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 RWD Euro 6 (s/s) 2dr (181 bhp)
• Year: 2021
• Mileage: 27,204 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 27,204 miles, this 2021 BMW 4 Series M Sport has covered about 16,900 fewer miles than other 2021 BMW 4 Series cars. Its asking price of £24,995 is £1,023 below the AskCar estimate of £26,018. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. We first recorded this car for sale 36 days ago. Its advertised mileage matches the government's MOT record. The seller is Norman Motors (Poole), based in Poole. 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: £1,023 (3%) under the AskCar estimate of £26,018.

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 petrol 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 36 days.

Price history

AskCar first saw this advert on 30 September 2026 at £24,995. 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 10 May 2027.

It has had 4 MOTs. The latest, on 11 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,557 miles, which matches the advertised 27,204 miles.

Advertised mileage is about 16,900 miles lower than the median mileage of a 2021 BMW 4 Series on AskCar.

Similar cars

48 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,025 miles. Price: £23,099, £1,896 less than this car. Dealer: Motorpoint Oldbury in Oldbury. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-1e94fcfa8fd3
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,502 miles. Price: £24,799, £196 less than this car. Dealer: Fords of Winsford Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-029b5d1c5ee2
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, blue. Mileage: 28,622 miles. Price: £23,985, £1,010 less than this car. Dealer: Williams Bmw Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-60506fe19a03

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white, 29 miles from this car. Mileage: 18,655 miles. Price: £24,995, the same price as this car. Dealer: Partridge BMW in Eastleigh. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-8cead9a1aa96