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: 24,428 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Colour: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 24,428 miles, this 2021 BMW 4 Series M Sport has covered about 19,700 fewer miles than other 2021 BMW 4 Series cars. Its asking price of £25,995 is £94 below the AskCar estimate of £26,089. To work out the AskCar estimate, we analyse UK dealer adverts for 1,814 BMW 4 Series cars across different ages and specifications. We first recorded this advert 83 days ago, and its asking price has since fallen by £2,995. Its advertised mileage matches the government's MOT record. It is for sale at Partridge BMW in Eastleigh. 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: £94 (under 1%) under the AskCar estimate of £26,089.

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 83 days.

Price history

AskCar first saw this advert on 13 August 2026 at £28,990. Its asking price is now £25,995, £2,995 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 13 August 2026: £28,990
• 10 September 2026: £28,491
• 19 September 2026: £27,992
• 23 September 2026: £27,693
• 26 September 2026: £27,394
• 7 October 2026: £26,995
• 21 October 2026: £26,695
• 28 October 2026: £26,295
• 4 November 2026: £25,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 23 December 2026.

It has had 2 MOTs. The latest, on 28 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 21,579 miles, which matches the advertised 24,428 miles.

Advertised mileage is about 19,700 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 30,035 miles. Price: £24,849, £1,146 less than this car. Dealer: Ocean Plymouth in Plymouth. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-bcaf664107a0
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 17,330 miles. Price: £26,390, £395 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, white. Mileage: 32,290 miles. Price: £24,495, £1,500 less than this car. Dealer: Roadside Motors Edwin May Portadown in Portadown. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-cb936a91bed3

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue, 4 miles from this car. Mileage: 49,500 miles. Price: £18,995, £7,000 less than this car. Dealer: Eclipse Car Sales in Winchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-b7a83f785d08