2021 BMW 3 Series 2.0 320d MHT M Sport

Price: £21,995. Fair price: £203 (under 1%) over the AskCar estimate of £21,792, 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: 51,628 miles
  • Fuel: Diesel, mild hybrid
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Blue
  • CO2: 129 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 51,628 miles, this 2021 BMW 3 Series M Sport has covered about 3,200 fewer miles than other 2021 BMW 3 Series cars. Priced at £21,995, it is advertised £203 above the AskCar estimate of £21,792. 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 161 days ago. Its asking price has since fallen by £1,500. Our latest MOT record expired on 25 July 2026. Check the current position with the dealer. Its advertised mileage matches the government's MOT record. The seller is The Plough Garage, based in Farnham. 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: £203 (under 1%) over the AskCar estimate of £21,792.

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 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £23,495. Its asking price is now £21,995, £1,500 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

  • 28 May 2026: £23,495
  • 9 September 2026: £22,995
  • 10 October 2026: £22,495
  • 29 October 2026: £21,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 25 July 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 4 July 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 49,731 miles, which matches the advertised 51,628 miles.

Advertised mileage is about 3,200 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, grey. Mileage: 52,000 miles. Price: £23,495, £1,500 more than this car. Dealer: Shaks Specialist Cars in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2ef2a02e8fb0
  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 54,000 miles. Price: £20,975, £1,020 less than this car. Dealer: Players Cars in Leeds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5d9741ee9737
  • 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 49,000 miles. Price: £20,999, £996 less than this car. Dealer: Lookers Charles Hurst Usedirect Portadown in Portadown. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-461875513191
  • The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black, under a mile from this car. Mileage: 42,721 miles. Price: £21,995, the same price as this car. Dealer: The Plough Garage in Farnham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-fd61162fcce3

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

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Photos

34 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.