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: 57,500 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 57,500 miles, this 2021 BMW 4 Series M Sport has covered about 13,400 more miles than other 2021 BMW 4 Series cars. Its asking price of £22,950 is £358 above the AskCar estimate of £22,592. The AskCar estimate uses UK dealer asking prices, including 1,814 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 68 days ago. Its asking price has since fallen by £1,000. The government's MOT record matches its advertised mileage. You can find this car at Danson Motors in Sidcup. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £358 (1%) over the AskCar estimate of £22,592.

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 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.

A 2021 BMW 4 Series with the 2.0 diesel engine is typically advertised at £24,000: the median of the 144 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW 4 Series has been on sale for at least 68 days.

Price history

AskCar first saw this advert on 28 August 2026 at £23,950. Its asking price is now £22,950, £1,000 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 28 August 2026: £23,950
• 25 September 2026: £23,450
• 31 October 2026: £22,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 20 August 2027.

It has had 4 MOTs. The latest, on 12 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 57,698 miles, which matches the advertised 57,500 miles.

Advertised mileage is about 13,400 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 57,000 miles. Price: £22,990, the same price as this car. Dealer: My Next Car in Sandy. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e535ec62af1e
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue. Mileage: 54,749 miles. Price: £23,490, £540 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: 60,520 miles. Price: £22,295, £655 less than this car. Dealer: Group 1 Cambridge BMW in Cambridge. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-081344220a6c

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white, 10 miles from this car. Mileage: 13,800 miles. Price: £25,450, £2,500 more than this car. Dealer: London Carz in London. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-7088d1e0752c