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: 28,640 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 28,640 miles, approximately 26,500 below the typical mileage for its age. Its asking price of £20,999 is £1,761 below the AskCar estimate of £22,760. 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 157 days ago, the asking price has dropped by £1,500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Hpl Barnsley, based in Barnsley. 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: £1,761 (7%) under the AskCar estimate of £22,760.

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 157 days.

Price history

AskCar first saw this advert on 2 June 2026 at £22,499. Its asking price is now £20,999, £1,500 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 2 June 2026: £22,499
• 31 July 2026: £23,599
• 2 August 2026: £21,199
• 3 August 2026: £20,999
• 4 August 2026: £22,499
• 7 October 2026: £21,999
• 28 October 2026: £20,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 29 November 2026.

It has had 2 MOTs. The latest, on 14 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 27,011 miles, which matches the advertised 28,640 miles.

Advertised mileage is about 26,500 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: 28,713 miles. Price: £20,698, £301 less than this car. Dealer: CarSupermarket.com Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-4f509b3d5560
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,497 miles. Price: £25,950, £4,951 more than this car. Dealer: JS Prestige and Performance in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-b7a66ed56d40
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,806 miles. Price: £21,488, £489 more than this car. Dealer: CarSupermarket.com Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2ef6031a7abe