The Comparative Analysis :
BMW 325i Convertible Automatic (07 - 10) vs. ALPINA B4 S Bi-Turbo Convertible Edition 99 Switch-Tronic (18 - 19)
€ 48,500

€ 96,100

€ 48,500
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
The dimensions of these vehicles differ slightly. The BMW 325i Cabrio is 2.4 inches shorter, 1.7 inches narrower and 0.2 inches taller than the ALPINA B4 S Bi-Turbo Cabrio.
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
54.5
70.2
78.1
54.3
71.9
79.7
70.2 in
Width
71.9 in
78.1 in
Width Incl. Mirrors
79.7 in
54.5 in
Height
54.3 in
108.7
180.3
110.6
182.7
180.3 in
Length
182.7 in
108.7 in
Wheelbase
110.6 in
Vehicle Weight
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
3880 lb
Curb Weight
4222 lb
4663 lb
Gross Vehicle
Weight
Weight
5071 lb

Weight Difference:
342 lb
8.1 %

General
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
E93
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Straight-six gasoline engine (naturally aspirated engine)
Engine Type
Straight-six gasoline engine with two turbochargers (biturbo)
BMW N53
Engine Series
N53-B30
Engine Code
N55-B30

4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
215 hp
at 6100 rpm
Power
446 hp
at 5500 rpm
BMW 325i Cabrio
215 hp
446 hp
ALPINA B4 S Bi-Turbo Cabrio
199 lb‑ft
at 2400 rpm
Max. Torque
502 lb‑ft
at 3000 rpm
BMW 325i Cabrio
199 lb‑ft
502 lb‑ft
ALPINA B4 S Bi-Turbo Cabrio
Performance
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
151 mph
Maximum Speed
189 mph
8.1 sec
Acceleration 0 to 62 mph
4.3 sec
62 mph
62
mph
mph
371 ft
0.000 sec

BMW 325i Cabrio
62 mph
62
mph
mph
197 ft
0.000 sec

ALPINA B4 S Bi-Turbo Cabrio
▶ REPLAY
18.05 lb/hp
Weight-to-Power Ratio
9.47 lb/hp
BMW 325i Cabrio
18.05 lb/hp
9.47 lb/hp
ALPINA B4 S Bi-Turbo Cabrio
Fuel Economy / Emissions
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
Fuel Economy
30 mpg
combined
26 mpg
BMW 325i Cabrio
30 mpg
26 mpg
ALPINA B4 S Bi-Turbo Cabrio
22 mpg
city
19 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
15.9 gal
502 mi
Range
409 mi
BMW 325i Cabrio
502 mi
409 mi
ALPINA B4 S Bi-Turbo Cabrio
Environmental Impact
147.7 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 325i Cabrio
147.7 kWh
172.4 kWh
ALPINA B4 S Bi-Turbo Cabrio
Euro 4
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
301 g/mi (NEFZ)
CO2 Emissions
333 g/mi (NEFZ)
Practical Convenience
BMW 325i Cabrio
ALPINA B4 S Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
849 lb
9.9 cu ft
Trunk Volume
10.5 cu ft









No data
Cargo Volume (Seats Down)
No data