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: 37,633 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 261 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 M Competition has covered 37,633 miles, around 3,600 more miles than is typical for its age. The AskCar estimate for this car is £47,095. It is priced at £44,491, which is £2,604 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 130 BMW X3 M cars across different ages and specifications. We first recorded this car for sale 75 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is David James, based in Newcastle Upon Tyne. 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

Fair price: £2,604 (5%) under the AskCar estimate of £47,095.

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 75 days.

Price history

AskCar first saw this advert on 22 August 2026 at £44,491. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 22 March 2027.

It has had 3 MOTs. The latest, on 3 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 35,346 miles, which matches the advertised 37,633 miles.

Advertised mileage is about 3,600 miles higher 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, grey. Mileage: 35,000 miles. Price: £52,449, £7,958 more than this car. Dealer: A1 Ortos in Oldham. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-06937dc39cc7
• 2021 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 34,000 miles. Price: £42,990, £1,501 less than this car. Dealer: Bedford Car Centres in Bedford. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-a067b02e33d5
• 2021 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 34,000 miles. Price: £44,980, £489 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-2b0e74df0477

• The nearest: 2021 BMW X3 M Competition, 3.0 petrol SUV, black, 5 miles from this car. Mileage: 58,443 miles. Price: £49,995, £5,504 more than this car. Dealer: Money for Motors North East in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-ef8ca367d0e9