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: 43,979 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 is advertised with 43,979 miles, approximately 10,000 above the typical mileage for its age. Priced at £42,060, it is advertised £3,477 below the AskCar estimate of £45,537. 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 68 days ago, the asking price has dropped by £930. Its advertised mileage matches the government's MOT record. The seller is Evans Halshaw Ford Coatbridge, based in Coatbridge. 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: £3,477 (7%) under the AskCar estimate of £45,537.

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 68 days.

Price history

AskCar first saw this advert on 29 August 2026 at £42,990. Its asking price is now £42,060, £930 less. The latest price cut was seen on 29 September 2026.

Price changes recorded:

• 29 August 2026: £42,990
• 2 September 2026: £42,510
• 16 September 2026: £42,450
• 29 September 2026: £42,060

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 6 April 2027.

It has had 5 MOTs. The latest, on 27 March 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 39,081 miles, which matches the advertised 43,979 miles.

Advertised mileage is about 10,000 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: 47,113 miles. Price: £47,600, £5,540 more than this car. Dealer: John Clark BMW Aberdeen in Aberdeen. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-1b3cbf678608
• 2021 BMW X3 M Competition, 3.0 petrol SUV, grey. Mileage: 37,633 miles. Price: £44,491, £2,431 more than this car. Dealer: David James in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-3c969078d813
• 2021 BMW X3 M Competition, 3.0 petrol SUV, black. Mileage: 52,000 miles. Price: £52,488, £10,428 more than this car. Dealer: Auto Group in Wembley. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-b7782500a611

• The nearest: 2021 BMW X3 M Competition, 3.0 petrol SUV, grey, 36 miles from this car. Mileage: 23,000 miles. Price: £45,995, £3,935 more than this car. Dealer: Caledonia Vehicle Solutions in Ayr. AskCar page: https://askcar.co.uk/car/bmw-x3-m-2021-c899b1adf5c0