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: 18,624 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 18,624 miles, around 35,600 fewer miles than is typical for its age. Priced at £22,885, it is advertised £767 below the AskCar estimate of £23,652. To work out the AskCar estimate, we analyse UK dealer adverts for 6,886 BMW 3 Series cars across different ages and specifications. Since we first spotted the advert 45 days ago, the asking price has dropped by £610. The recorded MOT expired on 19 September 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Motor Trust Haslingden, based in Rossendale. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 14 November 2026.

How we estimate prices and check cars

Price

Fair price: £767 (3%) under the AskCar estimate of £23,652.

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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 14 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 45 days.

Price history

AskCar first saw this advert on 30 September 2026 at £23,495. Its asking price is now £22,885, £610 less. The latest price cut was seen on 13 November 2026.

Price changes recorded:

• 30 September 2026: £23,495
• 23 October 2026: £22,895
• 13 November 2026: £22,885

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 14 November 2026: the latest record we hold ran out on 19 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 13 September 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 15,990 miles, which matches the advertised 18,624 miles.

Advertised mileage is about 35,600 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

149 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £13,750 to £27,298, as of 14 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, £1,105 more than 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, £885 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: 15,556 miles. Price: £24,918, £2,033 more than this car. Dealer: Bowker BMW Preston in Preston. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7ef032206952

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue, under a mile from this car. Mileage: 36,836 miles. Price: £21,095, £1,790 less than this car. Dealer: Motor Trust Haslingden in Haslingden. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c97f43cdfd3d