2021 BMW 3 Series 2.0 320d M Sport
Price: £24,990. Above the going rate: £2,453 (10%) over the AskCar estimate of £22,537, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,886 priced BMW 3 Series adverts on AskCar as of 7 November 2026.
AskCar lists 7,202 used BMW 3 Series from 2,724 UK dealerships, as of 7 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Trim: M Sport
- Version: 2.0 320d M Sport Auto RWD Euro 6 4dr (187 bhp)
- Year: 2021
- Mileage: 44,307 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 187 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Black
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 3 Series M Sport is advertised with 44,307 miles, approximately 10,800 below the typical mileage for its age. Priced at £24,990, it is advertised £2,453 above the AskCar estimate of £22,537. The AskCar estimate uses 6,886 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 85 days ago. Its asking price has since fallen by £260. You can find this car at Sycamore BMW in Peterborough. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Above the going rate: £2,453 (10%) over the AskCar estimate of £22,537.
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 7 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 85 days.
Price history
AskCar first saw this advert on 14 August 2026 at £25,250. Its asking price is now £24,990, £260 less. The latest price cut was seen on 22 October 2026.
Price changes recorded:
- 14 August 2026: £25,250
- 22 October 2026: £24,990
Mileage and MOT
Advertised mileage is about 10,800 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
Similar cars
59 other 2021 BMW 3 Series M Sport 2.0 diesel automatic saloons are for sale at UK dealers, from £12,700 to £25,495, as of 7 November 2026.
The 3 closest to this car in mileage:
- 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 45,447 miles. Price: £21,990, £3,000 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8d014b8edadb
- 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 42,850 miles. Price: £25,449, £459 more than this car. Dealer: Paragon Cars London in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2b043aa67e19
- 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 42,721 miles. Price: £21,995, £2,995 less than this car. Dealer: The Plough Garage in Farnham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-fd61162fcce3
- The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 7 miles from this car. Mileage: 102,000 miles. Price: £16,795, £8,195 less than this car. Dealer: Car Mart in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-82f2a829ac18
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
More like this
- Used BMW 3 Series M Sport prices
- Used BMW 3 Series for sale under £30,000
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- Used BMW 3 Series for sale near Peterborough
Photos
46 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.