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: 53,203 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

This 2021 BMW 3 Series M Sport has covered 53,203 miles. Its asking price of £17,999 is £642 below the AskCar estimate of £18,641. The AskCar estimate draws on 6,902 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 47 days ago. Its asking price has since fallen by £650. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at cinch Corby in North Northamptonshire. 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: £642 (3%) under the AskCar estimate of £18,641.

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 47 days.

Price history

AskCar first saw this advert on 20 September 2026 at £18,649. Its asking price is now £17,999, £650 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 20 September 2026: £18,649
• 22 September 2026: £19,199
• 23 September 2026: £18,499
• 22 October 2026: £17,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 29 September 2027.

It has had 3 MOTs. The latest, on 15 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,200 miles, which matches the advertised 53,203 miles.

Advertised mileage is about 1,900 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

143 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £25,975, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 53,444 miles. Price: £19,395, £1,396 more than this car. Dealer: Motor Trust UK Garstang in Preston. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c8daac2312c2
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 52,840 miles. Price: £17,991, the same price as this car. Dealer: Cardiff Trade Sales in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bdb376ab0c4f
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 52,239 miles. Price: £19,099, £1,100 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-55b02185bbaa

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black, under a mile from this car. Mileage: 66,945 miles. Price: £19,799, £1,800 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-230d8c9a446e