The Comparative Analysis :

BMW 428i Cabrio Steptronic (14 - 15) vs. ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19)

€ 50,400
BMW 428i Cabrio Steptronic (14 - 15) BMW 428i Cabrio
€ 96,100
 ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19) ALPINA B4 S Bi-Turbo Cabrio
€ 50,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 96,100

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

Vehicle Dimensions

Тhere is barely any difference in dimensions between the two vehicles. Both cars are the same width, but the BMW 428i Cabrio is 0.2 cm shorter and 0.4 cm taller.
BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
1384
Blueprint BMW 428i Cabrio Steptronic (14 - 15)
1825
2017
1380
Blueprint ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19)
1825
2025
1825 mm
Width
1825 mm
2017 mm
Width Incl. Mirrors
2025 mm
1384 mm
Height
1380 mm
Blueprint BMW 428i Cabrio Steptronic (14 - 15)
2810
4638
Blueprint ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19)
2810
4640
4638 mm
Length
4640 mm
2810 mm
Wheelbase
2810 mm

Vehicle Weight

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
1775 kg
Kerb Weight
1915 kg
2160 kg
Gross Vehicle
Weight
2300 kg
BMW 428i Cabrio Steptronic (14 - 15)
Weight Difference:
140 kg
7.31 %
ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19)

General

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Straight-four petrol engine with tur­bo­charger
Engine Type
Straight-six petrol engine with two tur­bo­chargers (bi­turbo)
BMW N20
Engine Series
N20-B20
Engine Code
N55-B30
4
Valves
4
4
Cylinders
6
1997 CC
Engine Capacity
2979 CC
242 bhp
at 5000 rpm
Power
446 bhp
at 5500 rpm
BMW 428i Cabrio
242 bhp
446 bhp
ALPINA B4 S Bi-Turbo Cabrio
350 NM
at 1250 rpm
Max. Torque
680 NM
at 3000 rpm
BMW 428i Cabrio
350 NM
680 NM
ALPINA B4 S Bi-Turbo Cabrio

Performance

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
155 mph
Maximum Speed
189 mph
6.4 sec
Acceleration 0 to 62 mph
4.3 sec
62 mph 62
mph

89 m
0.000 sec

BMW 428i Cabrio

62 mph 62
mph

60 m
0.000 sec

ALPINA B4 S Bi-Turbo Cabrio

▶ REPLAY
7.33 kg/bhp
Weight-to-Power Ratio
4.29 kg/bhp
BMW 428i Cabrio
7.33 kg/bhp
4.29 kg/bhp
ALPINA B4 S Bi-Turbo Cabrio

Fuel Economy / Emissions

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Fuel Economy
43 mpg
combined
31 mpg
BMW 428i Cabrio
43 mpg
31 mpg
ALPINA B4 S Bi-Turbo Cabrio
33 mpg
city
23 mpg
No data
motorway
No data
Kraftstoffanzeige
60 L
Fuel Tank Capacity
60 L
Kraftstoffanzeige
565 mi
Range
409 mi
BMW 428i Cabrio
565 mi
409 mi
ALPINA B4 S Bi-Turbo 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).
172.4 kWh
BMW 428i Cabrio
125 kWh
172.4 kWh
ALPINA B4 S Bi-Turbo Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
154 g/km (NEFZ)
CO2 Emissions
207 g/km (NEFZ)

Practical Convenience

BMW 428i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
385 kg
Maximum Payload
385 kg
370 L
Boot Capacity
370 L
No data
Boot Capacity (Seats Down)
No data