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: 6,407 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 6,407 miles, this 2021 BMW X3 M Competition has covered about 27,600 fewer miles than other 2021 BMW X3 M cars. Its asking price of £48,995 is £6,231 below the AskCar estimate of £55,226. 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 128 days ago, and its asking price has since fallen by £5,000. It is for sale at Auto Torque in Melksham. 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: £6,231 (11%) under the AskCar estimate of £55,226.

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 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 4 November 2026.

Time on sale

This 2021 BMW X3 M has been on sale for at least 128 days.

Price history

AskCar first saw this advert on 29 June 2026 at £53,995. Its asking price is now £48,995, £5,000 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 29 June 2026: £53,995
• 19 July 2026: £52,995
• 1 August 2026: £52,950
• 25 August 2026: £49,995
• 17 October 2026: £49,950
• 25 October 2026: £48,995

Mileage and MOT

Advertised mileage is about 27,600 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 23,000 miles. Price: £45,995, £3,000 less than this car. Dealer: Caledonia Vehicle Solutions in Ayr. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-c899b1adf5c0
• 2021 BMW X3 M Competition, 3.0 petrol SUV, blue. Mileage: 24,000 miles. Price: £52,989, £3,994 more than this car. Dealer: J.L.A.N Motor Group in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-11b67be7742a
• 2021 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 24,800 miles. Price: £54,995, £6,000 more than this car. Dealer: Eminent Motor Group in Oldham. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-9b607e2890bc