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: 27,050 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 27,050 miles, around 28,100 fewer miles than is typical for its age. Priced at £21,633, it is advertised £71 below the AskCar estimate of £21,704. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 35 days ago. Its asking price has since fallen by £354. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Bowker BMW Preston, based in Preston. 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: £71 (under 1%) under the AskCar estimate of £21,704.

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 35 days.

Price history

AskCar first saw this advert on 2 October 2026 at £21,987. Its asking price is now £21,633, £354 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 2 October 2026: £21,987
• 21 October 2026: £21,633

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 28 September 2027.

It has had 4 MOTs. The latest, on 23 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 26,825 miles, which matches the advertised 27,050 miles.

Advertised mileage is about 28,100 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: 27,124 miles. Price: £21,956, £323 more than this car. Dealer: Bentley Motor Group in Keighley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8dabd30ca75e
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 27,200 miles. Price: £23,990, £2,357 more than this car. Dealer: Harvey Cooper Cars in Ripon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-41b162f94a8c
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 27,320 miles. Price: £23,495, £1,862 more than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bd13162028a1

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, under a mile from this car. Mileage: 15,556 miles. Price: £24,918, £3,285 more than this car. Dealer: Bowker BMW Preston in Preston. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7ef032206952