2021 BMW 3 Series 2.0 330i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 330i M Sport Auto RWD Euro 6 4dr (254 bhp)
• Year: 2021
• Mileage: 24,255 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 254 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 148 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 BMW 3 Series M Sport is 24,255 miles. Its asking price of £25,975 is £124 below the AskCar estimate of £26,099. The AskCar estimate uses 6,897 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 47 days ago. Its asking price has since fallen by £2,500. Ask the dealer why the advert shows fewer miles than the 24,954 recorded at the latest MOT. MOT records show an expiry date of 19 August 2027. The seller is Group 1 Borehamwood BMW, based in Borehamwood. 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: £124 (under 1%) under the AskCar estimate of £26,099.

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 47 days.

Price history

AskCar first saw this advert on 19 September 2026 at £28,475. Its asking price is now £25,975, £2,500 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 19 September 2026: £28,475
• 26 September 2026: £27,975
• 10 October 2026: £27,475
• 17 October 2026: £26,975
• 27 October 2026: £26,475
• 3 November 2026: £25,975

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 19 August 2027.

It has had 3 MOTs. The latest, on 13 August 2026, passed.

Advisories at the latest test: offside front tyre has a cut but not deep enough to reach the ply or cords; offside rear tyre has a cut but not deep enough to reach the ply or cords; nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 24,954 miles. The advert says 24,255 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 30,600 miles lower 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: 23,623 miles. Price: £23,495, £2,480 less than this car. Dealer: JCB Group Ashford Orbital Kia in Ashford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7d14ce336447
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 23,585 miles. Price: £23,999, £1,976 less than this car. Dealer: Lookers BMW Stoke-On-Trent in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-917a21bb93b7
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 22,891 miles. Price: £23,352, £2,623 less than this car. Dealer: Halliwell Jones Warrington BMW in Warrington. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-72595b264e0a

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 4 miles from this car. Mileage: 83,260 miles. Price: £15,249, £10,726 less than this car. Dealer: Cars Yard in Harrow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-64f82d8a3369