2021 BMW 4 Series 2.0 420i M Sport
Price: £22,988. Above the going rate: £2,078 (9%) over the AskCar estimate of £20,910, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,833 priced BMW 4 Series adverts on AskCar as of 5 November 2026.
AskCar lists 1,879 used BMW 4 Series from 1,081 UK dealerships, as of 5 November 2026.
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: 65,000 miles
- Fuel: Petrol
- Body: Convertible, 2 doors, 4 seats
- Engine: 2.0 litres, 181 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Black
- CO2: 160 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 65,000 miles, this 2021 BMW 4 Series M Sport has covered about 20,900 more miles than other 2021 BMW 4 Series cars. The dealer is asking £22,988, which is £2,078 above the AskCar estimate of £20,910. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. This car was first seen in our listings data 35 days ago. The seller is West Kent Motor Group Online, based in Sevenoaks. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Above the going rate: £2,078 (9%) over the AskCar estimate of £20,910.
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 35 days.
Price history
AskCar first saw this advert on 1 October 2026 at £22,988. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 20,900 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.
Similar cars
26 other 2021 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £18,990 to £33,950, as of 5 November 2026.
The 3 closest to this car in mileage:
- 2021 BMW 4 Series M Sport, 2.0 petrol convertible, black. Mileage: 68,323 miles. Price: £21,000, £1,988 less than this car. Dealer: Grange. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-1bfff9575fa2
- 2021 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 58,943 miles. Price: £22,990, the same price as this car. Dealer: Group 1 Southend BMW in Southend-on-Sea. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-088e831a7c9e
- 2021 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 58,093 miles. Price: £21,057, £1,931 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-52eb4cdc01ce
- The nearest: 2021 BMW 4 Series M Sport, 2.0 petrol convertible, white, 13 miles from this car. Mileage: 28,848 miles. Price: £27,799, £4,811 more than this car. Dealer: Hendy Ford Redhill in Redhill. AskCar page: https://askcar.co.uk/car/bmw-4-series-2021-e62e3bdb919c
Browse all BMW 4 Series cars for sale · 2021 BMW 4 Series price guide
More like this
- Used BMW 4 Series M Sport prices
- Used BMW 4 Series for sale under £30,000
- Used petrol BMW 4 Series for sale
- Used BMW 4 Series for sale near Sevenoaks
Photos
83 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.