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: 35,110 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X3 M Sport is advertised with 35,110 miles, approximately 29,800 below the typical mileage for its age. The dealer is asking £20,250, which is £2,200 below the AskCar estimate of £22,450. 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 43 days ago. Its asking price has since fallen by £1,200. The government's MOT record matches its advertised mileage. It is advertised by Car Planet Barnet in New Southgate. 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: £2,200 (9%) under the AskCar estimate of £22,450.

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

This 2018 BMW X3 has been on sale for at least 43 days.

Price history

AskCar first saw this advert on 22 September 2026 at £21,450. Its asking price is now £20,250, £1,200 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 22 September 2026: £21,450
• 12 October 2026: £21,150
• 19 October 2026: £20,850
• 26 October 2026: £20,550
• 1 November 2026: £20,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 19 September 2027.

It has had 6 MOTs. The latest, on 10 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,783 miles, which matches the advertised 35,110 miles.

Advertised mileage is about 29,800 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: 36,000 miles. Price: £22,000, £1,750 more than this car. Dealer: Sytner Oldbury BMW in Oldbury. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-710ea5cac93a
• 2018 BMW X3 M Sport, 2.0 diesel SUV, white. Mileage: 33,498 miles. Price: £21,392, £1,142 more than this car. Dealer: West Riding Hyundai Blackpool in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-10724f152e8f
• 2018 BMW X3 M Sport, 2.0 diesel SUV, black. Mileage: 30,233 miles. Price: £21,995, £1,745 more than this car. Dealer: Wheelers Chipping Norton in Chipping Norton. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-6db462328a37

• The nearest: 2018 BMW X3 M Sport, 2.0 diesel SUV, black, 12 miles from this car. Mileage: 55,433 miles. Price: £18,600, £1,650 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-7008062fcad3