2021 BMW 3 Series 2.0 318d MHT M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 318d MHT M Sport Auto RWD Euro 6 4dr Step (147 bhp)
• Year: 2021
• Mileage: 37,757 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 147 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 121 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 37,757 miles, this 2021 BMW 3 Series M Sport has covered about 17,200 fewer miles than other 2021 BMW 3 Series cars. Its asking price of £20,998 is £437 above the AskCar estimate of £20,561. To work out the AskCar estimate, we analyse UK dealer adverts for 6,742 BMW 3 Series cars across different ages and specifications. We first recorded this car for sale 12 days ago. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Glasgow Hamilton Road Peugeot Leapmotor, based in Glasgow. 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: £437 (2%) over the AskCar estimate of £20,561.

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 12 days.

Price history

AskCar first saw this advert on 21 October 2026 at £20,998. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 19 October 2027.

It has had 4 MOTs. The latest, on 20 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 37,767 miles, which matches the advertised 37,757 miles.

Advertised mileage is about 17,200 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, blue. Mileage: 37,996 miles. Price: £22,495, £1,497 more 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
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 36,844 miles. Price: £23,590, £2,592 more than this car. Dealer: Marshall BMW Grimsby in Grimsby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bcef8fef470f
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 36,233 miles. Price: £20,995, the same price as this car. Dealer: TF Car Centre in Euxton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dbfa2cd553ed