The Comparative Analysis :

BMW 428i Convertible Steptronic (14 - 15) vs. BMW M4 Convertible (19 - ..)

€ 50,400
BMW 428i Convertible Steptronic (14 - 15) 428i Cabrio
€ 92,500
 BMW M4 Convertible (19 - ..) M4 Cabrio
€ 50,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 92,500

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The 428i Cabrio is a little smaller in every dimension. It's 1.3 inches shorter, 1.8 inches narrower and 0.3 inches lower than the M4 Cabrio.
428i Cabrio
M4 Cabrio
54.5
Blueprint BMW 428i Convertible Steptronic (14 - 15)
71.9
79.4
54.8
Blueprint BMW M4 Convertible (19 - ..)
73.6
79.3
71.9 in
Width
73.6 in
79.4 in
Width Incl. Mirrors
79.3 in
54.5 in
Height
54.8 in
Blueprint BMW 428i Convertible Steptronic (14 - 15)
110.6
182.6
Blueprint BMW M4 Convertible (19 - ..)
110.7
183.9
182.6 in
Length
183.9 in
110.6 in
Wheelbase
110.7 in

Vehicle Weight

428i Cabrio
M4 Cabrio
3913 lb
Curb Weight
4112 lb
4762 lb
Gross Vehicle
Weight
4960 lb
BMW 428i Convertible Steptronic (14 - 15)
Weight Difference:
198 lb
4.82 %
BMW M4 Convertible (19 - ..)

General

428i Cabrio
M4 Cabrio
F33
Generation
F83
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
6-speed manual 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
444 hp
at 7000 rpm
428i Cabrio
242 hp
444 hp
M4 Cabrio
258 lb‑ft
at 1250 rpm
Max. Torque
406 lb‑ft
at 2350 rpm
428i Cabrio
258 lb‑ft
406 lb‑ft
M4 Cabrio

Performance

428i Cabrio
M4 Cabrio
155 mph
Maximum Speed
155 mph
6.4 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

292 ft
0.000 sec

428i Cabrio

62 mph 62
mph

207 ft
0.000 sec

M4 Cabrio

▶ REPLAY
16.17 lb/hp
Weight-to-Power Ratio
9.26 lb/hp
428i Cabrio
16.17 lb/hp
9.26 lb/hp
M4 Cabrio

Fuel Economy / Emissions

428i Cabrio
M4 Cabrio
Fuel Economy
36 mpg
combined
23 mpg
428i Cabrio
36 mpg
23 mpg
M4 Cabrio
27 mpg
city
18 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
565 mi
Range
365 mi
428i Cabrio
565 mi
365 mi
M4 Cabrio
Environmental Impact
125 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).
193.3 kWh
428i Cabrio
125 kWh
193.3 kWh
M4 Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
248 g/mi (NEFZ)
CO2 Emissions
383 g/mi (WLTP)

Practical Convenience

428i Cabrio
M4 Cabrio
2
Doors
2
4
No. of Seats
4
849 lb
Maximum Payload
849 lb
10.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data