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: 34,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 262 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 M Competition is advertised with 34,000 miles on the clock. Priced at £42,990, it is advertised £5,021 below the AskCar estimate of £48,011. The AskCar estimate uses 130 UK dealer adverts for the BMW X3 M, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 77 days ago. Its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Bedford Car Centres, based 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: £5,021 (10%) under the AskCar estimate of £48,011.

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 77 days.

Price history

AskCar first saw this advert on 20 August 2026 at £43,490. Its asking price is now £42,990, £500 less. The latest price cut was seen on 4 September 2026.

Price changes recorded:

• 20 August 2026: £43,490
• 4 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 27 April 2027.

It has had 5 MOTs. The latest, on 28 April 2026, passed.

Advisories at the latest test: nearside front inner road wheel slightly distorted rim.

Mileage at that test: 31,436 miles, which matches the advertised 34,000 miles.

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, grey. Mileage: 34,000 miles. Price: £44,980, £1,990 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-2b0e74df0477
• 2021 BMW X3 M Competition, 3.0 petrol SUV, blue. Mileage: 34,000 miles. Price: £54,500, £11,510 more than this car. Dealer: The Motor Gallery in Havering. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-4cfa5ada62da
• 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: 30,200 miles. Price: £42,990, the same price as this car. Dealer: Park Road Garage in Bedford. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-24a6a8d0e57f