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: 67,296 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 261 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 67,296 miles, this 2018 BMW X3 M Sport has covered about 2,900 more miles than other 2018 BMW X3 cars. The dealer is asking £21,991, which is £342 above the AskCar estimate of £21,649. To work out the AskCar estimate, we analyse UK dealer adverts for 2,992 BMW X3 cars across different ages and specifications. It first appeared in our advert records 16 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Cardiff Trade Sales, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £342 (1%) over the AskCar estimate of £21,649.

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 16 days.

Price history

AskCar first saw this advert on 17 October 2026 at £21,991. 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 9 November 2026.

It failed its MOT on 6 November 2025 (windscreen wiper does not clear the windscreen effectively both front torn) and passed later the same day.

Advisories at the latest test: tyre worn close to legal limit/worn on edge both rear; tyre worn close to legal limit/worn on edge both front inner edges.

Mileage at that test: 60,258 miles, which matches the advertised 67,296 miles.

Advertised mileage is about 2,900 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, blue. Mileage: 68,601 miles. Price: £21,099, £892 less than this car. Dealer: Lookers Mercedes-Benz of Shrewsbury in Shrewsbury. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-ee97904c1d65
• 2018 BMW X3 M Sport, 3.0 diesel SUV, black. Mileage: 65,715 miles. Price: £20,995, £996 less than this car. Dealer: Georgesons Car Sales in Liverpool. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-b314b45b04f7
• 2018 BMW X3 M Sport, 3.0 diesel SUV, grey. Mileage: 65,692 miles. Price: £21,793, £198 less than this car. Dealer: Group 1 Bedford BMW in Bedford. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-914710dbe065

• The nearest: 2018 BMW X3 M Sport, 3.0 diesel SUV, blue, 13 miles from this car. Mileage: 31,414 miles. Price: £22,500, £509 more than this car. Dealer: Carbase Weston-super-Mare in Weston-super-Mare. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-b2dfe91bb5ca