2021 BMW M3 3.0 BiTurbo Competition

Overview

• Make: BMW
• Model: M3
• Trim: Competition
• Version: 3.0 BiTurbo Competition Steptronic RWD Euro 6 (s/s) 4dr (503 bhp)
• Year: 2021
• Mileage: 47,786 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Green
• CO2: 232 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition is advertised with 47,786 miles, approximately 20,900 above the typical mileage for its age. The dealer is asking £47,999, which is £66 below the AskCar estimate of £48,065. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. It first appeared in our advert records 4 days ago. Its advertised mileage matches the government's MOT record. The seller is Halliwell Jones Wilmslow BMW, based in Wilmslow. 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: £66 (under 1%) under the AskCar estimate of £48,065.

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

AskCar first saw this 2021 BMW M3 advertised 4 days ago.

Price history

AskCar first saw this advert on 29 October 2026 at £47,999. 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 2 November 2026: valid until 17 May 2027.

It failed its MOT on 12 May 2026 (rear tyre tread depth below requirements of 1.6mm both) and passed 6 days later, on 18 May 2026.

Advisories at the latest test: rear brake pad(s) wearing thin.

Mileage at that test: 41,080 miles, which matches the advertised 47,786 miles.

Advertised mileage is about 20,900 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, £1,986 more than 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, grey. Mileage: 47,000 miles. Price: £47,990, the same price as this car. Dealer: Vogue Motor Company in Bolton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-4b2b85614bc6
• 2021 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 49,274 miles. Price: £49,995, £1,996 more than this car. Dealer: Silsoe Prestige Motors in Luton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-c5b629d2ac64

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, blue, 7 miles from this car. Mileage: 5,621 miles. Price: £65,249, £17,250 more than this car. Dealer: 101 Specialist Cars in Manchester. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-cfa9bc773dac