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: 26,176 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 26,176 miles, around 28,000 fewer miles than is typical for its age. Its asking price of £21,750 is £1,067 below the AskCar estimate of £22,817. The AskCar estimate uses UK dealer asking prices, including 6,886 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 1 day ago. The government's MOT record matches its advertised mileage. It is advertised by Car Planet Watford in Rickmansworth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 14 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,067 (4%) under the AskCar estimate of £22,817.

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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 14 November 2026.

Time on sale

AskCar first saw this 2021 BMW 3 Series advertised 1 day ago. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 457 of the 981 first advertised between 14 July 2026 and 11 October 2026.

Price history

AskCar first saw this advert on 13 November 2026 at £21,550. Its asking price is now £21,750, £200 more.

Price changes recorded:

• 13 November 2026: £21,550
• 14 November 2026: £21,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 14 November 2026: valid until 22 October 2027.

It has had 5 MOTs. The latest, on 23 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 25,906 miles, which matches the advertised 26,176 miles.

Advertised mileage is about 28,000 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

149 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £13,750 to £27,298, as of 14 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 27,124 miles. Price: £21,956, £206 more than this car. Dealer: Bentley Motor Group in Keighley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8dabd30ca75e
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 27,200 miles. Price: £23,490, £1,740 more than this car. Dealer: Harvey Cooper Cars in Ripon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-41b162f94a8c
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 25,072 miles. Price: £19,727, £2,023 less than this car. Dealer: Carsa Cannock in Cannock. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9c7c6c114f30

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, under a mile from this car. Mileage: 40,135 miles. Price: £19,900, £1,850 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-6fdf11244d00