The Comparative Analysis :

BMW 428i Convertible xDrive Steptronic (14 - 15) vs. BMW M4 Convertible Competition (16 - 17)

€ 52,900
BMW 428i Convertible xDrive Steptronic (14 - 15) 428i Cabrio
€ 86,100
 BMW M4 Convertible Competition (16 - 17) M4 Convertible Competition Package
€ 52,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 86,100

ⓘ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 428i Cabrio is 1.3 inches shorter, 1.8 inches narrower and 0.3 inches taller than the M4 Convertible Competition Package.
428i Cabrio
M4 Convertible Competition Package
55.1
Blueprint BMW 428i Convertible xDrive Steptronic (14 - 15)
71.9
79.4
54.8
Blueprint BMW M4 Convertible Competition (16 - 17)
73.6
79.3
71.9 in
Width
73.6 in
79.4 in
Width Incl. Mirrors
79.3 in
55.1 in
Height
54.8 in
Blueprint BMW 428i Convertible xDrive Steptronic (14 - 15)
110.6
182.6
Blueprint BMW M4 Convertible Competition (16 - 17)
110.7
183.9
182.6 in
Length
183.9 in
110.6 in
Wheelbase
110.7 in

Vehicle Weight

428i Cabrio
M4 Convertible Competition Package
4068 lb
Curb Weight
4057 lb
4894 lb
Gross Vehicle
Weight
4960 lb
BMW 428i Convertible xDrive Steptronic (14 - 15)
Weight Difference:
11 lb
0.27 %
BMW M4 Convertible Competition (16 - 17)

General

428i Cabrio
M4 Convertible Competition Package
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
6-speed manual transmission

Engine

428i Cabrio
M4 Convertible Competition Package
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 Convertible Competition Package
258 lb‑ft
at 1250 rpm
Max. Torque
406 lb‑ft
at 1850 rpm
428i Cabrio
258 lb‑ft
406 lb‑ft
M4 Convertible Competition Package

Performance

428i Cabrio
M4 Convertible Competition Package
155 mph
Maximum Speed
155 mph
6.5 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

295 ft
0.000 sec

428i Cabrio

62 mph 62
mph

207 ft
0.000 sec

M4 Convertible Competition Package

▶ REPLAY
16.81 lb/hp
Weight-to-Power Ratio
9.14 lb/hp
428i Cabrio
16.81 lb/hp
9.14 lb/hp
M4 Convertible Competition Package

Fuel Economy / Emissions

428i Cabrio
M4 Convertible Competition Package
Fuel Economy
34 mpg
combined
26 mpg
428i Cabrio
34 mpg
26 mpg
M4 Convertible Competition Package
26 mpg
city
19 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
533 mi
Range
409 mi
428i Cabrio
533 mi
409 mi
M4 Convertible Competition Package
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).
172.4 kWh
428i Cabrio
132.6 kWh
172.4 kWh
M4 Convertible Competition Package
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
262 g/mi (NEFZ)
CO2 Emissions
343 g/mi (NEFZ)

Practical Convenience

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