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 RWD Euro 6 (s/s) 4dr (181 bhp)
• Year: 2021
• Mileage: 47,237 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 47,237 miles, this 2021 BMW 3 Series M Sport has covered about 7,900 fewer miles than other 2021 BMW 3 Series cars. Priced at £20,498, it is advertised £88 above the AskCar estimate of £20,410. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. Since we first spotted the advert 31 days ago, the asking price has dropped by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Liverpool Motorstore / MG / Chery, based in Liverpool. 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: £88 (under 1%) over the AskCar estimate of £20,410.

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 31 days.

Price history

AskCar first saw this advert on 6 October 2026 at £20,998. Its asking price is now £20,498, £500 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 6 October 2026: £20,998
• 3 November 2026: £20,498

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 14 December 2026.

It has had 4 MOTs. The latest, on 6 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 47,243 miles, which matches the advertised 47,237 miles.

Advertised mileage is about 7,900 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, white. Mileage: 47,482 miles. Price: £24,290, £3,792 more than this car. Dealer: Stratstone BMW Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5e8248396829
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 46,530 miles. Price: £19,590, £908 less than this car. Dealer: Evans Halshaw Omoda Jaecoo Hull in Hessle. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-caf5c8652167
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 48,050 miles. Price: £22,991, £2,493 more than this car. Dealer: Your Next Car in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-97bca1b56462

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black, 3 miles from this car. Mileage: 72,568 miles. Price: £16,195, £4,303 less than this car. Dealer: Switch Car Group in Liverpool. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2e126f6e3670