2021 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto 4WD Euro 6 (s/s) 2dr (181 bhp)
• Year: 2021
• Mileage: 24,024 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 159 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 24,024 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 20,100 fewer miles than a typical 2021 BMW 4 Series. The AskCar estimate for this car is £26,534. It is priced at £26,750, which is £216 above that estimate. The AskCar estimate draws on 1,814 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 57 days ago. Its asking price has since fallen by £240. The recorded MOT expired on 25 August 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stratstone Select Bracknell, based in Bracknell. 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: £216 (under 1%) over the AskCar estimate of £26,534.

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 petrol 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 57 days.

Price history

AskCar first saw this advert on 8 September 2026 at £26,990. Its asking price is now £26,750, £240 less. The latest price cut was seen on 30 September 2026.

Price changes recorded:

• 8 September 2026: £26,990
• 30 September 2026: £26,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 25 August 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 26 August 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 16,620 miles, which matches the advertised 24,024 miles.

Advertised mileage is about 20,100 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

45 other 2021 BMW 4 Series M Sport 2.0 petrol automatic coupes are for sale at UK dealers, from £17,490 to £27,975, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, black. Mileage: 23,603 miles. Price: £27,000, £250 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-fee384f694d2
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 23,110 miles. Price: £24,995, £1,755 less than this car. Dealer: Agnew Group Bavarian BMW in Belfast. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-416e680d89ac
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white. Mileage: 22,884 miles. Price: £24,549, £2,201 less than this car. Dealer: Motorpoint Norwich in Norwich. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-a2829217e2a0

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white, 14 miles from this car. Mileage: 56,431 miles. Price: £17,490, £9,260 less than this car. Dealer: Car Holics in Hillingdon. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-50114104eb76