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: 52,485 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

This 2021 BMW 4 Series M Sport has covered 52,485 miles, around 8,400 more miles than is typical for its age. Priced at £22,000, it is advertised £1,047 below the AskCar estimate of £23,047. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 161 days ago, the asking price has dropped by £2,000. Its advertised mileage matches the government's MOT record. The seller is Peoples Falkirk, based in Falkirk. 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: £1,047 (4%) under the AskCar estimate of £23,047.

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 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £24,000. Its asking price is now £22,000, £2,000 less. The latest price cut was seen on 26 October 2026.

Price changes recorded:

• 28 May 2026: £24,000
• 29 May 2026: £23,800
• 6 June 2026: £23,700
• 16 June 2026: £23,400
• 26 June 2026: £23,000
• 12 July 2026: £22,800
• 31 July 2026: £22,700
• 12 August 2026: £22,900
• 17 August 2026: £22,750
• 30 August 2026: £23,000
• 16 September 2026: £22,800
• 23 September 2026: £22,700
• 4 October 2026: £22,500
• 10 October 2026: £22,000
• 18 October 2026: £22,250
• 26 October 2026: £22,000

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 March 2027.

It failed its MOT on 13 March 2026 (offside front headlamp aim too high) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 52,485 miles, which matches the advertised 52,485 miles.

Advertised mileage is about 8,400 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: 54,749 miles. Price: £23,490, £1,490 more than this car. Dealer: Stratstone BMW Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-da04ff4afc6e
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 49,500 miles. Price: £18,995, £3,005 less than this car. Dealer: Eclipse Car Sales in Winchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-b7a83f785d08
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 49,201 miles. Price: £23,890, £1,890 more than this car. Dealer: Stratstone BMW Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-507f22632c2f

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue, 11 miles from this car. Mileage: 46,557 miles. Price: £23,498, £1,498 more than this car. Dealer: Arnold Clark Livingston Vauxhall in Livingston. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-6b9d6c6f4ec2