2021 BMW 3 Series 2.0 M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 MHT M Sport Auto Euro 6 4dr
• Year: 2021
• Mileage: 57,347 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Grey
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 57,347 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 2,700 more miles than a typical 2021 BMW 3 Series. Priced at £21,000, it is advertised £571 above the AskCar estimate of £20,429. To work out the AskCar estimate, we analyse UK dealer adverts for 6,906 BMW 3 Series cars across different ages and specifications. We first recorded this car for sale 5 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. 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 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £571 (2%) over the AskCar estimate of £20,429.

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 6,906 priced BMW 3 Series adverts across different ages and specifications, as of 12 November 2026.

Time on sale

AskCar first saw this 2021 BMW 3 Series advertised 5 days ago. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 457 of the 981 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £21,000. 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 12 November 2026: valid until 29 June 2027.

It has had 3 MOTs. The latest, on 24 June 2026, passed.

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

Mileage at that test: 53,627 miles, which matches the advertised 57,347 miles.

Advertised mileage is about 2,700 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

59 other 2021 BMW 3 Series M Sport 2.0 diesel automatic saloons are for sale at UK dealers, from £12,699 to £25,495, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 56,000 miles. Price: £20,000, £1,000 less than this car. Dealer: Praters in Leighton Buzzard. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-42a6035914dc
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 55,541 miles. Price: £20,560, £440 less than this car. Dealer: Vehicle Select in Bolton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-23eb7030c018
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 59,224 miles. Price: £18,060, £2,940 less than this car. Dealer: Evans Halshaw BYD Mansfield in Mansfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7c144ef5e598

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue, 17 miles from this car. Mileage: 73,370 miles. Price: £17,000, £4,000 less than this car. Dealer: Carbase Lympsham in Lympsham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-841b8ab8a8b1