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: 34,848 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Colour: Black
• CO2: 128 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 34,848 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 9,200 fewer miles than a typical 2021 BMW 4 Series. The dealer is asking £23,995, which is £752 below the AskCar estimate of £24,747. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. It first appeared in our advert records 15 days ago. The government's MOT record matches its advertised mileage. You can find this car at A1 Auto Solutions in Maidenhead. 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: £752 (3%) under the AskCar estimate of £24,747.

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 15 days.

Price history

AskCar first saw this advert on 21 October 2026 at £23,995. Its asking price has not changed.

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 October 2027.

It has had 4 MOTs. The latest, on 13 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,717 miles, which matches the advertised 34,848 miles.

Advertised mileage is about 9,200 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, grey. Mileage: 32,600 miles. Price: £24,995, £1,000 more than this car. Dealer: NEO Motor Company in Warrington. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-1b975623a225
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, white. Mileage: 32,290 miles. Price: £24,495, £500 more than this car. Dealer: Roadside Motors Edwin May Portadown in Portadown. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-cb936a91bed3
• 2021 BMW 4 Series M Sport, 2.0 diesel coupe, black. Mileage: 37,900 miles. Price: £22,995, £1,000 less than this car. Dealer: Yorkshire Vehicle Solutions in York. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-f62467d64221

• The nearest: 2021 BMW 4 Series M Sport, 2.0 diesel coupe, blue, 15 miles from this car. Mileage: 73,131 miles. Price: £19,350, £4,645 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-8e45bfc0e270