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: 70,694 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 70,694 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 15,500 more miles than a typical 2021 BMW 3 Series. Its asking price of £18,998 is £183 below the AskCar estimate of £19,181. The AskCar estimate uses 6,862 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 42 days ago, the asking price has dropped by £500. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Oldbury Fiat / Motorstore / Jeep / Abarth / BYD, based in Oldbury. 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: £183 (under 1%) under the AskCar estimate of £19,181.

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 42 days.

Price history

AskCar first saw this advert on 23 September 2026 at £19,498. Its asking price is now £18,998, £500 less. The latest price cut was seen on 18 October 2026.

Price changes recorded:

• 23 September 2026: £19,498
• 18 October 2026: £18,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 15 September 2027.

It has had 4 MOTs. The latest, on 16 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 70,646 miles, which matches the advertised 70,694 miles.

Advertised mileage is about 15,500 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 £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, white. Mileage: 71,089 miles. Price: £19,799, £801 more than this car. Dealer: Wearside Autoparc in Sunderland. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3fc30d62e984
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 70,000 miles. Price: £19,999, £1,001 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: 69,996 miles. Price: £18,890, £108 less than this car. Dealer: Lookers in Belfast. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a713dcba75ec

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 6 miles from this car. Mileage: 99,850 miles. Price: £15,995, £3,003 less than this car. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3f057f0f212d