2021 BMW M3 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 BiTurbo Competition Steptronic 4WD Euro 6 (s/s) 4dr M (503 bhp)
• Year: 2021
• Mileage: 51,175 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 229 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition is advertised with 51,175 miles, approximately 24,200 above the typical mileage for its age. Its asking price of £48,990 is £2,331 below the AskCar estimate of £51,321. To work out the AskCar estimate, we analyse UK dealer adverts for 744 BMW M3 cars across different ages and specifications. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. It is for sale at Monaco Motorsports in Bolton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,331 (4%) under the AskCar estimate of £51,321.

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 744 priced BMW M3 adverts across different ages and specifications, as of 7 November 2026.

A 2021 BMW M3 with the 3.0 petrol engine is typically advertised at £53,500: the median of the 44 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2021 BMW M3 advertised today.

Price history

AskCar first saw this advert on 7 November 2026 at £48,990. 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 7 November 2026: valid until 21 October 2027.

It has had 3 MOTs. The latest, on 22 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 50,159 miles, which matches the advertised 51,175 miles.

Advertised mileage is about 24,200 miles higher than the median mileage of a 2021 BMW M3 on AskCar.

Similar cars

39 other 2021 BMW M3 Competition 3.0 petrol automatic saloons are for sale at UK dealers, from £42,989 to £78,999, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW M3 Competition, 3.0 petrol saloon, red. Mileage: 52,400 miles. Price: £48,995, the same price as this car. Dealer: Yorkshire Vehicle Solutions in York. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-43542f865fdd
• 2021 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 49,274 miles. Price: £49,995, £1,005 more than this car. Dealer: Silsoe Prestige Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-c5b629d2ac64
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 48,000 miles. Price: £49,685, £695 more than this car. Dealer: Brooklands Motor Centre in Leeds. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-98e65ff29301

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, grey, under a mile from this car. Mileage: 47,000 miles. Price: £47,990, £1,000 less than this car. Dealer: Vogue Motor Company in Bolton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-4b2b85614bc6