The Comparative Analysis :
ALPINA B4 S Bi-Turbo Convertible Edition 99 Switch-Tronic (18 - 19) vs. BMW 318i Convertible (10 - 14)
€ 96,100

€ 39,100

€ 96,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,100
ⓘ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 ALPINA B4 S Bi-Turbo Cabrio is 1.1 inches longer, 1.7 inches wider and 0.2 inches lower than the BMW 318i Cabrio.
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
54.3
71.9
79.7
54.5
70.2
78.1
71.9 in
Width
70.2 in
79.7 in
Width Incl. Mirrors
78.1 in
54.3 in
Height
54.5 in
110.6
182.7
108.7
181.6
182.7 in
Length
181.6 in
110.6 in
Wheelbase
108.7 in
Vehicle Weight
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
4222 lb
Curb Weight
3682 lb
5071 lb
Gross Vehicle
Weight
Weight
4464 lb

Weight Difference:
540 lb
12.79 %

General
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
F33
Generation
E93
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
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
Straight-six gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-four gasoline engine (naturally aspirated engine)
Engine Series
BMW N43
N55-B30
Engine Code
N43-B20

4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
446 hp
at 5500 rpm
Power
141 hp
at 6000 rpm
ALPINA B4 S Bi-Turbo Cabrio
446 hp
141 hp
BMW 318i Cabrio
502 lb‑ft
at 3000 rpm
Max. Torque
140 lb‑ft
at 4250 rpm
ALPINA B4 S Bi-Turbo Cabrio
502 lb‑ft
140 lb‑ft
BMW 318i Cabrio
Performance
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
189 mph
Maximum Speed
130 mph
4.3 sec
Acceleration 0 to 62 mph
10.3 sec
62 mph
62
mph
mph
197 ft
0.000 sec

ALPINA B4 S Bi-Turbo Cabrio
62 mph
62
mph
mph
469 ft
0.000 sec

BMW 318i Cabrio
▶ REPLAY
9.47 lb/hp
Weight-to-Power Ratio
26.11 lb/hp
ALPINA B4 S Bi-Turbo Cabrio
9.47 lb/hp
26.11 lb/hp
BMW 318i Cabrio
Fuel Economy / Emissions
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
Fuel Economy
26 mpg
combined
36 mpg
ALPINA B4 S Bi-Turbo Cabrio
26 mpg
36 mpg
BMW 318i Cabrio
19 mpg
city
28 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
16.6 gal
409 mi
Range
593 mi
ALPINA B4 S Bi-Turbo Cabrio
409 mi
593 mi
BMW 318i Cabrio
Environmental Impact
172.4 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).
125 kWh
ALPINA B4 S Bi-Turbo Cabrio
172.4 kWh
125 kWh
BMW 318i Cabrio
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 5
333 g/mi (NEFZ)
CO2 Emissions
248 g/mi (NEFZ)
Practical Convenience
ALPINA B4 S Bi-Turbo Cabrio
BMW 318i Cabrio
2
Doors
2
4
No. of Seats
4
849 lb
Maximum Payload
783 lb
10.5 cu ft
Trunk Volume
9.9 cu ft









No data
Cargo Volume (Seats Down)
No data