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 (s/s) 4dr (187 bhp)
• Year: 2021
• Mileage: 36,844 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 138 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 36,844 miles, this 2021 BMW 3 Series M Sport has covered about 18,100 fewer miles than other 2021 BMW 3 Series cars. The AskCar estimate for this car is £24,140. It is priced at £23,590, which is £550 below that estimate. The AskCar estimate draws on 6,742 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 34 days ago. Its asking price has since fallen by £1,310. The latest recorded MOT expiry date is 8 October 2026, which has passed. Confirm its status with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is Marshall BMW Grimsby, based in Grimsby. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £550 (2%) under the AskCar estimate of £24,140.

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 6,742 priced BMW 3 Series adverts across different ages and specifications, as of 2 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 34 days.

Price history

AskCar first saw this advert on 29 September 2026 at £24,900. Its asking price is now £23,590, £1,310 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 29 September 2026: £24,900
• 2 October 2026: £24,500
• 9 October 2026: £24,200
• 16 October 2026: £23,900
• 23 October 2026: £24,200
• 27 October 2026: £23,900
• 30 October 2026: £23,590

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 8 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 19 September 2025, passed.

Advisories at the latest test: items removed from driver's view prior to test; windscreen damaged but not adversely affecting driver's view; nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 29,704 miles, which matches the advertised 36,844 miles.

Advertised mileage is about 18,100 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

60 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 2 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 36,233 miles. Price: £20,995, £2,595 less than this car. Dealer: TF Car Centre in Euxton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dbfa2cd553ed
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 37,757 miles. Price: £20,998, £2,592 less 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
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 37,996 miles. Price: £22,495, £1,095 less than this car. Dealer: Park's Motor Group Douglas Park BMW Hamilton in Hamilton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-813d0c69ea4e

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue, 50 miles from this car. Mileage: 59,224 miles. Price: £18,150, £5,440 less than this car. Dealer: Evans Halshaw BYD Mansfield in Mansfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7c144ef5e598