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 RWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2021
• Mileage: 68,500 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 128 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 4 Series M Sport is advertised with 68,500 miles, approximately 24,400 above the typical mileage for its age. Its asking price of £21,270 is £338 above the AskCar estimate of £20,932. The AskCar estimate draws on 1,833 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 20 days ago, the asking price has dropped by £2,507. The government's MOT record matches its advertised mileage. It is for sale at Motionmotorgroup in Market Harborough. 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: £338 (1%) over the AskCar estimate of £20,932.

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 20 days.

Price history

AskCar first saw this advert on 16 October 2026 at £23,777. Its asking price is now £21,270, £2,507 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 16 October 2026: £23,777
• 18 October 2026: £23,077
• 20 October 2026: £22,777
• 21 October 2026: £22,497
• 27 October 2026: £21,997
• 28 October 2026: £21,970
• 30 October 2026: £21,470
• 4 November 2026: £21,270

Mileage and MOT

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

It failed its MOT on 5 May 2026 (nearside front tyre tread depth below requirements of 1.6mm; offside front inner tyre tread depth below requirements of 1.6mm) and passed 1 day later, on 6 May 2026.

There were no advisories at the latest test.

Mileage at that test: 66,738 miles, which matches the advertised 68,500 miles.

Advertised mileage is about 24,400 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, blue. Mileage: 68,086 miles. Price: £20,450, £820 less than this car. Dealer: Parkway Motor Group in Edwinstowe. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e6e428864a36
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 66,700 miles. Price: £21,499, £229 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, black. Mileage: 72,900 miles. Price: £19,490, £1,780 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-c37970f3bdf4