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: 23,225 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Colour: Red
• CO2: 231 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition has covered 23,225 miles, around 3,700 fewer miles than is typical for its age. Its asking price of £56,990 is £1,588 above the AskCar estimate of £55,402. The AskCar estimate draws on 756 BMW M3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 70 days ago, and its asking price has since fallen by £1,000. Its advertised mileage matches the government's MOT record. The seller is Sycamore BMW, based in Peterborough. 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: £1,588 (2%) over the AskCar estimate of £55,402.

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 70 days.

Price history

AskCar first saw this advert on 24 August 2026 at £57,990. Its asking price is now £56,990, £1,000 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 24 August 2026: £57,990
• 29 October 2026: £56,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 June 2027.

It has had 3 MOTs. The latest, on 25 June 2026, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge; nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 23,292 miles, which matches the advertised 23,225 miles.

Advertised mileage is about 3,700 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, grey. Mileage: 23,000 miles. Price: £52,995, £3,995 less than this car. Dealer: The Car Agents in Hitchin. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-8e42f43419fe
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 22,000 miles. Price: £44,995, £11,995 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, grey. Mileage: 24,535 miles. Price: £54,295, £2,695 less than this car. Dealer: MotorClass Premium Vehicles in Wigan. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-4855976b59f3

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, grey, 35 miles from this car. Mileage: 26,926 miles. Price: £55,999, £991 less than this car. Dealer: Sandles Cars in King's Lynn. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-1cf1688899dc