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: 56,000 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 56,000 miles. Priced at £20,000, it is advertised £1,253 below the AskCar estimate of £21,253. 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 first saw this car advertised 162 days ago. Its asking price has since fallen by £1,500. The government's MOT record matches its advertised mileage. You can find this car at Praters in Leighton Buzzard. 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: £1,253 (5%) under the AskCar estimate of £21,253.

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 162 days.

Price history

AskCar first saw this advert on 28 May 2026 at £21,500. Its asking price is now £20,000, £1,500 less. The latest price cut was seen on 21 September 2026.

Price changes recorded:

• 29 May 2026: £21,500
• 9 August 2026: £21,000
• 29 August 2026: £19,950
• 21 September 2026: £19,500
• 28 October 2026: £20,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 26 January 2027.

It has had one MOT, on 27 January 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 54,209 miles, which matches the advertised 56,000 miles.

Advertised mileage is about 900 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: 55,541 miles. Price: £20,560, £560 more than this car. Dealer: Vehicle Select in Bolton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-23eb7030c018
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 57,347 miles. Price: £21,000, £1,000 more than this car. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2dd0aa390260
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 54,000 miles. Price: £20,975, £975 more than this car. Dealer: Players Cars in Leeds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5d9741ee9737

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black, 7 miles from this car. Mileage: 89,000 miles. Price: £16,389, £3,611 less than this car. Dealer: The Car Guys in Dunstable. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9d378a0665af