2020 BMW X6 3.0 40d MHT M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 40d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (335 bhp)
• Year: 2020
• Mileage: 48,122 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW X6 M Sport has covered 48,122 miles. Its asking price of £36,000 is £2,159 below the AskCar estimate of £38,159. The AskCar estimate uses 547 UK dealer adverts for the BMW X6, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 47 days ago. Its asking price has since fallen by £2,590. The government's MOT record matches its advertised mileage. You can find this car at Sonny Adams Motor Company in Hertford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,159 (5%) under the AskCar estimate of £38,159.

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 547 priced BMW X6 adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW X6 with the 3.0 diesel engine is typically advertised at £36,000: the median of the 39 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 BMW X6 has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 19 September 2026 at £38,590. Its asking price is now £36,000, £2,590 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 19 September 2026: £38,590
• 20 September 2026: £38,550
• 22 September 2026: £38,100
• 23 September 2026: £38,790
• 27 September 2026: £38,000
• 6 October 2026: £36,500
• 22 October 2026: £36,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 22 December 2026.

It has had one MOT, on 23 December 2024, and passed.

There were no advisories at the latest test.

Mileage at that test: 26,821 miles, which matches the advertised 48,122 miles.

Advertised mileage is about 1,800 miles lower than the median mileage of a 2020 BMW X6 on AskCar.

Similar cars

18 other 2020 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £27,495 to £41,991, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW X6 M Sport, 3.0 diesel SUV, blue. Mileage: 48,000 miles. Price: £35,990, the same price as this car. Dealer: Strategic Vehicle Solutions in Boston. AskCar page: https://askcar.co.uk/car/bmw-x6-2020-4d0673d8a9e5
• 2020 BMW X6 M Sport, 3.0 diesel SUV, white. Mileage: 48,600 miles. Price: £35,000, £1,000 less than this car. Dealer: Sytner Leicester BMW in Leicester. AskCar page: https://askcar.co.uk/car/bmw-x6-2020-bfaca245a2d1
• 2020 BMW X6 M Sport, 3.0 diesel SUV, grey. Mileage: 49,500 miles. Price: £36,990, £990 more than this car. Dealer: Premier Vehicle Group in Cheadle. AskCar page: https://askcar.co.uk/car/bmw-x6-2020-84253619d820

• The nearest: 2020 BMW X6 M Sport, 3.0 diesel SUV, grey, 7 miles from this car. Mileage: 90,416 miles. Price: £27,495, £8,505 less than this car. Dealer: James Richards Car Sales in Stevenage. AskCar page: https://askcar.co.uk/car/bmw-x6-2020-09f855cfdc1c