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: 28,806 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

At 28,806 miles, this 2021 BMW 3 Series M Sport has covered about 26,000 fewer miles than other 2021 BMW 3 Series cars. Its asking price of £21,488 is £1,213 below the AskCar estimate of £22,701. The AskCar estimate uses UK dealer asking prices, including 6,897 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 34 days ago. Its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. 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

Fair price: £1,213 (5%) under the AskCar estimate of £22,701.

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 34 days.

Price history

AskCar first saw this advert on 2 October 2026 at £21,988. Its asking price is now £21,488, £500 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 2 October 2026: £21,988
• 23 October 2026: £21,488

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 19 September 2027.

It has had 3 MOTs. The latest, on 2 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 28,408 miles, which matches the advertised 28,806 miles.

Advertised mileage is about 26,000 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: 28,713 miles. Price: £20,698, £790 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: 28,640 miles. Price: £20,999, £489 less 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: 29,000 miles. Price: £22,495, £1,007 more than this car. Dealer: Auto Bazaa in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dad18b5273bb