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: 32,463 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 224 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 32,463 miles, this 2021 BMW M3 Competition has covered about 5,500 more miles than other 2021 BMW M3 cars. The AskCar estimate for this car is £52,676. It is priced at £50,980, which is £1,696 below that estimate. The AskCar estimate uses 756 UK dealer adverts for the BMW M3, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 9 days ago, the asking price has dropped by £1,010. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Phantom Motor Company in Wigan. 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: £1,696 (3%) under the AskCar estimate of £52,676.

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 9 days.

Price history

AskCar first saw this advert on 24 October 2026 at £51,990. Its asking price is now £50,980, £1,010 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 24 October 2026: £51,990
• 25 October 2026: £50,980

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 26 September 2027.

It failed its MOT on 18 September 2026 (front brake pad(s) less than 1.5 mm thick; nearside rear tyre has ply or cords exposed; offside rear tyre has ply or cords exposed) and passed 5 days later, on 23 September 2026.

Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 32,204 miles, which matches the advertised 32,463 miles.

Advertised mileage is about 5,500 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: 33,201 miles. Price: £52,995, £2,015 more than this car. Dealer: Park's Motor Group Douglas Park BMW Hamilton in Hamilton. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-051f78c4e9bf
• 2021 BMW M3 Competition, 3.0 petrol saloon, green. Mileage: 31,243 miles. Price: £59,990, £9,010 more than this car. Dealer: SS Automotive Cars Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-c1e053d9425b
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 31,000 miles. Price: £56,950, £5,970 more than this car. Dealer: Carbon Collection in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-1afb961dfe4e

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, grey, 4 miles from this car. Mileage: 24,535 miles. Price: £54,295, £3,315 more than this car. Dealer: MotorClass Premium Vehicles in Wigan. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-4855976b59f3