2021 BMW 3 Series 2.0 320d MHT M Sport

Price: £19,990. Good value: £2,385 (10%) under the AskCar estimate of £22,375, 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: 47,200 miles
  • Fuel: Diesel, mild hybrid
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Grey
  • CO2: 129 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

With 47,200 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 7,600 fewer miles than a typical 2021 BMW 3 Series. Its asking price of £19,990 is £2,385 below the AskCar estimate of £22,375. The AskCar estimate uses 6,897 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 35 days. Its advertised mileage matches the government's MOT record. The seller is S James Prestige, based in Stamford. 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: £2,385 (10%) under the AskCar estimate of £22,375.

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 35 days.

Price history

AskCar first saw this advert on 1 October 2026 at £19,990. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 30 September 2027.

It has had 4 MOTs. The latest, on 1 October 2026, passed.

Advisories at the latest test: offside front tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 47,343 miles, which matches the advertised 47,200 miles.

Advertised mileage is about 7,600 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, £2,505 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: 47,618 miles. Price: £21,998, £2,008 more than this car. Dealer: Arnold Clark Shiremoor Motorstore / MG / BYD / Vanstore in Shiremoor. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bafbf244cf9f
  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 47,896 miles. Price: £21,990, £2,000 more than this car. Dealer: Haywards Automotive in Canvey Island. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-131e162c038b
  • The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey, under a mile from this car. Mileage: 48,500 miles. Price: £21,790, £1,800 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-02552e2d4180

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.