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: 22,891 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 22,891 miles, around 31,900 fewer miles than is typical for its age. Its asking price of £23,352 is £15 below the AskCar estimate of £23,367. 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 47 days ago. Its asking price has since fallen by £638. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Halliwell Jones Warrington BMW, based in Warrington. 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: £15 (under 1%) under the AskCar estimate of £23,367.

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 £23,990. Its asking price is now £23,352, £638 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 19 September 2026: £23,990
• 1 October 2026: £23,790
• 17 October 2026: £23,524
• 3 November 2026: £23,352

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 18 August 2027.

It has had 3 MOTs. The latest, on 18 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 22,333 miles, which matches the advertised 22,891 miles.

Advertised mileage is about 31,900 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: 22,600 miles. Price: £25,490, £2,138 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ceeafb001830
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 23,585 miles. Price: £23,999, £647 more than this car. Dealer: Lookers BMW Stoke-On-Trent in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-917a21bb93b7
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 23,623 miles. Price: £23,495, £143 more than this car. Dealer: JCB Group Ashford Orbital Kia in Ashford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7d14ce336447

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, under a mile from this car. Mileage: 83,208 miles. Price: £17,500, £5,852 less than this car. Dealer: Magna Motor Group in Warrington. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-e9ba0f09c72c