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: 28,713 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 28,713 miles, approximately 26,100 below the typical mileage for its age. Priced at £20,698, it is advertised £2,014 below the AskCar estimate of £22,712. The AskCar estimate draws on 6,897 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 47 days ago, and its asking price has since fallen by £1,300. Its advertised mileage matches the government's MOT record. The seller is CarSupermarket.com Barnsley, based in Barnsley. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Good value: £2,014 (8%) under the AskCar estimate of £22,712.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 19 September 2026 at £21,998. Its asking price is now £20,698, £1,300 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 19 September 2026: £21,998
• 24 September 2026: £21,798
• 8 October 2026: £21,498
• 22 October 2026: £21,298
• 28 October 2026: £20,998
• 4 November 2026: £20,698

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 16 September 2027.

It has had 3 MOTs. The latest, on 17 September 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 28,714 miles, which matches the advertised 28,713 miles.

Advertised mileage is about 26,100 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

146 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £26,950, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,640 miles. Price: £20,999, £301 more than this car. Dealer: Hpl Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-b5b9d9a15349
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,806 miles. Price: £21,488, £790 more than this car. Dealer: CarSupermarket.com Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2ef6031a7abe
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,497 miles. Price: £26,950, £6,252 more than this car. Dealer: JS Prestige and Performance in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-b7a66ed56d40