2021 BMW 3 Series 2.0 320i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320i M Sport Auto 4WD Euro 6 4dr (181 bhp)
• Year: 2021
• Mileage: 49,247 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 49,247 miles, around 5,900 fewer miles than is typical for its age. Priced at £19,890, it is advertised £1,220 below the AskCar estimate of £21,110. The AskCar estimate uses UK dealer asking prices, including 6,902 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 5 days ago, the asking price has dropped by £450. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Big Motoring World Blue Bell Hill in Chatham. 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: £1,220 (5%) under the AskCar estimate of £21,110.

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

AskCar first saw this 2021 BMW 3 Series advertised 5 days ago. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 433 of the 918 first advertised between 10 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 1 November 2026 at £20,340. Its asking price is now £19,890, £450 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 1 November 2026: £20,340
• 3 November 2026: £20,390
• 4 November 2026: £19,950
• 6 November 2026: £19,890

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 5 May 2027.

It has had 3 MOTs. The latest, on 29 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,644 miles, which matches the advertised 49,247 miles.

Advertised mileage is about 5,900 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

143 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £25,975, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 49,000 miles. Price: £21,995, £2,105 more than this car. Dealer: Q Performance Ltd / My1stcar.org in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-97b739a85872
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 48,050 miles. Price: £22,991, £3,101 more than this car. Dealer: Your Next Car in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-97bca1b56462
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 50,512 miles. Price: £19,495, £395 less than this car. Dealer: Group 1 Hailsham BMW in Hailsham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-4dd71b613bfd

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, 10 miles from this car. Mileage: 65,897 miles. Price: £17,475, £2,415 less than this car. Dealer: PCBS Sales in Tonbridge. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-04afec511e7f