2021 BMW M3 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 BiTurbo Competition Steptronic Euro 6 (s/s) 4dr (503 bhp)
• Year: 2021
• Mileage: 49,274 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Colour: Blue
• CO2: 231 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition has covered 49,274 miles, around 22,300 more miles than is typical for its age. The AskCar estimate for this car is £47,751. It is priced at £49,995, which is £2,244 above that estimate. The AskCar estimate uses UK dealer asking prices, including 756 BMW M3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 55 days ago, the asking price has dropped by £2,395. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Silsoe Prestige Motors in Bedford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,244 (4%) over the AskCar estimate of £47,751.

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 756 priced BMW M3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 BMW M3 with the 3.0 petrol engine is typically advertised at £53,500: the median of the 42 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 BMW M3 has been on sale for at least 55 days.

Price history

AskCar first saw this advert on 8 September 2026 at £52,390. Its asking price is now £49,995, £2,395 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 8 September 2026: £52,390
• 29 September 2026: £51,995
• 23 October 2026: £49,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 2 July 2027.

It has had 3 MOTs. The latest, on 15 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 46,914 miles, which matches the advertised 49,274 miles.

Advertised mileage is about 22,300 miles higher than the median mileage of a 2021 BMW M3 on AskCar.

Similar cars

37 other 2021 BMW M3 Competition 3.0 petrol automatic saloons are for sale at UK dealers, from £42,989 to £78,999, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 48,000 miles. Price: £49,985, the same price as this car. Dealer: Brooklands Motor Centre in Leeds. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-98e65ff29301
• 2021 BMW M3 Competition, 3.0 petrol saloon, green. Mileage: 47,786 miles. Price: £47,999, £1,996 less than this car. Dealer: Halliwell Jones Wilmslow BMW in Wilmslow. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-8c70031d7930
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 47,000 miles. Price: £47,990, £2,005 less than this car. Dealer: Vogue Motor Company in Bolton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-4b2b85614bc6

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, grey, 7 miles from this car. Mileage: 23,000 miles. Price: £52,995, £3,000 more than this car. Dealer: The Car Agents in Hitchin. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-8e42f43419fe