2021 BMW 4 Series 2.0 420d MHT M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d MHT M Sport Auto 4WD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2021
• Mileage: 85,144 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 85,144 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 41,500 more miles than a typical 2021 BMW 4 Series. The dealer is asking £19,775, which is £1,447 above the AskCar estimate of £18,328. To work out the AskCar estimate, we analyse UK dealer adverts for 1,805 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 61 days ago. Its asking price has since fallen by £500. The government's MOT record matches its advertised mileage. It is for sale at Riverside Motor Company (2009) in Chesterfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,447 (7%) over the AskCar estimate of £18,328.

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 1,805 priced BMW 4 Series adverts across different ages and specifications, as of 9 November 2026.

A 2021 BMW 4 Series with the 2.0 diesel engine is typically advertised at £24,000: the median of the 143 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 61 days.

Price history

AskCar first saw this advert on 9 September 2026 at £20,275. Its asking price is now £19,775, £500 less. The latest price cut was seen on 1 October 2026.

Price changes recorded:

• 9 September 2026: £20,275
• 16 September 2026: £19,975
• 1 October 2026: £19,775

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 21 September 2027.

It has had 4 MOTs. The latest, on 22 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 85,144 miles, which matches the advertised 85,144 miles.

Advertised mileage is about 41,500 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

34 other 2021 BMW 4 Series M Sport 2.0 diesel automatic coupes are for sale at UK dealers, from £17,490 to £26,500, as of 9 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 95,385 miles. Price: £18,900, £875 less than this car. Dealer: Elton Cars in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-2efc3e00610e
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 97,000 miles. Price: £17,490, £2,285 less than this car. Dealer: Ashley Vehicle Solutions in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-fcf11892de2e
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 73,131 miles. Price: £19,350, £425 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-8e45bfc0e270

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue, 15 miles from this car. Mileage: 68,086 miles. Price: £20,450, £675 more than this car. Dealer: Parkway Motor Group in Edwinstowe. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e6e428864a36