2018 BMW X6 3.0 40d M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 40d M Sport Auto 4WD Euro 6 (s/s) 5dr (309 bhp)
• Year: 2018
• Mileage: 85,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 309 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 165 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW X6 M Sport is advertised with 85,000 miles on the clock. Its asking price of £23,995 is £4,606 above the AskCar estimate of £19,389. To work out the AskCar estimate, we analyse UK dealer adverts for 536 BMW X6 cars across different ages and specifications. We have tracked this advert for 158 days. The last MOT shows 109,727 miles, more than the advert. This is worth checking with the dealer. The latest recorded MOT expires on 4 April 2027. It is advertised by Firstgear Cars in Hoddesdon. 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

Above the going rate: £4,606 (23%) over the AskCar estimate of £19,389.

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 536 priced BMW X6 adverts across different ages and specifications, as of 2 November 2026.

A 2018 BMW X6 with the 3.0 diesel engine is typically advertised at £22,000: the median of the 52 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 BMW X6 has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £23,995. 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 4 April 2027.

It has had 7 MOTs. The latest, on 3 April 2026, passed.

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

Mileage at that test: 109,727 miles. The advert says 85,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 21,900 miles higher than the median mileage of a 2018 BMW X6 on AskCar.

Similar cars

31 other 2018 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £13,995 to £29,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 85,000 miles. Price: £19,950, £4,045 less than this car. Dealer: Best4U Motors in Brentwood. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-91d61790272d
• 2018 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 85,086 miles. Price: £18,745, £5,250 less than this car. Dealer: Georgesons Car Sales in Liverpool. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-9c58d000e21c
• 2018 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 84,610 miles. Price: £19,850, £4,145 less than this car. Dealer: Parkside Motors in Edgware. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-331b3ac14e91

• The nearest: 2018 BMW X6 M Sport, 3.0 diesel SUV, red, under a mile from this car. Mileage: 53,450 miles. Price: £22,490, £1,505 less than this car. Dealer: Hanar Cars (UK) in Hoddesdon. AskCar page: https://askcar.co.uk/car/bmw-x6-2018-9c9a936f29b4