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 4WD Euro 6 4dr (181 bhp)
• Year: 2021
• Mileage: 78,590 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 78,590 miles, around 23,400 more miles than is typical for its age. The AskCar estimate for this car is £17,164. It is priced at £17,995, which is £831 above that estimate. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 100 days ago, the asking price has dropped by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at OC Davies & Son in Carmarthen. 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: £831 (4%) over the AskCar estimate of £17,164.

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 100 days.

Price history

AskCar first saw this advert on 29 July 2026 at £18,995. Its asking price is now £17,995, £1,000 less. The latest price cut was seen on 20 September 2026.

Price changes recorded:

• 30 July 2026: £18,995
• 20 September 2026: £17,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 27 November 2026.

It has had 2 MOTs. The latest, on 26 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 75,660 miles, which matches the advertised 78,590 miles.

Advertised mileage is about 23,400 miles higher 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, white. Mileage: 82,000 miles. Price: £17,495, £500 less than this car. Dealer: Chase Lane Motors in Waltham Abbey. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bf9c1bd531cd
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 74,000 miles. Price: £18,940, £945 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
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 74,000 miles. Price: £19,495, £1,500 more than this car. Dealer: Empire Autos NI in Craigavon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-073b6ec4040c

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 39 miles from this car. Mileage: 65,119 miles. Price: £16,995, £1,000 less than this car. Dealer: Bridgend Ford in Bridgend. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a0165691f276