2021 BMW 3 Series 3.0 330d MHT M Sport

Price: £27,495. Fair price: £446 (1%) over the AskCar estimate of £27,049, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,902 priced BMW 3 Series adverts on AskCar as of 6 November 2026.

AskCar lists 7,204 used BMW 3 Series from 2,726 UK dealerships, as of 6 November 2026.

Overview

  • Make: BMW
  • Model: 3 Series
  • Trim: M Sport
  • Version: 3.0 330d MHT M Sport Auto RWD Euro 6 (s/s) 5dr Touring (282 bhp)
  • Year: 2021
  • Mileage: 31,935 miles
  • Fuel: Diesel, mild hybrid
  • Body: Estate, 5 doors, 5 seats
  • Engine: 3.0 litres, 282 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Black
  • CO2: 142 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 31,935 miles, this 2021 BMW 3 Series M Sport has covered about 23,200 fewer miles than other 2021 BMW 3 Series cars. Its asking price of £27,495 is £446 above the AskCar estimate of £27,049. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 162 days ago, the asking price has dropped by £4,500. Our latest MOT record expired on 30 March 2026. Check the current position with the dealer. The government's MOT record matches its advertised mileage. It is for sale at Simpson Motors in Dunfermline. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £446 (1%) over the AskCar estimate of £27,049.

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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.

A 2021 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,500: the median of the 146 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 162 days.

Price history

AskCar first saw this advert on 28 May 2026 at £31,995. Its asking price is now £27,495, £4,500 less. The latest price cut was seen on 18 September 2026.

Price changes recorded:

  • 29 May 2026: £31,995
  • 9 June 2026: £30,995
  • 14 July 2026: £29,995
  • 18 September 2026: £27,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 30 March 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 28 March 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 25,517 miles, which matches the advertised 31,935 miles.

Advertised mileage is about 23,200 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

7 other 2021 BMW 3 Series M Sport 3.0 diesel automatic estates are for sale at UK dealers, from £18,700 to £28,890, as of 6 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 3 Series M Sport, 3.0 diesel estate, white. Mileage: 27,127 miles. Price: £28,890, £1,395 more than this car. Dealer: Stratstone Derby BMW in Derby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-de5f2dfe675d
  • 2021 BMW 3 Series M Sport, 3.0 diesel estate, white. Mileage: 44,238 miles. Price: £25,799, £1,696 less than this car. Dealer: Williams Bolton Bmw in Bolton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5656f6fa2a65
  • 2021 BMW 3 Series M Sport, 3.0 diesel estate, black. Mileage: 51,535 miles. Price: £23,900, £3,595 less than this car. Dealer: Sytner Select Nottingham in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c68d85eabdc6
  • The nearest: 2021 BMW 3 Series M Sport, 3.0 diesel estate, black, 142 miles from this car. Mileage: 56,000 miles. Price: £22,950, £4,545 less than this car. Dealer: Charles Hurst Usedirect Portadown in Belfast. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-1807564595f5

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

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Photos

52 photos of this car are on its AskCar page.

As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.