2021 BMW 3 Series 2.0 320d MHT M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320d MHT M Sport Auto 4WD Euro 6 4dr (187 bhp)
• Year: 2021
• Mileage: 42,850 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 138 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 42,850 miles, approximately 12,300 below the typical mileage for its age. The dealer is asking £25,449, which is £971 above the AskCar estimate of £24,478. To work out the AskCar estimate, we analyse UK dealer adverts for 6,862 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 160 days ago. Its asking price has since fallen by £2,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Paragon Cars London in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £971 (3%) over the AskCar estimate of £24,478.

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 6,862 priced BMW 3 Series adverts across different ages and specifications, as of 4 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £27,449. Its asking price is now £25,449, £2,000 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 29 May 2026: £27,449
• 30 June 2026: £27,249
• 6 August 2026: £26,949
• 30 August 2026: £26,749
• 8 September 2026: £26,449
• 23 September 2026: £26,249
• 30 September 2026: £25,949
• 14 October 2026: £25,749
• 21 October 2026: £25,449

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 12 January 2027.

It failed its MOT on 13 January 2026 (offside rear inner tyre has a lump, caused by separation or partial failure of its structure) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 42,126 miles, which matches the advertised 42,850 miles.

Advertised mileage is about 12,300 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 £13,500 to £25,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 42,721 miles. Price: £22,495, £2,954 less than this car. Dealer: The Plough Garage in Farnham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-fd61162fcce3
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 41,999 miles. Price: £20,989, £4,460 less than this car. Dealer: Essex Prestige in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ca38751a2213
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 44,307 miles. Price: £24,990, £459 less than this car. Dealer: Sycamore BMW in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-acd525e74a91

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 6 miles from this car. Mileage: 131,041 miles. Price: £13,500, £11,949 less than this car. Dealer: Parkside Motors in Edgware. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3166c566ae5a