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: 31,097 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 has covered 31,097 miles, around 23,700 fewer miles than is typical for its age. Its asking price of £21,298 is £1,124 below the AskCar estimate of £22,422. The AskCar estimate uses 6,897 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 33 days ago, the asking price has dropped by £201. We checked its advertised mileage against the government's MOT record, and they match. The seller is Eastern Western Motor Group Car Deal Warehouse Superstore Newbridge, based in Newbridge. 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: £1,124 (5%) under the AskCar estimate of £22,422.

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 33 days.

Price history

AskCar first saw this advert on 3 October 2026 at £21,499. Its asking price is now £21,298, £201 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 3 October 2026: £21,499
• 31 October 2026: £21,298

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 24 March 2027.

It has had 3 MOTs. The latest, on 12 March 2026, passed.

Advisories at the latest test: under shields fitted.

Mileage at that test: 28,876 miles, which matches the advertised 31,097 miles.

Advertised mileage is about 23,700 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, grey. Mileage: 31,312 miles. Price: £20,949, £349 less than this car. Dealer: Motorpoint Burnley in Burnley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2688e420b9cf
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 31,460 miles. Price: £22,370, £1,072 more than this car. Dealer: Carsa Cannock in Cannock. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8eb9e5386599
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 31,500 miles. Price: £22,399, £1,101 more than this car. Dealer: Lookers BMW Stafford in Stafford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-adfe708c5ca3

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 11 miles from this car. Mileage: 87,011 miles. Price: £16,998, £4,300 less than this car. Dealer: Arnold Clark Edinburgh Seafield Motorstore / Vanstore in Edinburgh. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-85f4dcb1429a