2021 BMW 3 Series 2.0 320i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)
• Year: 2021
• Mileage: 37,603 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 37,603 miles, this 2021 BMW 3 Series M Sport has covered about 17,500 fewer miles than other 2021 BMW 3 Series cars. Priced at £20,249, it is advertised £1,363 below the AskCar estimate of £21,612. 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 28 days ago. Its asking price has since fallen by £1,150. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Motorpoint Burnley, based in Burnley. 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: £1,363 (6%) under the AskCar estimate of £21,612.

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 28 days.

Price history

AskCar first saw this advert on 9 October 2026 at £21,399. Its asking price is now £20,249, £1,150 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 9 October 2026: £21,399
• 10 October 2026: £20,399
• 17 October 2026: £20,349
• 20 October 2026: £20,399
• 4 November 2026: £20,249

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 15 October 2027.

It has had 3 MOTs. The latest, on 9 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 21,606 miles, which matches the advertised 37,603 miles.

Advertised mileage is about 17,500 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, orange. Mileage: 37,499 miles. Price: £21,444, £1,195 more than this car. Dealer: Dick Lovett Porsche Centre Swindon in Swindon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3f68d7d6d114
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 37,775 miles. Price: £19,499, £750 less than this car. Dealer: H.P.L. Motors - Oldham (Greater Manchester) in Oldham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a603ddeda3d1
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 37,248 miles. Price: £21,950, £1,701 more than this car. Dealer: M B Cars London in St Albans. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-d165e6eb854a

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, under a mile from this car. Mileage: 31,312 miles. Price: £20,949, £700 more than this car. Dealer: Motorpoint Burnley in Burnley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2688e420b9cf