2021 BMW 4 Series 2.0 420d MHT M Sport

Price: £20,450. Fair price: £546 (2%) under the AskCar estimate of £20,996, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,833 priced BMW 4 Series adverts on AskCar as of 5 November 2026.

AskCar lists 1,879 used BMW 4 Series from 1,081 UK dealerships, as of 5 November 2026.

Overview

  • Make: BMW
  • Model: 4 Series
  • Trim: M Sport
  • Version: 2.0 420d MHT M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
  • Year: 2021
  • Mileage: 68,086 miles
  • Fuel: Diesel, mild hybrid
  • Body: Coupe, 2 doors, 4 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Blue
  • CO2: 121 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 68,086 miles, this 2021 BMW 4 Series M Sport has covered about 24,000 more miles than other 2021 BMW 4 Series cars. Its asking price of £20,450 is £546 below the AskCar estimate of £20,996. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 88 days ago. Its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Parkway Motor Group in Edwinstowe. 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: £546 (2%) under the AskCar estimate of £20,996.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 November 2026.

A 2021 BMW 4 Series with the 2.0 diesel engine is typically advertised at £24,000: the median of the 149 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 88 days.

Price history

AskCar first saw this advert on 9 August 2026 at £20,950. Its asking price is now £20,450, £500 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

  • 9 August 2026: £20,950
  • 4 November 2026: £20,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 19 July 2027.

It has had 3 MOTs. The latest, on 20 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 67,883 miles, which matches the advertised 68,086 miles.

Advertised mileage is about 24,000 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

35 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 5 November 2026.

The 3 closest to this car in mileage:

  • 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 68,500 miles. Price: £21,270, £820 more than this car. Dealer: Motionmotorgroup in Market Harborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-9cb90111166c
  • 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 66,700 miles. Price: £21,499, £1,049 more than this car. Dealer: Blakedown Car Company in Wombourne. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-f99fead5c83d
  • 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 64,000 miles. Price: £20,490, the same price as this car. Dealer: Car Choice Teeside in Teesside. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-4ddcbca29778
  • The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black, 15 miles from this car. Mileage: 85,144 miles. Price: £19,775, £675 less than this car. Dealer: Riverside Motor Company (2009) in Chesterfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-f36578f5ac10

Browse all BMW 4 Series cars for sale · 2021 BMW 4 Series price guide

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Photos

49 photos of this car are on its AskCar page.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.