2018 BMW X3 3.0 30d M Sport
Price: £20,981. Fair price: £1,092 (5%) over the AskCar estimate of £19,889, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,992 priced BMW X3 adverts on AskCar as of 2 November 2026.
AskCar lists 3,072 used BMW X3 from 1,209 UK dealerships, as of 2 November 2026.
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: 79,300 miles
- Fuel: Diesel
- Body: SUV, 5 doors, 5 seats
- Engine: 3.0 litres, 261 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Grey
- CO2: 157 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 79,300 miles on the clock, this 2018 BMW X3 M Sport has done roughly 14,900 more miles than a typical 2018 BMW X3. Its asking price of £20,981 is £1,092 above the AskCar estimate of £19,889. The AskCar estimate uses 2,992 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 12 days. Its advertised mileage matches the government's MOT record. The seller is Nortree Motor Company, based in Melksham. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £1,092 (5%) over the AskCar estimate of £19,889.
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 2,992 priced BMW X3 adverts across different ages and specifications, as of 2 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 2 November 2026.
Time on sale
This 2018 BMW X3 has been on sale for at least 12 days.
Price history
AskCar first saw this advert on 21 October 2026 at £20,981. 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 2 November 2026: valid until 25 September 2027.
It has had 6 MOTs. The latest, on 3 September 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 78,001 miles, which matches the advertised 79,300 miles.
Advertised mileage is about 14,900 miles higher 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 £15,950 to £29,950, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 BMW X3 M Sport, 3.0 diesel SUV, black. Mileage: 79,483 miles. Price: £24,000, £3,019 more than this car. Dealer: Sytner Nottingham BMW in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-dc165de5364c
- 2018 BMW X3 M Sport, 3.0 diesel SUV, grey. Mileage: 80,000 miles. Price: £18,850, £2,131 less than this car. Dealer: AMD Automotive in Stockport. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-b08fe11da020
- 2018 BMW X3 M Sport, 3.0 diesel SUV, white. Mileage: 77,842 miles. Price: £19,988, £993 less than this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-8cc1b6c7e40a
- The nearest: 2018 BMW X3 M Sport, 3.0 diesel SUV, blue, 35 miles from this car. Mileage: 31,414 miles. Price: £22,500, £1,519 more than this car. Dealer: Carbase Weston-super-Mare in Weston-super-Mare. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-b2dfe91bb5ca
Browse all BMW X3 cars for sale · 2018 BMW X3 price guide
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Photos
1 photo of this car is on its AskCar page.
As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.