The Comparative Analysis :
BMW 420i Convertible (16 - 17) vs. BMW M3 Convertible M DKG (08 - 13)
€ 44,700
€ 79,100
€ 44,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 79,100
ⓘ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 420i Cabrio is 0.9 inches longer, 0.8 inches wider and 0.3 inches lower than the M3 Cabrio.
420i Cabrio
M3 Cabrio
54.5
71.9
79.4
54.8
71
77.8
71.9 in
Width
71 in
79.4 in
Width Incl. Mirrors
77.8 in
54.5 in
Height
54.8 in
110.6
182.6
108.7
181.7
182.6 in
Length
181.7 in
110.6 in
Wheelbase
108.7 in
Vehicle Weight
420i Cabrio
M3 Cabrio
3913 lb
Curb Weight
4200 lb
4784 lb
Gross Vehicle
Weight
Weight
5027 lb
Weight Difference:
287 lb
6.83 %
General
420i Cabrio
M3 Cabrio
F33
Generation
E93
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
7-speed dual clutch transmission
Engine
420i Cabrio
M3 Cabrio
Straight-four gasoline engine with turbocharger
Engine Type
V8 gasoline engine (naturally aspirated engine)
BMW B48
Engine Series
BMW S65
B48-B20
Engine Code
S65-B40
4
Valves
4
4
Cylinders
8
2 L / 98 cu in
Displacement
4 L / 196 cu in
181 hp
at 5000 rpm
Power
414 hp
at 8300 rpm
420i Cabrio
181 hp
414 hp
M3 Cabrio
199 lb‑ft
at 1350 rpm
Max. Torque
295 lb‑ft
at 3900 rpm
420i Cabrio
199 lb‑ft
295 lb‑ft
M3 Cabrio
Performance
420i Cabrio
M3 Cabrio
143 mph
Maximum Speed
155 mph
8.2 sec
Acceleration 0 to 62 mph
5.1 sec
62 mph
62
mph
mph
374 ft
0.000 sec
420i Cabrio
62 mph
62
mph
mph
233 ft
0.000 sec
M3 Cabrio
▶ REPLAY
21.62 lb/hp
Weight-to-Power Ratio
10.14 lb/hp
420i Cabrio
21.62 lb/hp
10.14 lb/hp
M3 Cabrio
Fuel Economy / Emissions
420i Cabrio
M3 Cabrio
Fuel Economy
38 mpg
combined
19 mpg
420i Cabrio
38 mpg
19 mpg
M3 Cabrio
29 mpg
city
14 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
16.6 gal
601 mi
Range
318 mi
420i Cabrio
601 mi
318 mi
M3 Cabrio
Environmental Impact
117.5 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).
233 kWh
420i Cabrio
117.5 kWh
233 kWh
M3 Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 4
233 g/mi (NEFZ)
CO2 Emissions
472 g/mi (NEFZ)
Practical Convenience
420i Cabrio
M3 Cabrio
2
Doors
2
4
No. of Seats
4
871 lb
Maximum Payload
827 lb
10.5 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data
