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: 34,456 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

At 34,456 miles, this 2021 BMW M3 Competition has covered about 9,500 more miles than other 2021 BMW M3 cars. The AskCar estimate for this car is £51,939. It is priced at £51,995, which is £56 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 753 BMW M3 cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 158 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Brook Cars Company in Telford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £56 (under 1%) over the AskCar estimate of £51,939.

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 753 priced BMW M3 adverts across different ages and specifications, as of 5 November 2026.

A 2021 BMW M3 with the 3.0 petrol engine is typically advertised at £54,100: the median of the 42 for sale on AskCar, as of 5 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 31 May 2026 at £52,995. Its asking price is now £51,995, £1,000 less. The latest price cut was seen on 3 August 2026.

Price changes recorded:

• 1 June 2026: £52,995
• 3 August 2026: £51,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 10 February 2027.

It has had 4 MOTs. The latest, on 11 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 32,465 miles, which matches the advertised 34,456 miles.

Advertised mileage is about 9,500 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW M3 Competition, 3.0 petrol saloon, white. Mileage: 34,000 miles. Price: £64,995, £13,000 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, grey. Mileage: 35,466 miles. Price: £52,750, £755 more than this car. Dealer: Priddy's Motor Company in Minehead. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-990ad2add846
• 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 33,201 miles. Price: £52,995, £1,000 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

• The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, yellow, under a mile from this car. Mileage: 45,511 miles. Price: £49,800, £2,195 less than this car. Dealer: Brook Cars Company in Telford. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-48eadefc5496