BMW 4 Series Convertible vs BMW 4 Series Coupé

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4 Series Convertible compared with 4 Series Coupé

	BMW4 Series Convertible	BMW4 Series Coupé
Overview
Released
Released	March 2021	October 2020
Performance
Powertrain
Powertrain	Petrol, Mild hybrid	Petrol, Mild hybrid
Power
Power	181–386 bhp	181–386 bhp
0–62 mph
0–62 mph	4.8–8.2 s	4.4–7.5 s (better)
Top speed
Top speed	147–155 mph	149–155 mph
Engine or motors
Engine or motors	420i: 1,998 cc four-cylinder turbo petrol, 135 kW (184 hp); M440i xDrive: 2,998 cc six-cylinder turbo petrol with 48 V mild hybrid, 288 kW (392 hp); bhp converted from BMW's kW figures	420i: 1,998 cc four-cylinder turbo petrol, 135 kW (184 hp); M440i xDrive: 2,998 cc six-cylinder turbo petrol with 48 V mild hybrid, 288 kW (392 hp); bhp converted from BMW's kW figures
Torque
Torque	300 Nm (420i), 540 Nm (M440i xDrive)	300 Nm (420i), 540 Nm (M440i xDrive)
Gearbox
Gearbox	8-speed automatic	8-speed automatic
Drive
Drive	Rear-wheel drive (420i) or all-wheel drive (M440i xDrive)	Rear-wheel drive (420i) or all-wheel drive (M440i xDrive)
Range and charging
Economy (WLTP)
Economy (WLTP)	39.2–41.5 mpg	39.8–44.8 mpg (better)
Efficiency
Efficiency	WLTP combined: 40.9–41.5 mpg (420i), 36.7–39.2 mpg (M440i xDrive)	WLTP combined: 42.8–44.8 mpg (420i, depending on trim), 36.7–39.8 mpg (M440i xDrive)
CO2 emissions
CO2 emissions	154–158 g/km (420i), 164–175 g/km (M440i xDrive), WLTP combined	144–149 g/km (420i), 162–174 g/km (M440i xDrive), WLTP combined
Practicality
Body
Body	Convertible	Coupé
Seats
Seats	4	4
Boot
Boot	385 litres	440 litres (better)
Length
Length	4,768 mm	4,768 mm
Width
Width	1,852 mm	1,852 mm
Boot
Boot	385 litres	440 litres
Towing
Towing	Up to 1,600 kg braked (420i), 1,800 kg (M440i xDrive)	Up to 1,600 kg braked (420i), 1,800 kg (M440i xDrive)
Size
Size	4,768 mm long (4,770 mm M440i), 1,852 mm wide (2,081 mm with mirrors), 1,384 mm high (1,394 mm M440i); 2,851 mm wheelbase; EC unladen weight including a 75 kg driver is 1,765 kg (420i), 2,000 kg (current M440i xDrive)	4,768 mm long (4,770 mm M440i), 1,852 mm wide (2,081 mm with mirrors), 1,383 mm high (1,393 mm M440i); 2,851 mm wheelbase; EC unladen weight including a 75 kg driver is 1,600 kg (420i) or 1,845 kg (current M440i xDrive)