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: 58,472 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

At 58,472 miles, this 2021 BMW 3 Series M Sport has covered about 3,600 more miles than other 2021 BMW 3 Series cars. The AskCar estimate for this car is £18,065. It is priced at £17,699, which is £366 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We first recorded this car for sale today. The recorded MOT expired on 27 October 2026, so ask the dealer whether it has been renewed. Its advertised mileage matches the government's MOT record. The seller is Williams Bolton Bmw, based in Bolton. 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: £366 (2%) under the AskCar estimate of £18,065.

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

AskCar first saw this 2021 BMW 3 Series advertised today. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 429 of the 907 first advertised between 10 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £17,699. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 27 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 28 October 2025, passed.

Advisories at the latest test: offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 50,711 miles, which matches the advertised 58,472 miles.

Advertised mileage is about 3,600 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, white. Mileage: 57,967 miles. Price: £19,895, £2,196 more than this car. Dealer: Motor Range Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3b10cd0945db
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 57,833 miles. Price: £20,998, £3,299 more than this car. Dealer: Arnold Clark Stirling Volvo / GWM / BYD in Stirling. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-e089a124ef46
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 57,523 miles. Price: £17,190, £509 less than this car. Dealer: Evans Halshaw Omoda Jaecoo Gainsborough in Gainsborough. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-61e2708f9866

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 7 miles from this car. Mileage: 74,000 miles. Price: £18,940, £1,241 more than this car. Dealer: Dace Specialist Car Centre Manchester - Trading Standards Approved in Manchester. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-d54df563cee9