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: 33,717 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 239 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW X3 M Competition has covered 33,717 miles, around 17,300 fewer miles than is typical for its age. Its asking price of £43,299 is £1,746 below the AskCar estimate of £45,045. To work out the AskCar estimate, we analyse UK dealer adverts for 128 BMW X3 M cars across different ages and specifications. We first recorded this advert 91 days ago, and its asking price has since fallen by £1,500. The recorded MOT expired on 4 September 2026, so ask the dealer whether it has been renewed. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Sandles Cars in Kings Lynn. 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: £1,746 (3%) under the AskCar estimate of £45,045.

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 91 days.

Price history

AskCar first saw this advert on 5 August 2026 at £44,799. Its asking price is now £43,299, £1,500 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 6 August 2026: £44,799
• 9 September 2026: £44,499
• 23 September 2026: £43,999
• 14 October 2026: £43,499
• 27 October 2026: £43,299

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 September 2026; ask the dealer for the current MOT.

It failed its MOT on 5 August 2025 (registration plate does not conform to the specified requirements front and rear) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 28,804 miles, which matches the advertised 33,717 miles.

Advertised mileage is about 17,300 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, grey. Mileage: 33,755 miles. Price: £44,990, £1,691 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, grey. Mileage: 31,024 miles. Price: £41,500, £1,799 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-d9f1f69b5442
• 2020 BMW X3 M Competition, 3.0 petrol SUV, blue. Mileage: 38,938 miles. Price: £38,998, £4,301 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, grey, 45 miles from this car. Mileage: 45,128 miles. Price: £42,495, £804 less than this car. Dealer: EAG Specialist Cars in St Neots. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2020-02169c93987a