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: 23,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Colour: Grey
• CO2: 232 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 23,000 miles, this 2021 BMW M3 Competition has covered about 3,000 fewer miles than other 2021 BMW M3 cars. Priced at £52,995, it is advertised £2,325 below the AskCar estimate of £55,320. The AskCar estimate uses UK dealer asking prices, including 752 BMW M3 adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 69 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at The Car Agents in Hitchin. 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

Fair price: £2,325 (4%) under the AskCar estimate of £55,320.

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 752 priced BMW M3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 BMW M3 with the 3.0 petrol engine is typically advertised at £54,000: the median of the 43 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW M3 has been on sale for at least 69 days.

Price history

AskCar first saw this advert on 27 August 2026 at £52,995. 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 4 November 2026: valid until 28 May 2027.

It has had 4 MOTs. The latest, on 26 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 23,304 miles, which matches the advertised 23,000 miles.

Advertised mileage is about 3,000 miles lower than the median mileage of a 2021 BMW M3 on AskCar.

Similar cars

38 other 2021 BMW M3 Competition 3.0 petrol automatic saloons are for sale at UK dealers, from £42,989 to £78,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW M3 Competition, 3.0 petrol saloon, red. Mileage: 23,225 miles. Price: £56,990, £3,995 more than this car. Dealer: Sycamore BMW in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-a17b3b35dcb3
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 22,000 miles. Price: £44,995, £8,000 less than this car. Dealer: Hiline Motors in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-f55b34d3700e
• 2021 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 21,784 miles. Price: £49,995, £3,000 less than this car. Dealer: Prestige and Performance Cars Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-63075a385b76

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, blue, 7 miles from this car. Mileage: 49,274 miles. Price: £49,995, £3,000 less than this car. Dealer: Silsoe Prestige Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-c5b629d2ac64