The Comparative Analysis :
BMW 428i Convertible xDrive Steptronic (14 - 15) vs. BMW M4 Convertible M DKG (17 - 18)
€ 52,900
€ 89,400
€ 52,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 89,400
ⓘ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 428i Cabrio is 1.3 inches shorter, 1.8 inches narrower and 0.5 inches taller than the M4 Cabrio.
428i Cabrio
M4 Cabrio
55.1
71.9
79.4
54.6
73.6
79.3
71.9 in
Width
73.6 in
79.4 in
Width Incl. Mirrors
79.3 in
55.1 in
Height
54.6 in
110.6
182.6
110.7
183.9
182.6 in
Length
183.9 in
110.6 in
Wheelbase
110.7 in
Vehicle Weight
428i Cabrio
M4 Cabrio
4068 lb
Curb Weight
4112 lb
4894 lb
Gross Vehicle
Weight
Weight
4960 lb
Weight Difference:
44 lb
1.07 %
General
428i Cabrio
M4 Cabrio
F33
Generation
F83
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
428i Cabrio
M4 Cabrio
Straight-four gasoline engine with turbocharger
Engine Type
Straight-six gasoline engine with two turbochargers (biturbo)
BMW N20
Engine Series
BMW S55
N20-B20
Engine Code
S55-B30
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
242 hp
at 5000 rpm
Power
425 hp
at 5500 rpm
428i Cabrio
242 hp
425 hp
M4 Cabrio
258 lb‑ft
at 1250 rpm
Max. Torque
406 lb‑ft
at 1850 rpm
428i Cabrio
258 lb‑ft
406 lb‑ft
M4 Cabrio
Performance
428i Cabrio
M4 Cabrio
155 mph
Maximum Speed
155 mph
6.5 sec
Acceleration 0 to 62 mph
4.4 sec
62 mph
62
mph
mph
295 ft
0.000 sec
428i Cabrio
62 mph
62
mph
mph
200 ft
0.000 sec
M4 Cabrio
▶ REPLAY
16.81 lb/hp
Weight-to-Power Ratio
9.68 lb/hp
428i Cabrio
16.81 lb/hp
9.68 lb/hp
M4 Cabrio
Fuel Economy / Emissions
428i Cabrio
M4 Cabrio
Fuel Economy
34 mpg
combined
27 mpg
428i Cabrio
34 mpg
27 mpg
M4 Cabrio
26 mpg
city
20 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
15.9 gal
533 mi
Range
429 mi
428i Cabrio
533 mi
429 mi
M4 Cabrio
Environmental Impact
132.6 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).
164.8 kWh
428i Cabrio
132.6 kWh
164.8 kWh
M4 Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
262 g/mi (NEFZ)
CO2 Emissions
327 g/mi (NEFZ)
Practical Convenience
428i Cabrio
M4 Cabrio
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
849 lb
10.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data
