The Comparative Analysis :

ALPINA B4 S Bi-Turbo Convertible Switch-Tronic (17 - 18) vs. BMW 428i Convertible Steptronic (14 - 15)

€ 81,400
ALPINA B4 S Bi-Turbo Convertible Switch-Tronic (17 - 18) ALPINA B4 S Bi-Turbo Cabrio
€ 50,400
 BMW 428i Convertible Steptronic (14 - 15) BMW 428i Cabrio
€ 81,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 50,400

ⓘ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 ALPINA B4 S Bi-Turbo Cabrio is 0.1 inches longer and 0.2 inches lower.
ALPINA B4 S Bi-Turbo Cabrio
BMW 428i Cabrio
54.3
Blueprint ALPINA B4 S Bi-Turbo Convertible Switch-Tronic (17 - 18)
71.9
79.7
54.5
Blueprint BMW 428i Convertible Steptronic (14 - 15)
71.9
79.4
71.9 in
Width
71.9 in
79.7 in
Width Incl. Mirrors
79.4 in
54.3 in
Height
54.5 in
Blueprint ALPINA B4 S Bi-Turbo Convertible Switch-Tronic (17 - 18)
110.6
182.7
Blueprint BMW 428i Convertible Steptronic (14 - 15)
110.6
182.6
182.7 in
Length
182.6 in
110.6 in
Wheelbase
110.6 in

Vehicle Weight

ALPINA B4 S Bi-Turbo Cabrio
BMW 428i Cabrio
4222 lb
Curb Weight
3913 lb
5071 lb
Gross Vehicle
Weight
4762 lb
ALPINA B4 S Bi-Turbo Convertible Switch-Tronic (17 - 18)
Weight Difference:
309 lb
7.32 %
BMW 428i Convertible Steptronic (14 - 15)

General

ALPINA B4 S Bi-Turbo Cabrio
BMW 428i Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

ALPINA B4 S Bi-Turbo Cabrio
BMW 428i Cabrio
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-four gasoline engine with tur­bo­charger
Engine Series
BMW N20
N55-B30
Engine Code
N20-B20
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
434 hp
at 5500 rpm
Power
242 hp
at 5000 rpm
ALPINA B4 S Bi-Turbo Cabrio
434 hp
242 hp
BMW 428i Cabrio
487 lb‑ft
at 3000 rpm
Max. Torque
258 lb‑ft
at 1250 rpm
ALPINA B4 S Bi-Turbo Cabrio
487 lb‑ft
258 lb‑ft
BMW 428i Cabrio

Performance

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

197 ft
0.000 sec

ALPINA B4 S Bi-Turbo Cabrio

62 mph 62
mph

292 ft
0.000 sec

BMW 428i Cabrio

▶ REPLAY
9.73 lb/hp
Weight-to-Power Ratio
16.17 lb/hp
ALPINA B4 S Bi-Turbo Cabrio
9.73 lb/hp
16.17 lb/hp
BMW 428i Cabrio

Fuel Economy / Emissions

ALPINA B4 S Bi-Turbo Cabrio
BMW 428i Cabrio
Fuel Economy
28 mpg
combined
36 mpg
ALPINA B4 S Bi-Turbo Cabrio
28 mpg
36 mpg
BMW 428i Cabrio
21 mpg
city
27 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
449 mi
Range
565 mi
ALPINA B4 S Bi-Turbo Cabrio
449 mi
565 mi
BMW 428i Cabrio
Environmental Impact
157.2 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).
125 kWh
ALPINA B4 S Bi-Turbo Cabrio
157.2 kWh
125 kWh
BMW 428i Cabrio
Euro 6c (NEFZ)
Emission Standard
Euro 6b (NEFZ)
306 g/mi (NEFZ)
CO2 Emissions
248 g/mi (NEFZ)

Practical Convenience

ALPINA B4 S Bi-Turbo Cabrio
BMW 428i 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