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: 68,468 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

This 2021 BMW 3 Series M Sport has covered 68,468 miles, around 13,300 more miles than is typical for its age. The AskCar estimate for this car is £19,404. It is priced at £18,998, which is £406 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,886 BMW 3 Series cars across different ages and specifications. We first recorded this advert 57 days ago, and its asking price has since fallen by £1,000. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Ayr BYD, based in AYR. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £406 (2%) under the AskCar estimate of £19,404.

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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 7 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 57 days.

Price history

AskCar first saw this advert on 11 September 2026 at £19,998. Its asking price is now £18,998, £1,000 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 11 September 2026: £19,998
• 4 October 2026: £19,498
• 3 November 2026: £18,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 8 September 2027.

It has had 4 MOTs. The latest, on 9 September 2026, passed.

Advisories at the latest test: offside front lower windscreen damaged but not adversely affecting driver's view.

Mileage at that test: 68,485 miles, which matches the advertised 68,468 miles.

Advertised mileage is about 13,300 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 £25,495, as of 7 November 2026.

The 3 closest to this car in mileage:

• 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
• 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: 70,694 miles. Price: £18,998, the same price as 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

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue, 31 miles from this car. Mileage: 37,757 miles. Price: £20,498, £1,500 more than this car. Dealer: Arnold Clark Glasgow Hamilton Road Peugeot Leapmotor in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5b5e12e93fae