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) 5dr Touring (181 bhp)
• Year: 2021
• Mileage: 70,032 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 153 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 70,032 miles, approximately 14,900 above the typical mileage for its age. The AskCar estimate for this car is £18,671. It is priced at £17,691, which is £980 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 38 days ago. Its asking price has since fallen by £309. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Quality Part X Dunstable, based in Dunstable. 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: £980 (5%) under the AskCar estimate of £18,671.

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 38 days.

Price history

AskCar first saw this advert on 29 September 2026 at £18,000. Its asking price is now £17,691, £309 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 29 September 2026: £18,000
• 30 September 2026: £17,996
• 2 October 2026: £17,976
• 3 October 2026: £17,980
• 5 October 2026: £17,976
• 7 October 2026: £17,900
• 23 October 2026: £17,796
• 26 October 2026: £17,751
• 30 October 2026: £17,700
• 2 November 2026: £17,696
• 4 November 2026: £17,691

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 29 July 2027.

It has had 3 MOTs. The latest, on 20 July 2026, passed.

Advisories at the latest test: offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 69,453 miles, which matches the advertised 70,032 miles.

Advertised mileage is about 14,900 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

30 other 2021 BMW 3 Series M Sport 2.0 petrol automatic estates are for sale at UK dealers, from £13,995 to £29,990, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol estate, white. Mileage: 69,314 miles. Price: £19,498, £1,807 more than this car. Dealer: Arnold Clark Wirral Renault / Dacia in Birkenhead. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-54046ed0204f
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, grey. Mileage: 67,128 miles. Price: £19,998, £2,307 more than this car. Dealer: Arnold Clark Stirling Volvo / GWM / BYD in Stirling. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-61b8f3e6ecca
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, white. Mileage: 66,232 miles. Price: £17,999, £308 more than this car. Dealer: Charles Hurst Usedirect Belfast 62 Boucher Road in Belfast. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-199c6ed0c749

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol estate, grey, 12 miles from this car. Mileage: 40,500 miles. Price: £29,990, £12,299 more than this car. Dealer: Exoria Cars in St Albans. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ef3f55ff0098