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: 33,201 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 503 bhp
• Gearbox: Automatic (Steptronic)
• Colour: Grey
• CO2: 231 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition has covered 33,201 miles, around 6,300 more miles than is typical for its age. The AskCar estimate for this car is £52,567. It is priced at £52,995, which is £428 above that estimate. The AskCar estimate uses UK dealer asking prices, including 756 BMW M3 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 53 days ago. Its asking price has since fallen by £2,000. We checked its advertised mileage against the government's MOT record, and they match. The seller is Park's Motor Group Douglas Park BMW Hamilton, based in Hamilton. 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: £428 (under 1%) over the AskCar estimate of £52,567.

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 53 days.

Price history

AskCar first saw this advert on 10 September 2026 at £54,995. Its asking price is now £52,995, £2,000 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 10 September 2026: £54,995
• 24 October 2026: £52,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 29 April 2027.

It has had 3 MOTs. The latest, on 29 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 32,101 miles, which matches the advertised 33,201 miles.

Advertised mileage is about 6,300 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: 32,463 miles. Price: £50,980, £2,015 less than this car. Dealer: Phantom Motor Company in Hindley Green. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-12d9768d50dd
• 2021 BMW M3 Competition, 3.0 petrol saloon, white. Mileage: 34,000 miles. Price: £64,995, £12,000 more than this car. Dealer: V G Performance Cars in Andover. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-a7a4294ef552
• 2021 BMW M3 Competition, 3.0 petrol saloon, green. Mileage: 34,456 miles. Price: £51,995, £1,000 less than this car. Dealer: Brook Cars Company in Telford. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-f3854ae9d46e

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, grey, 43 miles from this car. Mileage: 20,000 miles. Price: £49,995, £3,000 less than this car. Dealer: S & S Car Sales in Glenrothes. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-296925a4e0d9