2020 BMW X3 M 3.0 Competition

Overview

• Make: BMW
• Model: X3 M
• Trim: Competition
• Version: 3.0 i Competition Auto 4WD Euro 6 (s/s) 5dr (503 bhp)
• Year: 2020
• Mileage: 38,938 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 239 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 38,938 miles on the clock, this 2020 BMW X3 M Competition has done roughly 12,100 fewer miles than a typical 2020 BMW X3 M. The AskCar estimate for this car is £43,814. It is priced at £38,998, which is £4,816 below that estimate. The AskCar estimate uses 130 UK dealer adverts for the BMW X3 M, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 112 days ago, the asking price has dropped by £4,000. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Manchester Vauxhall, based in Manchester. 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

Good value: £4,816 (10%) under the AskCar estimate of £43,814.

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 130 priced BMW X3 M adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW X3 M with the 3.0 petrol engine is typically advertised at £39,500: the median of the 16 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 BMW X3 M has been on sale for at least 112 days.

Price history

AskCar first saw this advert on 16 July 2026 at £42,998. Its asking price is now £38,998, £4,000 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 16 July 2026: £42,998
• 28 July 2026: £42,498
• 9 September 2026: £41,498
• 26 September 2026: £40,998
• 12 October 2026: £39,998
• 25 October 2026: £38,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 30 June 2027.

It has had 5 MOTs. The latest, on 1 July 2026, passed.

Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened; rear brake disc worn, pitted or scored, but not seriously weakened; nearside front outer tyre worn close to legal limit/worn on edge; and 1 more.

Mileage at that test: 38,938 miles, which matches the advertised 38,938 miles.

Advertised mileage is about 12,100 miles lower than the median mileage of a 2020 BMW X3 M on AskCar.

Similar cars

13 other 2020 BMW X3 M Competition 3.0 petrol automatic SUVs are for sale at UK dealers, from £31,995 to £44,990, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW X3 M Competition, 3.0 petrol SUV, blue. Mileage: 43,499 miles. Price: £41,499, £2,501 more than this car. Dealer: Acorn Specialist Cars in Stone. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-6a7f3887ec94
• 2020 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 33,755 miles. Price: £44,990, £5,992 more than this car. Dealer: Saltmarine Cars in Dungannon. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-e759a98cab26
• 2020 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 33,717 miles. Price: £43,299, £4,301 more than this car. Dealer: Sandles Cars in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-4e4ea5f14505

• The nearest: 2020 BMW X3 M Competition, 3.0 petrol SUV, grey, 7 miles from this car. Mileage: 57,000 miles. Price: £37,895, £1,103 less than this car. Dealer: HK Performance in Manchester. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-7449fbb13909