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: 55,541 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 BMW 3 Series M Sport is 55,541 miles. Priced at £20,560, it is advertised £751 below the AskCar estimate of £21,311. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 14 days. Its advertised mileage matches the government's MOT record. It is advertised by Vehicle Select in Bolton. 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: £751 (3%) under the AskCar estimate of £21,311.

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 14 days.

Price history

AskCar first saw this advert on 23 October 2026 at £19,990. Its asking price is now £20,560, £570 more.

Price changes recorded:

• 23 October 2026: £19,990
• 4 November 2026: £20,560

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 17 September 2027.

It has had 4 MOTs. The latest, on 14 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 55,268 miles, which matches the advertised 55,541 miles.

Advertised mileage is about 400 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, blue. Mileage: 56,000 miles. Price: £20,000, £560 less than this car. Dealer: Praters in Leighton Buzzard. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-42a6035914dc
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 54,000 miles. Price: £20,975, £415 more than this car. Dealer: Players Cars in Leeds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5d9741ee9737
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 57,347 miles. Price: £21,000, £440 more than this car. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2dd0aa390260

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black, 8 miles from this car. Mileage: 45,447 miles. Price: £21,990, £1,430 more than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8d014b8edadb