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: 19,786 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

This 2021 BMW 3 Series M Sport has covered 19,786 miles, around 34,900 fewer miles than is typical for its age. The AskCar estimate for this car is £23,734. It is priced at £24,000, which is £266 above that estimate. The AskCar estimate uses 6,864 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 46 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner High Wycombe BMW, based in High Wycombe. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £266 (1%) over the AskCar estimate of £23,734.

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 6,864 priced BMW 3 Series adverts across different ages and specifications, as of 10 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 46 days.

Price history

AskCar first saw this advert on 25 September 2026 at £25,000. Its asking price is now £24,000, £1,000 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 25 September 2026: £25,000
• 22 October 2026: £24,500
• 27 October 2026: £24,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 11 November 2026.

It has had 2 MOTs. The latest, on 12 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 15,229 miles, which matches the advertised 19,786 miles.

Advertised mileage is about 34,900 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 £13,750 to £27,698, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 20,400 miles. Price: £23,990, the same price as this car. Dealer: Colin Bryan T/A CB Autosales in Kirkcaldy. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3dd19b655cf3
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 20,565 miles. Price: £22,000, £2,000 less than this car. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-30a32cfa2a20
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 22,600 miles. Price: £25,490, £1,490 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ceeafb001830

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black, 5 miles from this car. Mileage: 35,384 miles. Price: £23,995, the same price as this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-734cde9507b8