2021 BMW 3 Series 2.0 M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 MHT M Sport Auto Euro 6 5dr
• Year: 2021
• Mileage: 49,135 miles
• Fuel: Diesel, mild hybrid
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Black
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 49,135 miles, approximately 5,700 below the typical mileage for its age. The AskCar estimate for this car is £22,864. It is priced at £21,990, which is £874 below that estimate. The AskCar estimate uses UK dealer asking prices, including 6,897 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 89 days ago, the asking price has dropped by £2,000. The government's MOT record matches its advertised mileage. You can find this car at Your Best Car (Bucks) in Marlow. 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: £874 (3%) under the AskCar estimate of £22,864.

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 89 days.

Price history

AskCar first saw this advert on 8 August 2026 at £23,990. Its asking price is now £21,990, £2,000 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 8 August 2026: £23,990
• 11 August 2026: £24,280
• 6 September 2026: £23,990
• 8 September 2026: £23,777
• 12 October 2026: £22,990
• 21 October 2026: £22,777
• 26 October 2026: £22,740
• 27 October 2026: £22,490
• 3 November 2026: £21,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 14 May 2027.

It has had 4 MOTs. The latest, on 8 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 45,975 miles, which matches the advertised 49,135 miles.

Advertised mileage is about 5,700 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

33 other 2021 BMW 3 Series M Sport 2.0 diesel automatic estates are for sale at UK dealers, from £13,750 to £29,950, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel estate, grey. Mileage: 48,197 miles. Price: £23,499, £1,509 more than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a0d90117e984
• 2021 BMW 3 Series M Sport, 2.0 diesel estate, grey. Mileage: 47,910 miles. Price: £25,350, £3,360 more than this car. Dealer: Sytner Sheffield BMW in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8d676d2bc383
• 2021 BMW 3 Series M Sport, 2.0 diesel estate, black. Mileage: 47,663 miles. Price: £17,999, £3,991 less than this car. Dealer: Berkeley Motor Group in Greenford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-87938ae16550

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel estate, grey, 5 miles from this car. Mileage: 88,801 miles. Price: £17,995, £3,995 less than this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-efd0cd0fe603