2021 BMW 3 Series 2.0 320d MHT M Sport

Price: £21,998. Fair price: £321 (1%) under the AskCar estimate of £22,319, 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 320d MHT M Sport Auto RWD Euro 6 (s/s) 4dr (187 bhp)
  • Year: 2021
  • Mileage: 47,618 miles
  • Fuel: Diesel, mild hybrid
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Black
  • CO2: 129 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 47,618 miles, this 2021 BMW 3 Series M Sport has covered about 7,200 fewer miles than other 2021 BMW 3 Series cars. The AskCar estimate for this car is £22,319. It is priced at £21,998, which is £321 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 recorded this advert 30 days ago, and its asking price has since fallen by £500. Its advertised mileage matches the government's MOT record. It is advertised by Arnold Clark Shiremoor Motorstore / MG / BYD / Vanstore in Newcastle Upon Tyne. 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: £321 (1%) under the AskCar estimate of £22,319.

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 30 days.

Price history

AskCar first saw this advert on 6 October 2026 at £22,498. Its asking price is now £21,998, £500 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

  • 6 October 2026: £22,498
  • 5 November 2026: £21,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 1 October 2027.

It has had 5 MOTs. The latest, on 2 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 47,619 miles, which matches the advertised 47,618 miles.

Advertised mileage is about 7,200 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

59 other 2021 BMW 3 Series M Sport 2.0 diesel automatic saloons are for sale at UK dealers, from £12,700 to £25,995, as of 5 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 47,469 miles. Price: £22,495, £497 more than this car. Dealer: Kaz Executive Travel in Basildon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8eb97b842df9
  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 47,896 miles. Price: £21,990, the same price as this car. Dealer: Haywards Automotive in Canvey Island. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-131e162c038b
  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 48,000 miles. Price: £20,995, £1,003 less than this car. Dealer: Top Tier Autos in Cheadle. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-67de26e40fa9
  • The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 10 miles from this car. Mileage: 71,089 miles. Price: £19,799, £2,199 less than this car. Dealer: Wearside Autoparc in Sunderland. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3fc30d62e984

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

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Photos

20 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.