550 (7%) under the AskCar estimate of £20,150.

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 2018 BMW X3 with the 2.0 diesel engine is typically advertised at £18,400: the median of the 147 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2018 BMW X3 advertised 1 day ago. About 4 in 10 of 2018 BMW X3 cars are gone from sale within a month of being advertised: 95 of the 216 first advertised between 9 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £18,600. 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 23 November 2026.

It has had 5 MOTs. The latest, on 17 November 2025, passed.

Advisories at the latest test: offside rear nail in tyre.

Mileage at that test: 49,741 miles, which matches the advertised 55,433 miles.

Advertised mileage is about 9,400 miles lower than the median mileage of a 2018 BMW X3 on AskCar.

Similar cars

79 other 2018 BMW X3 M Sport 2.0 diesel automatic SUVs are for sale at UK dealers, from £12,950 to £23,289, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 54,681 miles. Price: £19,695, £1,095 more than this car. Dealer: Jones Motor Company in Chester. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-f9bae4513fb6
• 2018 BMW X3 M Sport, 2.0 diesel SUV, white. Mileage: 54,596 miles. Price: £19,695, £1,095 more than this car. Dealer: Sycamore Stamford in Stamford. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-478b56a8b77c
• 2018 BMW X3 M Sport, 2.0 diesel SUV, grey. Mileage: 56,662 miles. Price: £19,730, £1,130 more than this car. Dealer: SKV Motors in Romford. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-60b16d749027

• The nearest: 2018 BMW X3 M Sport, 2.0 diesel SUV, black, 11 miles from this car. Mileage: 66,310 miles. Price: £17,995, £605 less than this car. Dealer: Merc Autobarn in Hayes. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-dca8f5ad18c7