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: 21,774 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 21,774 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 33,200 fewer miles than a typical 2021 BMW 3 Series. Its asking price of £21,475 is £2,052 below the AskCar estimate of £23,527. The AskCar estimate uses UK dealer asking prices, including 6,742 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 19 days. Its advertised mileage matches the government's MOT record. It is advertised by Group 1 Worthing BMW in Littlehampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £2,052 (8%) under the AskCar estimate of £23,527.

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 6,742 priced BMW 3 Series adverts across different ages and specifications, as of 2 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 19 days.

Price history

AskCar first saw this advert on 14 October 2026 at £21,475. 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 2 November 2026: valid until 25 August 2027.

It has had 3 MOTs. The latest, on 27 July 2026, passed.

Advisories at the latest test: nearside front tyre slightly damaged/cracking or perishing; offside front tyre slightly damaged/cracking or perishing; nearside rear tyre slightly damaged/cracking or perishing; and 1 more.

Mileage at that test: 21,510 miles, which matches the advertised 21,774 miles.

Advertised mileage is about 33,200 miles lower 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 2 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 22,600 miles. Price: £25,490, £4,015 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ceeafb001830
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 22,891 miles. Price: £23,524, £2,049 more than this car. Dealer: Halliwell Jones Warrington BMW in Warrington. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-72595b264e0a
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 20,565 miles. Price: £22,000, £525 more than this car. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8c020a6187dc

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 33 miles from this car. Mileage: 50,512 miles. Price: £19,995, £1,480 less than this car. Dealer: Group 1 Hailsham BMW in Hailsham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-4dd71b613bfd