2018 BMW X3 3.0 30d M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 3.0 30d M Sport Auto 4WD Euro 6 (s/s) 5dr (261 bhp)
• Year: 2018
• Mileage: 26,595 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 261 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 26,595 miles, this 2018 BMW X3 M Sport has covered about 38,300 fewer miles than other 2018 BMW X3 cars. Priced at £22,900, it is advertised £4,108 below the AskCar estimate of £27,008. The AskCar estimate uses 3,034 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 160 days ago, the asking price has dropped by £3,450. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at 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

Good value: £4,108 (15%) under the AskCar estimate of £27,008.

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 3.0 diesel engine is typically advertised at £22,000: the median of the 64 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 BMW X3 has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £26,350. Its asking price is now £22,900, £3,450 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 28 May 2026: £26,350
• 3 June 2026: £26,200
• 16 June 2026: £26,150
• 22 June 2026: £26,000
• 6 July 2026: £25,900
• 13 July 2026: £25,750
• 20 July 2026: £25,600
• 27 July 2026: £25,550
• 3 August 2026: £25,500
• 10 August 2026: £25,450
• 23 August 2026: £25,400
• 1 September 2026: £25,450
• 8 September 2026: £25,350
• 15 September 2026: £25,300
• 22 September 2026: £25,000
• 28 September 2026: £24,700
• 4 October 2026: £24,400
• 9 October 2026: £24,100
• 16 October 2026: £23,800
• 21 October 2026: £23,500
• 28 October 2026: £23,200
• 3 November 2026: £22,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 18 August 2027.

It has had 7 MOTs. The latest, on 19 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 26,726 miles, which matches the advertised 26,595 miles.

Advertised mileage is about 38,300 miles lower than the median mileage of a 2018 BMW X3 on AskCar.

Similar cars

43 other 2018 BMW X3 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £17,495 to £29,450, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 31,414 miles. Price: £22,500, £400 less than this car. Dealer: Carbase Weston-super-Mare in Weston-super-Mare. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-b2dfe91bb5ca
• 2018 BMW X3 M Sport, 3.0 diesel SUV, white. Mileage: 31,813 miles. Price: £27,850, £4,950 more than this car. Dealer: Sandal BMW Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-a5d573df7ab1
• 2018 BMW X3 M Sport, 3.0 diesel SUV, blue. Mileage: 33,500 miles. Price: £22,690, £210 less than this car. Dealer: Werrington Motor Sales in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-12606fac4812

• The nearest: 2018 BMW X3 M Sport, 3.0 diesel SUV, grey, 12 miles from this car. Mileage: 43,904 miles. Price: £22,850, £50 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-af5971125392