2021 BMW M3 3.0 BiTurbo Competition

Price: £44,995. Good value: £10,476 (18%) under the AskCar estimate of £55,471, our expected asking price for this car from its model, age, mileage and specification, drawing on 753 priced BMW M3 adverts on AskCar as of 5 November 2026.

AskCar lists 808 used BMW M3 from 469 UK dealerships, as of 5 November 2026.

Overview

  • Make: BMW
  • Model: M3
  • Trim: Competition
  • Version: 3.0 BiTurbo Competition Steptronic RWD Euro 6 (s/s) 4dr (503 bhp)
  • Year: 2021
  • Mileage: 22,000 miles
  • Fuel: Petrol
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 3.0 litres, 503 bhp
  • Gearbox: Automatic (Steptronic)
  • Drive: Rear-wheel drive
  • Colour: Grey
  • Emissions standard: Euro 6, ULEZ compliant

About this car

With 22,000 miles on the clock, this 2021 BMW M3 Competition has done roughly 3,000 fewer miles than a typical 2021 BMW M3. The AskCar estimate for this car is £55,471. It is priced at £44,995, which is £10,476 below that estimate. The AskCar estimate uses UK dealer asking prices, including 753 BMW M3 adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 132 days ago. The seller is Hiline Motors, based in Birmingham. 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

Good value: £10,476 (18%) under the AskCar estimate of £55,471.

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 132 days.

Price history

AskCar first saw this advert on 26 June 2026 at £44,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 3,000 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 5 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 21,784 miles. Price: £49,995, £5,000 more than this car. Dealer: Prestige and Performance Cars Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-63075a385b76
  • 2021 BMW M3 Competition, 3.0 petrol saloon, blue. Mileage: 21,469 miles. Price: £52,000, £7,005 more than this car. Dealer: White Rose Automotive in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-e6d1382f0676
  • 2021 BMW M3 Competition, 3.0 petrol saloon, grey. Mileage: 23,000 miles. Price: £52,995, £8,000 more than this car. Dealer: The Car Agents in Hitchin. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-8e42f43419fe
  • The nearest: 2021 BMW M3 Competition, 3.0 petrol saloon, green, 1 miles from this car. Mileage: 5,000 miles. Price: £77,450, £32,455 more than this car. Dealer: Digbeth Motor Sales in Birmingham. AskCar page: https://askcar.co.uk/car/bmw-m3-2021-306110aa649a

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

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Photos

31 photos of this car are on its AskCar page.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.