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: 70,370 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 70,370 miles, approximately 15,500 above the typical mileage for its age. The dealer is asking £19,250, which is £1,827 above the AskCar estimate of £17,423. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. Since we first spotted the advert 39 days ago, the asking price has dropped by £1,250. Our latest MOT record expired on 20 October 2026. Check the current position with the dealer. Its advertised mileage matches the government's MOT record. The seller is Sytner Cardiff BMW, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,827 (10%) over the AskCar estimate of £17,423.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 39 days.

Price history

AskCar first saw this advert on 27 September 2026 at £20,500. Its asking price is now £19,250, £1,250 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 27 September 2026: £20,500
• 7 October 2026: £19,750
• 24 October 2026: £19,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 20 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 7 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 51,419 miles, which matches the advertised 70,370 miles.

Advertised mileage is about 15,500 miles higher 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 70,000 miles. Price: £18,485, £765 less than this car. Dealer: Autochoice Car Supermarket in Blackburn. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-cc353d4552a5
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 69,947 miles. Price: £18,999, £251 less than this car. Dealer: CG Motor Land in Leicester. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ccf0d606ac51
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 72,568 miles. Price: £16,495, £2,755 less than this car. Dealer: Switch Car Group in Liverpool. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2e126f6e3670

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, under a mile from this car. Mileage: 20,565 miles. Price: £22,000, £2,750 more than this car. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-30a32cfa2a20