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: 96,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 96,000 miles, this 2021 BMW 4 Series M Sport has covered about 51,900 more miles than other 2021 BMW 4 Series cars. The AskCar estimate for this car is £16,718. It is priced at £17,495, which is £777 above that estimate. 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. It first appeared in our advert records 36 days ago. Its advertised mileage matches the government's MOT record. You can find this car at Motorhouse (Beds) in Bedford. 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: £777 (4%) over the AskCar estimate of £16,718.

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 £16,995. Its asking price is now £17,495, £500 more.

Price changes recorded:

• 30 September 2026: £16,995
• 2 November 2026: £17,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 29 September 2027.

It has had 3 MOTs. The latest, on 21 September 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge 2.2mm; offside rear tyre worn close to legal limit/worn on edge 2.9mm; nearside front upper suspension component damaged but not seriously weakened rubber boot starting to split; and 3 more.

Mileage at that test: 96,233 miles, which matches the advertised 96,000 miles.

Advertised mileage is about 51,900 miles higher 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, white. Mileage: 70,584 miles. Price: £19,950, £2,455 more than this car. Dealer: Staffordshire Car Company in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e032643e2607
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, green. Mileage: 69,441 miles. Price: £20,650, £3,155 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-c80af27cad41
• 2021 BMW 4 Series M Sport, 2.0 petrol coupe, red. Mileage: 60,566 miles. Price: £22,149, £4,654 more than this car. Dealer: Greendale Car Sales in Hawick. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-26cecc1cf030

• The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol coupe, white, 7 miles from this car. Mileage: 31,200 miles. Price: £21,995, £4,500 more than this car. Dealer: Raymond Smith Garages in Bedford. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-9a15d24cf92f