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: 31,024 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 239 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW X3 M Competition is advertised with 31,024 miles, approximately 20,000 below the typical mileage for its age. Its asking price of £41,500 is £4,202 below the AskCar estimate of £45,702. The AskCar estimate draws on 128 BMW X3 M adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 20 days ago, the asking price has dropped by £4,200. Our records show an MOT expiry date of 4 October 2026, which has passed. Ask the dealer for an update. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Cotswold Group Select in Tewkesbury. 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

Good value: £4,202 (9%) under the AskCar estimate of £45,702.

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 128 priced BMW X3 M adverts across different ages and specifications, as of 4 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 4 November 2026.

Time on sale

This 2020 BMW X3 M has been on sale for at least 20 days.

Price history

AskCar first saw this advert on 15 October 2026 at £45,700. Its asking price is now £41,500, £4,200 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 15 October 2026: £45,700
• 25 October 2026: £42,000
• 1 November 2026: £41,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 4 October 2026; ask the dealer for the current MOT.

It has had 3 MOTs. The latest, on 3 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 27,407 miles, which matches the advertised 31,024 miles.

Advertised mileage is about 20,000 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 4 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 33,717 miles. Price: £43,299, £1,799 more than this car. Dealer: Sandles Cars in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-4e4ea5f14505
• 2020 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 33,755 miles. Price: £44,990, £3,490 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, blue. Mileage: 38,938 miles. Price: £38,998, £2,502 less than this car. Dealer: Arnold Clark Manchester Vauxhall in Manchester. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-ba74876be31e

• The nearest: 2020 BMW X3 M Competition, 3.0 petrol SUV, blue, 60 miles from this car. Mileage: 43,499 miles. Price: £41,523, the same price as this car. Dealer: Acorn Specialist Cars in Stone. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-6a7f3887ec94