2021 BMW 3 Series 2.0 320i M Sport

Price: £22,495. Fair price: £185 (under 1%) under the AskCar estimate of £22,680, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,897 priced BMW 3 Series adverts on AskCar as of 5 November 2026.

AskCar lists 7,194 used BMW 3 Series from 2,714 UK dealerships, as of 5 November 2026.

Overview

  • Make: BMW
  • Model: 3 Series
  • Trim: M Sport
  • Version: 2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)
  • Year: 2021
  • Mileage: 29,000 miles
  • Fuel: Petrol
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.0 litres, 181 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: White
  • CO2: 146 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 29,000 miles, around 25,800 fewer miles than is typical for its age. The AskCar estimate for this car is £22,680. It is priced at £22,495, which is £185 below that estimate. The AskCar estimate draws on 6,897 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 84 days ago. Its asking price has since fallen by £1,200. The government's MOT record matches its advertised mileage. You can find this car at Auto Bazaa in Enfield. 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: £185 (under 1%) under the AskCar estimate of £22,680.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 84 days.

Price history

AskCar first saw this advert on 13 August 2026 at £23,695. Its asking price is now £22,495, £1,200 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

  • 13 August 2026: £23,695
  • 20 August 2026: £23,495
  • 5 October 2026: £22,995
  • 5 November 2026: £22,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 28 July 2027.

It has had 3 MOTs. The latest, on 20 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 27,919 miles, which matches the advertised 29,000 miles.

Advertised mileage is about 25,800 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

146 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £26,950, as of 5 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 29,000 miles. Price: £23,995, £1,500 more than this car. Dealer: Goldstone Cars in Kempston. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8df7528481e4
  • 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,806 miles. Price: £21,488, £1,007 less than this car. Dealer: CarSupermarket.com Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2ef6031a7abe
  • 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,713 miles. Price: £20,698, £1,797 less than this car. Dealer: CarSupermarket.com Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-4f509b3d5560
  • The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, under a mile from this car. Mileage: 56,900 miles. Price: £18,995, £3,500 less than this car. Dealer: Auto Bazaa in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7a52bb8f8445

Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide

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Photos

5 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.