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) 4dr (154 bhp)
• Year: 2021
• Mileage: 51,678 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 51,678 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 3,200 fewer miles than a typical 2021 BMW 3 Series. The dealer is asking £19,990, which is £1,178 above the AskCar estimate of £18,812. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We have tracked this advert for 51 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Prestige Cars Of Essex in Epping Forest. 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: £1,178 (6%) over the AskCar estimate of £18,812.

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 51 days.

Price history

AskCar first saw this advert on 15 September 2026 at £19,990. Its asking price has not changed.

Price changes recorded:

• 15 September 2026: £19,990
• 7 October 2026: £23,490
• 5 November 2026: £19,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 9 September 2027.

It has had 4 MOTs. The latest, on 10 September 2026, passed.

Advisories at the latest test: offside front suspension arm ball joint has slight play; front brake disc worn, pitted or scored, but not seriously weakened; front brake pad(s) wearing thin.

Mileage at that test: 51,688 miles, which matches the advertised 51,678 miles.

Advertised mileage is about 3,200 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: 51,700 miles. Price: £19,990, the same price as this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-1cf346fd03dc
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 51,581 miles. Price: £18,325, £1,665 less than this car. Dealer: Grange. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5712d3a146bb
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 51,848 miles. Price: £21,500, £1,510 more than this car. Dealer: Sytner Leicester BMW in Leicester. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-f42cdc6218b7

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, under a mile from this car. Mileage: 22,600 miles. Price: £25,490, £5,500 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ceeafb001830