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: 7,300 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

At 7,300 miles, this 2021 BMW M3 Competition has covered about 19,600 fewer miles than other 2021 BMW M3 cars. The dealer is asking £74,500, which is £7,929 above the AskCar estimate of £66,571. To work out the AskCar estimate, we analyse UK dealer adverts for 756 BMW M3 cars across different ages and specifications. We first recorded this car for sale 158 days ago. It is for sale at 51 X in Birmingham. 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

Above the going rate: £7,929 (11%) over the AskCar estimate of £66,571.

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 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £74,500. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 19,600 miles lower 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, blue. Mileage: 5,621 miles. Price: £65,249, £9,251 less than this car. Dealer: 101 Specialist Cars in Manchester. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-cfa9bc773dac
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 9,562 miles. Price: £59,995, £14,505 less than this car. Dealer: Ace Car Sales in Heywood. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-fc128b177620
• 2021 BMW M3 Competition, 3.0 petrol saloon, green. Mileage: 5,000 miles. Price: £77,450, £2,950 more than this car. Dealer: Digbeth Motor Sales in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-306110aa649a

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, yellow, under a mile from this car. Mileage: 11,000 miles. Price: £78,999, £4,499 more than this car. Dealer: 51 X in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-2ca9c7ce4e99