The Comparative Analysis :
BMW 425d Cabrio (14 - 15) vs. ALPINA B4 S Bi-Turbo Cabrio Edition 99 Switch-Tronic (18 - 19)
€ 49,800

€ 96,100

€ 49,800
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 425d Cabrio is 0.2 cm shorter and 0.4 cm taller.
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
1384
1825
2017
1380
1825
2025
1825 mm
Width
1825 mm
2017 mm
Width Incl. Mirrors
2025 mm
1384 mm
Height
1380 mm
2810
4638
2810
4640
4638 mm
Length
4640 mm
2810 mm
Wheelbase
2810 mm
Vehicle Weight
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
1715 kg
Kerb Weight
1915 kg
1790 kg
Gross Vehicle
Weight
Weight
2300 kg

Weight Difference:
200 kg
10.44 %

General
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Rear-wheel drive

6-speed manual transmission
Transmission
8-speed automatic transmission
Engine
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
Straight-six petrol engine with two turbochargers (biturbo)
BMW N47
Engine Series
N47-D20
Engine Code
N55-B30

4
Valves
4
4
Cylinders
6
1995 CC
Engine Capacity
2979 CC
215 bhp
at 4400 rpm
Power
446 bhp
at 5500 rpm
BMW 425d Cabrio
215 bhp
446 bhp
ALPINA B4 S Bi-Turbo Cabrio
450 NM
at 1500 rpm
Max. Torque
680 NM
at 3000 rpm
BMW 425d Cabrio
450 NM
680 NM
ALPINA B4 S Bi-Turbo Cabrio
Performance
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
150 mph
Maximum Speed
189 mph
7.3 sec
Acceleration 0 to 62 mph
4.3 sec
62 mph
62
mph
mph
101 m
0.000 sec

BMW 425d Cabrio
62 mph
62
mph
mph
60 m
0.000 sec

ALPINA B4 S Bi-Turbo Cabrio
▶ REPLAY
7.98 kg/bhp
Weight-to-Power Ratio
4.29 kg/bhp
BMW 425d Cabrio
7.98 kg/bhp
4.29 kg/bhp
ALPINA B4 S Bi-Turbo Cabrio
Fuel Economy / Emissions
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Fuel Economy
54 mpg
combined
31 mpg
BMW 425d Cabrio
54 mpg
31 mpg
ALPINA B4 S Bi-Turbo Cabrio
43 mpg
city
23 mpg
No data
motorway
No data
57 L
Fuel Tank Capacity
60 L
681 mi
Range
409 mi
BMW 425d Cabrio
681 mi
409 mi
ALPINA B4 S Bi-Turbo Cabrio
Environmental Impact
107 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).
172.4 kWh
BMW 425d Cabrio
107 kWh
172.4 kWh
ALPINA B4 S Bi-Turbo Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
138 g/km (NEFZ)
CO2 Emissions
207 g/km (NEFZ)
Practical Convenience
BMW 425d Cabrio
ALPINA B4 S Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
75 kg
Maximum Payload
385 kg
370 L
Boot Capacity
370 L










No data
Boot Capacity (Seats Down)
No data