2021 BMW M3 3.0 BiTurbo Competition

Price: £78,999. Above the going rate: £14,454 (22%) over the AskCar estimate of £64,545, our expected asking price for this car from its model, age, mileage and specification, drawing on 756 priced BMW M3 adverts on AskCar as of 2 November 2026.

AskCar lists 811 used BMW M3 from 475 UK dealerships, as of 2 November 2026.

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: 11,000 miles
  • Fuel: Petrol
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 3.0 litres, 503 bhp
  • Gearbox: Automatic (Steptronic)
  • Drive: Four-wheel drive
  • Colour: Yellow
  • CO2: 229 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW M3 Competition is advertised with 11,000 miles, approximately 15,900 below the typical mileage for its age. Its asking price of £78,999 is £14,454 above the AskCar estimate of £64,545. The AskCar estimate uses UK dealer asking prices, including 756 BMW M3 adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 158 days. The seller is 51 X, based 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: £14,454 (22%) over the AskCar estimate of £64,545.

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 £78,999. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 15,900 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 £77,450, as of 2 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 9,562 miles. Price: £59,995, £19,004 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, grey. Mileage: 7,300 miles. Price: £74,500, £4,499 less than this car. Dealer: 51 X in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-67aa8fa934e1
  • 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 15,000 miles. Price: £52,700, £26,299 less than this car. Dealer: Hitchfields in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-067f2fae6c1c

Browse all BMW M3 cars for sale · 2021 BMW M3 price guide

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Photos

24 photos of this car are on its AskCar page.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.