The Comparative Analysis :
BMW M3 Cabrio (08 - 13) vs. BMW 420i Cabrio (16 - 17)
€ 75,300
€ 44,700
€ 75,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 44,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ a little. The M3 Cabrio is 2.3 cm shorter, 2.1 cm narrower and 0.8 cm taller than the 420i Cabrio.
M3 Cabrio
420i Cabrio
1392
1804
1976
1384
1825
2017
1804 mm
Width
1825 mm
1976 mm
Width Incl. Mirrors
2017 mm
1392 mm
Height
1384 mm
2761
4615
2810
4638
4615 mm
Length
4638 mm
2761 mm
Wheelbase
2810 mm
Vehicle Weight
M3 Cabrio
420i Cabrio
1885 kg
Kerb Weight
1775 kg
2280 kg
Gross Vehicle
Weight
Weight
2170 kg
Weight Difference:
110 kg
5.84 %
General
M3 Cabrio
420i Cabrio
E93
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
6-speed manual transmission
Engine
M3 Cabrio
420i Cabrio
V8 petrol engine (naturally aspirated engine)
Engine Type
Straight-four petrol engine with turbocharger
BMW S65
Engine Series
BMW B48
S65-B40
Engine Code
B48-B20

4
Valves
4
8
Cylinders
4
3999 CC
Engine Capacity
1997 CC
414 bhp
at 8300 rpm
Power
181 bhp
at 5000 rpm
M3 Cabrio
414 bhp
181 bhp
420i Cabrio
400 NM
at 3900 rpm
Max. Torque
270 NM
at 1350 rpm
M3 Cabrio
400 NM
270 NM
420i Cabrio
Performance
M3 Cabrio
420i Cabrio
155 mph
Maximum Speed
143 mph
5.3 sec
Acceleration 0 to 62 mph
8.2 sec
62 mph
62
mph
mph
74 m
0.000 sec
M3 Cabrio
62 mph
62
mph
mph
114 m
0.000 sec
420i Cabrio
▶ REPLAY
4.55 kg/bhp
Weight-to-Power Ratio
9.81 kg/bhp
M3 Cabrio
4.55 kg/bhp
9.81 kg/bhp
420i Cabrio
Fuel Economy / Emissions
M3 Cabrio
420i Cabrio
Fuel Economy
22 mpg
combined
46 mpg
M3 Cabrio
22 mpg
46 mpg
420i Cabrio
15 mpg
city
35 mpg
No data
motorway
No data
63 L
Fuel Tank Capacity
60 L
303 mi
Range
601 mi
M3 Cabrio
303 mi
601 mi
420i Cabrio
Environmental Impact
244.5 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).
117.5 kWh
M3 Cabrio
244.5 kWh
117.5 kWh
420i Cabrio
Euro 4
Emission Standard
Euro 6b (NEFZ)
309 g/km (NEFZ)
CO2 Emissions
145 g/km (NEFZ)
Practical Convenience
M3 Cabrio
420i Cabrio
2
Doors
2
4
No. of Seats
4
395 kg
Maximum Payload
395 kg
350 L
Boot Capacity
370 L









No data
Boot Capacity (Seats Down)
No data














