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: 83,260 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 83,260 miles, approximately 28,400 above the typical mileage for its age. The AskCar estimate for this car is £14,961. It is priced at £15,249, which is £288 above that estimate. The AskCar estimate draws on 6,897 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 13 days ago, the asking price has dropped by £600. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Cars Yard in London. 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: £288 (1%) over the AskCar estimate of £14,961.

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 13 days.

Price history

AskCar first saw this advert on 23 October 2026 at £15,849. Its asking price is now £15,249, £600 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 23 October 2026: £15,849
• 31 October 2026: £15,249

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 22 June 2027.

It has had 3 MOTs. The latest, on 4 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 81,012 miles, which matches the advertised 83,260 miles.

Advertised mileage is about 28,400 miles higher 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: 83,208 miles. Price: £17,500, £2,251 more than this car. Dealer: Magna Motor Group in Warrington. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-e9ba0f09c72c
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 84,000 miles. Price: £15,900, £651 more than this car. Dealer: Automoto UK in Banbridge. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a7158d4dfadb
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 82,000 miles. Price: £17,495, £2,246 more than this car. Dealer: Chase Lane Motors in Waltham Abbey. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bf9c1bd531cd

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, under a mile from this car. Mileage: 66,051 miles. Price: £16,849, £1,600 more than this car. Dealer: Cars Yard in Harrow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dd04b0763802