2021 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: 2021
• Mileage: 30,200 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 30,200 miles on the clock, this 2021 BMW X3 M Competition has done roughly 3,800 fewer miles than a typical 2021 BMW X3 M. The dealer is asking £42,990, which is £5,998 below the AskCar estimate of £48,988. To work out the AskCar estimate, we analyse UK dealer adverts for 130 BMW X3 M cars across different ages and specifications. Since we first spotted the advert 83 days ago, the asking price has dropped by £11,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Park Road Garage in Bedford. 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: £5,998 (12%) under the AskCar estimate of £48,988.

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 2021 BMW X3 M with the 3.0 petrol engine is typically advertised at £46,700: the median of the 24 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW X3 M has been on sale for at least 83 days.

Price history

AskCar first saw this advert on 14 August 2026 at £53,990. Its asking price is now £42,990, £11,000 less. The latest price cut was seen on 20 September 2026.

Price changes recorded:

• 14 August 2026: £53,990
• 17 August 2026: £49,990
• 22 August 2026: £47,990
• 5 September 2026: £44,990
• 20 September 2026: £42,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 1 July 2027.

It has had one MOT, on 2 July 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 30,171 miles, which matches the advertised 30,200 miles.

Advertised mileage is about 3,800 miles lower than the median mileage of a 2021 BMW X3 M on AskCar.

Similar cars

20 other 2021 BMW X3 M Competition 3.0 petrol automatic SUVs are for sale at UK dealers, from £39,995 to £54,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 28,563 miles. Price: £52,000, £9,010 more than this car. Dealer: Seaton Car Sales in Hartlepool. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-d6ecdc0aca9e
• 2021 BMW X3 M Competition, 3.0 petrol SUV, blue. Mileage: 27,651 miles. Price: £47,399, £4,409 more than this car. Dealer: Prestige Car Supermarket in York. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-c990f786ac52
• 2021 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 33,500 miles. Price: £46,495, £3,505 more than this car. Dealer: Sharman Group in Manchester. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-f452838e01c7

• The nearest: 2021 BMW X3 M Competition, 3.0 petrol SUV, black, 2 miles from this car. Mileage: 34,000 miles. Price: £42,990, the same price as this car. Dealer: Bedford Car Centres in Bedford. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-a067b02e33d5