2021 BMW 3 Series 2.0 320d MHT M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320d MHT M Sport Auto RWD Euro 6 (s/s) 4dr (187 bhp)
• Year: 2021
• Mileage: 34,223 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 34,223 miles, around 20,900 fewer miles than is typical for its age. The AskCar estimate for this car is £24,290. It is priced at £21,999, which is £2,291 below that estimate. The AskCar estimate draws on 6,862 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 41 days ago. Its asking price has since fallen by £700. We checked its advertised mileage against the government's MOT record, and they match. The seller is cinch Corby, based in North Northamptonshire. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Good value: £2,291 (9%) under the AskCar estimate of £24,290.

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 6,862 priced BMW 3 Series adverts across different ages and specifications, as of 4 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 41 days.

Price history

AskCar first saw this advert on 24 September 2026 at £22,699. Its asking price is now £21,999, £700 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 24 September 2026: £22,699
• 25 September 2026: £22,499
• 27 October 2026: £21,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 1 July 2027.

It has had 3 MOTs. The latest, on 15 June 2026, passed.

Advisories at the latest test: offside front nail in tyre.

Mileage at that test: 32,679 miles, which matches the advertised 34,223 miles.

Advertised mileage is about 20,900 miles lower 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 £13,500 to £25,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 36,233 miles. Price: £20,995, £1,004 less than this car. Dealer: TF Car Centre in Euxton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dbfa2cd553ed
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 36,844 miles. Price: £23,590, £1,591 more than this car. Dealer: Marshall BMW Grimsby in Grimsby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bcef8fef470f
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 37,757 miles. Price: £20,498, £1,501 less than this car. Dealer: Arnold Clark Glasgow Hamilton Road Peugeot Leapmotor in Glasgow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-5b5e12e93fae

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey, 17 miles from this car. Mileage: 48,500 miles. Price: £21,790, £209 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-02552e2d4180