2018 BMW X3 2.0 20d M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 2.0 xDrive20d M Sport Auto 4WD Euro 6 5dr (187 bhp)
• Year: 2018
• Mileage: 28,369 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 165 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X3 M Sport has covered 28,369 miles, around 35,300 fewer miles than is typical for its age. Priced at £21,500, it is advertised £1,454 below the AskCar estimate of £22,954. The AskCar estimate uses 3,049 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 79 days ago. Its asking price has since fallen by £3,000. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner High Wycombe BMW, based in High Wycombe. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,454 (6%) under the AskCar estimate of £22,954.

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 3,049 priced BMW X3 adverts across different ages and specifications, as of 12 November 2026.

A 2018 BMW X3 with the 2.0 diesel engine is typically advertised at £18,400: the median of the 153 for sale on AskCar, as of 12 November 2026.

Time on sale

This 2018 BMW X3 has been on sale for at least 79 days.

Price history

AskCar first saw this advert on 25 August 2026 at £24,500. Its asking price is now £21,500, £3,000 less. The latest price cut was seen on 10 November 2026.

Price changes recorded:

• 25 August 2026: £24,500
• 22 September 2026: £24,000
• 6 October 2026: £23,500
• 13 October 2026: £22,500
• 22 October 2026: £22,000
• 10 November 2026: £21,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 12 November 2026: valid until 1 May 2027.

It has had 9 MOTs. The latest, on 28 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 27,091 miles, which matches the advertised 28,369 miles.

Advertised mileage is about 35,300 miles lower than the median mileage of a 2018 BMW X3 on AskCar.

Similar cars

81 other 2018 BMW X3 M Sport 2.0 diesel automatic SUVs are for sale at UK dealers, from £12,950 to £24,450, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X3 M Sport, 2.0 diesel SUV, white. Mileage: 29,950 miles. Price: £21,750, £250 more than this car. Dealer: Sytner Oldbury BMW in Oldbury. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-1d6adb73f9ed
• 2018 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 30,233 miles. Price: £20,995, £505 less than this car. Dealer: Wheelers Chipping Norton in Chipping Norton. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-6db462328a37
• 2018 BMW X3 M Sport, 2.0 diesel SUV, blue. Mileage: 25,937 miles. Price: £21,500, the same price as this car. Dealer: Sytner High Wycombe BMW in High Wycombe. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-6c54dad3518c