2021 BMW 3 Series 2.0 318i M Sport
Price: £20,999. Good value: £2,046 (8%) under the AskCar estimate of £23,045, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,897 priced BMW 3 Series adverts on AskCar as of 5 November 2026.
AskCar lists 7,194 used BMW 3 Series from 2,714 UK dealerships, as of 5 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Trim: M Sport
- Version: 2.0 318i M Sport Auto RWD Euro 6 (s/s) 5dr Touring (154 bhp)
- Year: 2021
- Mileage: 25,209 miles
- Fuel: Petrol
- Body: Estate, 5 doors, 5 seats
- Engine: 2.0 litres, 154 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Black
- CO2: 153 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 25,209 miles, this 2021 BMW 3 Series M Sport has covered about 29,600 fewer miles than other 2021 BMW 3 Series cars. The dealer is asking £20,999, which is £2,046 below the AskCar estimate of £23,045. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. This car was first seen in our listings data 22 days ago. It is advertised by Fresh Motors in Thetford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Good value: £2,046 (8%) under the AskCar estimate of £23,045.
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 22 days.
Price history
AskCar first saw this advert on 14 October 2026 at £20,999. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 29,600 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
Similar cars
30 other 2021 BMW 3 Series M Sport 2.0 petrol automatic estates are for sale at UK dealers, from £14,495 to £29,990, as of 5 November 2026.
The 3 closest to this car in mileage:
- 2021 BMW 3 Series M Sport, 2.0 petrol estate, white. Mileage: 27,830 miles. Price: £22,895, £1,896 more than this car. Dealer: Motor Range Liverpool in Liverpool. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-999bc345017a
- 2021 BMW 3 Series M Sport, 2.0 petrol estate, blue. Mileage: 27,950 miles. Price: £23,995, £2,996 more than this car. Dealer: Roy Humphrey Vargas in Eye. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bc803017f276
- 2021 BMW 3 Series M Sport, 2.0 petrol estate, white. Mileage: 34,786 miles. Price: £28,498, £7,499 more than this car. Dealer: Arnold Clark Irvine BMW in Irvine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c70510099d1a
- The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol estate, grey, under a mile from this car. Mileage: 49,850 miles. Price: £19,799, £1,200 less than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-af93421b924f
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
More like this
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- Used BMW 3 Series for sale under £30,000
- Used automatic BMW 3 Series for sale
- Used petrol BMW 3 Series for sale
- Used BMW 3 Series for sale near Dereham
Photos
53 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.