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: 66,000 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 66,000 miles, around 11,200 more miles than is typical for its age. Its asking price of £20,989 is £1,195 above the AskCar estimate of £19,794. 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 have tracked this advert for 13 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Herts And Essex Motor Company in Hoddesdon. 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: £1,195 (6%) over the AskCar estimate of £19,794.

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 13 days.

Price history

AskCar first saw this advert on 23 October 2026 at £20,989. 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 12 October 2027.

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

There were no advisories at the latest test.

Mileage at that test: 66,422 miles, which matches the advertised 66,000 miles.

Advertised mileage is about 11,200 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, grey. Mileage: 65,142 miles. Price: £20,999, the same price as this car. Dealer: MINI UK at Cotswold Hereford in Hereford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ae6712f0ed9d
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 64,000 miles. Price: £18,990, £1,999 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: 68,204 miles. Price: £18,521, £2,468 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-f3d7233ce236

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white, 5 miles from this car. Mileage: 41,999 miles. Price: £20,989, the same price as this car. Dealer: Essex Prestige in Harlow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-ca38751a2213