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 Euro 6 (s/s) 2dr (187 bhp)
• Year: 2021
• Mileage: 13,800 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Colour: White
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 13,800 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 30,300 fewer miles than a typical 2021 BMW 4 Series. Priced at £25,450, it is advertised £1,888 below the AskCar estimate of £27,338. The AskCar estimate uses UK dealer asking prices, including 1,833 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 161 days ago. Its asking price has since fallen by £1,500. Our records show an MOT expiry date of 23 June 2026, which has passed. Ask the dealer for an update. Its advertised mileage matches the government's MOT record. The seller is London Carz, based in London. 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: £1,888 (6%) under the AskCar estimate of £27,338.

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 £26,950. Its asking price is now £25,450, £1,500 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 28 May 2026: £26,950
• 20 June 2026: £26,995
• 22 June 2026: £27,000
• 4 July 2026: £26,990
• 14 August 2026: £26,950
• 24 August 2026: £26,850
• 28 August 2026: £26,450
• 5 September 2026: £26,490
• 12 September 2026: £26,450
• 24 September 2026: £25,950
• 12 October 2026: £25,995
• 13 October 2026: £25,950
• 21 October 2026: £25,500
• 3 November 2026: £25,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 23 June 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 24 June 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 10,849 miles, which matches the advertised 13,800 miles.

Advertised mileage is about 30,300 miles lower 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: 17,330 miles. Price: £26,390, £940 more than this car. Dealer: Stratstone Bmw Harrogate in Harrogate. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-de4c3cd8923e
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, grey. Mileage: 24,428 miles. Price: £25,995, £545 more than this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-bcb8f2603746
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 30,035 miles. Price: £24,849, £601 less than this car. Dealer: Ocean Plymouth in Plymouth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-bcaf664107a0

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue, 10 miles from this car. Mileage: 57,500 miles. Price: £22,950, £2,500 less than this car. Dealer: Danson Motors in Sidcup. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-0df77e286ef4