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: 65,142 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Grey
• CO2: 128 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 65,142 miles on the clock, this 2021 BMW 3 Series M Sport has done roughly 10,300 more miles than a typical 2021 BMW 3 Series. The dealer is asking £20,999, which is £1,542 above the AskCar estimate of £19,457. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 79 days ago. Its asking price has since fallen by £951. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is MINI UK at Cotswold Hereford, based in Hereford. 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: £1,542 (7%) over the AskCar estimate of £19,457.

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 79 days.

Price history

AskCar first saw this advert on 18 August 2026 at £21,950. Its asking price is now £20,999, £951 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 18 August 2026: £21,950
• 2 September 2026: £21,949
• 16 September 2026: £21,948
• 29 September 2026: £21,749
• 2 October 2026: £21,748
• 14 October 2026: £21,499
• 24 October 2026: £21,399
• 3 November 2026: £20,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 16 May 2027.

It failed its MOT on 5 May 2026 (nearside side repeater not working) and passed 1 day later, on 6 May 2026.

Advisories at the latest test: nearside front suspension arm ball joint has slight play; offside front tyre worn close to legal limit/worn on edge worn inner edge.

Mileage at that test: 61,569 miles, which matches the advertised 65,142 miles.

Advertised mileage is about 10,300 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 £12,700 to £25,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 66,000 miles. Price: £20,989, the same price as this car. Dealer: Herts And Essex Motor Company in Hoddesdon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9aca27c0790c
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 64,000 miles. Price: £18,990, £2,009 less than this car. Dealer: Dawn Motors in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-97a59b366866
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, black. Mileage: 63,507 miles. Price: £20,500, £499 less than this car. Dealer: Eakin Brothers in Londonderry. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-4301f7100f0b

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 42 miles from this car. Mileage: 70,694 miles. Price: £18,998, £2,001 less than this car. Dealer: Arnold Clark Oldbury Fiat / Motorstore / Jeep / Abarth / BYD in Oldbury. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dfb7529875cd