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 RWD Euro 6 (s/s) 4dr (187 bhp)
• Year: 2021
• Mileage: 69,996 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 69,996 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 14,800 more miles than a typical 2021 BMW 3 Series. Priced at £18,890, it is advertised £327 below the AskCar estimate of £19,217. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. The asking price is now £470 lower than when we first recorded the advert 36 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Lookers in Belfast. 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: £327 (1%) under the AskCar estimate of £19,217.

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 36 days.

Price history

AskCar first saw this advert on 1 October 2026 at £19,360. Its asking price is now £18,890, £470 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 1 October 2026: £19,360
• 2 October 2026: £18,949
• 13 October 2026: £18,899
• 31 October 2026: £18,890

Mileage and MOT

It has had 5 MOTs. The latest, on 3 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 63,795 miles, which matches the advertised 69,996 miles.

Advertised mileage is about 14,800 miles higher 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 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 70,000 miles. Price: £19,999, £1,109 more than this car. Dealer: J R R Cars in Leyland. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-233bf6e77e84
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 70,694 miles. Price: £18,998, £108 more than this car. Dealer: Arnold Clark Oldbury Fiat / Motorstore / Jeep / Abarth / BYD in Oldbury. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dfb7529875cd
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 71,089 miles. Price: £19,799, £909 more than this car. Dealer: Wearside Autoparc in Sunderland. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3fc30d62e984

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue, 4 miles from this car. Mileage: 59,813 miles. Price: £20,795, £1,905 more than this car. Dealer: Crawford Clarke Cars in Belfast. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-153a10b2e350