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: 27,600 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 27,600 miles, this 2021 BMW 3 Series M Sport has covered about 27,600 fewer miles than other 2021 BMW 3 Series cars. The dealer is asking £22,750, which is £125 below the AskCar estimate of £22,875. 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 28 days ago, the asking price has dropped by £1,240. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Wollaston BMW in Northampton. 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: £125 (under 1%) under the AskCar estimate of £22,875.

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 28 days.

Price history

AskCar first saw this advert on 9 October 2026 at £23,990. Its asking price is now £22,750, £1,240 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 9 October 2026: £23,990
• 20 October 2026: £23,250
• 5 November 2026: £22,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 20 May 2027.

It has had 3 MOTs. The latest, on 11 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 26,340 miles, which matches the advertised 27,600 miles.

Advertised mileage is about 27,600 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: 27,320 miles. Price: £23,495, £745 more than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bd13162028a1
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 28,000 miles. Price: £21,499, £1,251 less than this car. Dealer: H.P.L. Motors - Oldham (Greater Manchester) in Oldham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-b3db77aa2031
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 27,200 miles. Price: £23,990, £1,240 more than this car. Dealer: Harvey Cooper Cars in Ripon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-41b162f94a8c

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, 14 miles from this car. Mileage: 47,482 miles. Price: £24,290, £1,540 more than this car. Dealer: Stratstone BMW Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5e8248396829