2018 BMW X3 3.0 30d Xline

Overview

• Make: BMW
• Model: X3
• Trim: Xline
• Version: 3.0 30d Xline Auto 4WD Euro 6 (s/s) 5dr (261 bhp)
• Year: 2018
• Mileage: 50,584 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 261 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 158 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 50,584 miles on the clock, this 2018 BMW X3 Xline has done roughly 14,300 fewer miles than a typical 2018 BMW X3. Its asking price of £20,989 is £132 above the AskCar estimate of £20,857. The AskCar estimate uses UK dealer asking prices, including 3,034 BMW X3 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 160 days ago. Its asking price has since fallen by £2,001. We checked its advertised mileage against the government's MOT record, and they match. The seller is Vospers Approved Used St Austell, based in St Austell. 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

Fair price: £132 (under 1%) over the AskCar estimate of £20,857.

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 £22,990. Its asking price is now £20,989, £2,001 less. The latest price cut was seen on 25 August 2026.

Price changes recorded:

• 28 May 2026: £22,990
• 29 June 2026: £22,700
• 3 July 2026: £22,250
• 18 July 2026: £21,990
• 8 August 2026: £21,700
• 16 August 2026: £21,400
• 25 August 2026: £19,990
• 15 September 2026: £20,989

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 11 November 2026.

It has had 5 MOTs. The latest, on 27 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 46,908 miles, which matches the advertised 50,584 miles.

Advertised mileage is about 14,300 miles lower than the median mileage of a 2018 BMW X3 on AskCar.

Similar cars

4 other 2018 BMW X3 Xline 3.0 diesel automatic SUVs are for sale at UK dealers, from £18,200 to £19,950, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X3 Xline, 3.0 diesel SUV, white. Mileage: 44,787 miles. Price: £19,950, £1,039 less than this car. Dealer: cartime Rochdale in Rochdale. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-20cf89c8746c
• 2018 BMW X3 Xline, 3.0 diesel SUV, black. Mileage: 62,236 miles. Price: £18,280, £2,709 less than this car. Dealer: Evans Halshaw Hyundai Leeds in Leeds. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-ff2e12933d9c
• 2018 BMW X3 Xline, 3.0 diesel SUV, silver. Mileage: 64,609 miles. Price: £18,998, £1,991 less than this car. Dealer: Arnold Clark East Kilbride Motorstore in East Kilbride. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-5dce0eeace2c

• The nearest: 2018 BMW X3 Xline, 3.0 diesel SUV, grey, 202 miles from this car. Mileage: 74,000 miles. Price: £18,200, £2,789 less than this car. Dealer: Motonet.com in Coventry. AskCar page: https://askcar.co.uk/car/bmw-x3-2018-80fb78194d82