2021 BMW 3 Series 2.0 318i M Sport

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: 49,850 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 153 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 49,850 miles, this 2021 BMW 3 Series M Sport has covered about 5,300 fewer miles than other 2021 BMW 3 Series cars. The dealer is asking £19,799, which is £108 below the AskCar estimate of £19,907. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. Since we first spotted the advert 16 days ago, the asking price has dropped by £200. You can find this car at Fresh Motors in Thetford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £108 (under 1%) under the AskCar estimate of £19,907.

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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 16 days.

Price history

AskCar first saw this advert on 21 October 2026 at £19,999. Its asking price is now £19,799, £200 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 21 October 2026: £19,999
• 31 October 2026: £19,799

Mileage and MOT

Advertised mileage is about 5,300 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 £13,995 to £29,990, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol estate, blue. Mileage: 49,600 miles. Price: £26,250, £6,451 more than this car. Dealer: nucar in Basildon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-f4c2452f5074
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, black. Mileage: 47,100 miles. Price: £22,990, £3,191 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-013473fc06e4
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, blue. Mileage: 52,870 miles. Price: £20,250, £451 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3374642d7d9a

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol estate, black, under a mile from this car. Mileage: 25,209 miles. Price: £20,999, £1,200 more than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-aabcd90be2dd