The Comparative Analysis :
BMW M4 Cabrio (17 - 18) vs. BMW 420i Cabrio Steptronic (14 - 16)
€ 85,500
€ 46,100
€ 85,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 46,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The M4 Cabrio is a little bigger in every dimension. It's 3.3 cm longer, 4.5 cm wider and 0.2 cm taller than the 420i Cabrio.
M4 Cabrio
420i Cabrio
1386
1870
2014
1384
1825
2017
1870 mm
Width
1825 mm
2014 mm
Width Incl. Mirrors
2017 mm
1386 mm
Height
1384 mm
2812
4671
2810
4638
4671 mm
Length
4638 mm
2812 mm
Wheelbase
2810 mm
Vehicle Weight
M4 Cabrio
420i Cabrio
1825 kg
Kerb Weight
1750 kg
2250 kg
Gross Vehicle
Weight
Weight
2145 kg
Weight Difference:
75 kg
4.11 %
General
M4 Cabrio
420i Cabrio
F83
Generation
F33
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
Rear-wheel drive
6-speed manual transmission
Transmission
8-speed automatic transmission
Engine
M4 Cabrio
420i Cabrio
Straight-six petrol engine with two turbochargers (biturbo)
Engine Type
Straight-four petrol engine with turbocharger
BMW S55
Engine Series
BMW N20
S55-B30
Engine Code
N20-B20
4
Valves
4
6
Cylinders
4
2979 CC
Engine Capacity
1997 CC
425 bhp
at 5500 rpm
Power
181 bhp
at 5000 rpm
M4 Cabrio
425 bhp
181 bhp
420i Cabrio
550 NM
at 1850 rpm
Max. Torque
270 NM
at 1250 rpm
M4 Cabrio
550 NM
270 NM
420i Cabrio
Performance
M4 Cabrio
420i Cabrio
155 mph
Maximum Speed
143 mph
4.6 sec
Acceleration 0 to 62 mph
8.3 sec
62 mph
62
mph
mph
64 m
0.000 sec
M4 Cabrio
62 mph
62
mph
mph
115 m
0.000 sec
420i Cabrio
▶ REPLAY
4.29 kg/bhp
Weight-to-Power Ratio
9.67 kg/bhp
M4 Cabrio
4.29 kg/bhp
9.67 kg/bhp
420i Cabrio
Fuel Economy / Emissions
M4 Cabrio
420i Cabrio
Fuel Economy
30 mpg
combined
44 mpg
M4 Cabrio
30 mpg
44 mpg
420i Cabrio
22 mpg
city
33 mpg
No data
motorway
No data
60 L
Fuel Tank Capacity
60 L
393 mi
Range
583 mi
M4 Cabrio
393 mi
583 mi
420i Cabrio
Environmental Impact
179.9 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
121.2 kWh
M4 Cabrio
179.9 kWh
121.2 kWh
420i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
218 g/km (NEFZ)
CO2 Emissions
149 g/km (NEFZ)
Practical Convenience
M4 Cabrio
420i Cabrio
2
Doors
2
4
No. of Seats
4
425 kg
Maximum Payload
395 kg
370 L
Boot Capacity
370 L
No data
Boot Capacity (Seats Down)
No data
