The Comparative Analysis :
ALPINA B3 Bi-Turbo Convertible Switch-Tronic (07 - 10) vs. BMW 325i Convertible Automatic (07 - 10)
€ 67,800

€ 48,500

€ 67,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 48,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of the ALPINA B3 Bi-Turbo Convertible and the BMW 325i Cabrio are absolutely identical. Both are 180.3 inches long, 70.2 inches wide and 54.5 inches tall.
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
54.5
70.2
78
54.5
70.2
78.1
70.2 in
Width
70.2 in
78 in
Width Incl. Mirrors
78.1 in
54.5 in
Height
54.5 in
108.7
180.3
108.7
180.3
180.3 in
Length
180.3 in
108.7 in
Wheelbase
108.7 in
Vehicle Weight
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
4068 lb
Curb Weight
3880 lb
4850 lb
Gross Vehicle
Weight
Weight
4663 lb

Weight Difference:
187 lb
4.6 %

General
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
E93
Generation
E93
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
Straight-six gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-six gasoline engine (naturally aspirated engine)
Engine Series
BMW N53
N54-K20
Engine Code
N53-B30

4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
355 hp
at 5500 rpm
Power
215 hp
at 6100 rpm
ALPINA B3 Bi-Turbo Convertible
355 hp
215 hp
BMW 325i Cabrio
369 lb‑ft
at 3800 rpm
Max. Torque
199 lb‑ft
at 2400 rpm
ALPINA B3 Bi-Turbo Convertible
369 lb‑ft
199 lb‑ft
BMW 325i Cabrio
Performance
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
174 mph
Maximum Speed
151 mph
5 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph
62
mph
mph
226 ft
0.000 sec

ALPINA B3 Bi-Turbo Convertible
62 mph
62
mph
mph
371 ft
0.000 sec

BMW 325i Cabrio
▶ REPLAY
11.46 lb/hp
Weight-to-Power Ratio
18.05 lb/hp
ALPINA B3 Bi-Turbo Convertible
11.46 lb/hp
18.05 lb/hp
BMW 325i Cabrio
Fuel Economy / Emissions
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
Fuel Economy
24 mpg
combined
30 mpg
ALPINA B3 Bi-Turbo Convertible
24 mpg
30 mpg
BMW 325i Cabrio
17 mpg
city
22 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
16.6 gal
403 mi
Range
502 mi
ALPINA B3 Bi-Turbo Convertible
403 mi
502 mi
BMW 325i Cabrio
Environmental Impact
183.8 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).
147.7 kWh
ALPINA B3 Bi-Turbo Convertible
183.8 kWh
147.7 kWh
BMW 325i Cabrio
Euro 4
Emission Standard
Euro 4
381 g/mi (NEFZ)
CO2 Emissions
301 g/mi (NEFZ)
Practical Convenience
ALPINA B3 Bi-Turbo Convertible
BMW 325i Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
783 lb
9.9 cu ft
Trunk Volume
9.9 cu ft








No data
Cargo Volume (Seats Down)
No data