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: 40,356 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 40,356 miles, approximately 14,500 below the typical mileage for its age. The dealer is asking £23,450, which is £779 above the AskCar estimate of £22,671. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We have tracked this advert for 1 day. Its advertised mileage matches the government's MOT record. The seller is Sytner Maidenhead BMW, based in Maidenhead. 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

Fair price: £779 (3%) over the AskCar estimate of £22,671.

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

Time on sale

AskCar first saw this 2021 BMW 3 Series advertised 1 day ago. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 429 of the 907 first advertised between 10 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £23,450. 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 5 November 2026: valid until 21 November 2026.

It has had 3 MOTs. The latest, on 3 November 2025, passed.

Advisories at the latest test: offside front nail in tyre; nearside rear inner tyre slightly damaged/cracking or perishing; offside rear inner tyre slightly damaged/cracking or perishing.

Mileage at that test: 32,617 miles, which matches the advertised 40,356 miles.

Advertised mileage is about 14,500 miles lower 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 £14,495 to £29,990, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol estate, blue. Mileage: 40,368 miles. Price: £26,900, £3,450 more than this car. Dealer: Berry Heathrow in Heathrow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9be1f7737268
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, grey. Mileage: 40,500 miles. Price: £29,990, £6,540 more than this car. Dealer: Exoria Cars in St Albans. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ef3f55ff0098
• 2021 BMW 3 Series M Sport, 2.0 petrol estate, black. Mileage: 39,804 miles. Price: £22,599, £851 less than this car. Dealer: Halliwell Jones Southport BMW in Southport. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-65859715219e