2021 BMW 3 Series 2.0 320d MHT SE

Price: £15,700. Fair price: £1,302 (7%) under the AskCar estimate of £17,002, 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: SE
  • Version: 2.0 320d MHT SE Auto 4WD Euro 6 (s/s) 4dr (187 bhp)
  • Year: 2021
  • Mileage: 58,900 miles
  • Fuel: Diesel, mild hybrid
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic
  • Drive: Four-wheel drive
  • Colour: White
  • CO2: 130 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series has covered 58,900 miles, around 3,800 more miles than is typical for its age. Its asking price of £15,700 is £1,302 below the AskCar estimate of £17,002. The AskCar estimate uses UK dealer asking prices, including 6,902 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 21 days ago. Its asking price has since fallen by £290. The government's MOT record matches its advertised mileage. It is for sale at K Motors London in New Malden. 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: £1,302 (7%) under the AskCar estimate of £17,002.

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.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 21 days.

Price history

AskCar first saw this advert on 16 October 2026 at £15,990. Its asking price is now £15,700, £290 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

  • 16 October 2026: £15,990
  • 6 November 2026: £15,700

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 14 October 2027.

It has had 5 MOTs. The latest, on 15 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 58,482 miles, which matches the advertised 58,900 miles.

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

Similar cars

5 other 2021 BMW 3 Series SE 2.0 diesel automatic saloons are for sale at UK dealers, from £13,495 to £17,999, as of 6 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 3 Series SE, 2.0 diesel saloon, grey. Mileage: 64,000 miles. Price: £15,740, the same price as this car. Dealer: Wembley Prestige Cars in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7ae1ab745c4a
  • 2021 BMW 3 Series SE, 2.0 diesel saloon, white. Mileage: 69,120 miles. Price: £15,998, £298 more than this car. Dealer: Arnold Clark Wigan Motorstore in Wigan. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-30af0d219360
  • 2021 BMW 3 Series SE, 2.0 diesel saloon, grey. Mileage: 41,407 miles. Price: £17,999, £2,299 more than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-0d94964bd079

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

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Photos

40 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.