The Comparative Analysis :

ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13) vs. BMW 428i Convertible Steptronic (14 - 15)

€ 70,600
ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13) ALPINA B3 S Bi-Turbo Convertible
€ 50,400
 BMW 428i Convertible Steptronic (14 - 15) BMW 428i Cabrio
€ 70,600
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

The dimensions of these vehicles differ a little. Both cars are the same height, but the ALPINA B3 S Bi-Turbo Convertible is 0.6 inches shorter and 1.7 inches narrower.
ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
54.5
Blueprint ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13)
70.2
78
54.5
Blueprint BMW 428i Convertible Steptronic (14 - 15)
71.9
79.4
70.2 in
Width
71.9 in
78 in
Width Incl. Mirrors
79.4 in
54.5 in
Height
54.5 in
Blueprint ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13)
108.7
182
Blueprint BMW 428i Convertible Steptronic (14 - 15)
110.6
182.6
182 in
Length
182.6 in
108.7 in
Wheelbase
110.6 in

Vehicle Weight

ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
4068 lb
Curb Weight
3913 lb
4806 lb
Gross Vehicle
Weight
4762 lb
ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13)
Weight Difference:
154 lb
3.79 %
BMW 428i Convertible Steptronic (14 - 15)

General

ALPINA B3 S Bi-Turbo Convertible
BMW 428i 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

ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-four gasoline engine with tur­bo­charger
Engine Series
BMW N20
N54-K30
Engine Code
N20-B20
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
395 hp
at 6000 rpm
Power
242 hp
at 5000 rpm
ALPINA B3 S Bi-Turbo Convertible
395 hp
242 hp
BMW 428i Cabrio
398 lb‑ft
at 4500 rpm
Max. Torque
258 lb‑ft
at 1250 rpm
ALPINA B3 S Bi-Turbo Convertible
398 lb‑ft
258 lb‑ft
BMW 428i Cabrio

Performance

ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
185 mph
Maximum Speed
155 mph
4.9 sec
Acceleration 0 to 62 mph
6.4 sec
62 mph 62
mph

223 ft
0.000 sec

ALPINA B3 S Bi-Turbo Convertible

62 mph 62
mph

292 ft
0.000 sec

BMW 428i Cabrio

▶ REPLAY
10.3 lb/hp
Weight-to-Power Ratio
16.17 lb/hp
ALPINA B3 S Bi-Turbo Convertible
10.3 lb/hp
16.17 lb/hp
BMW 428i Cabrio

Fuel Economy / Emissions

ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
Fuel Economy
24 mpg
combined
36 mpg
ALPINA B3 S Bi-Turbo Convertible
24 mpg
36 mpg
BMW 428i Cabrio
17 mpg
city
27 mpg
No data
highway
No data
Kraftstoffanzeige
16.6 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
403 mi
Range
565 mi
ALPINA B3 S Bi-Turbo Convertible
403 mi
565 mi
BMW 428i 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).
125 kWh
ALPINA B3 S Bi-Turbo Convertible
183.8 kWh
125 kWh
BMW 428i Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
362 g/mi (NEFZ)
CO2 Emissions
248 g/mi (NEFZ)

Practical Convenience

ALPINA B3 S Bi-Turbo Convertible
BMW 428i Cabrio
2
Doors
2
4
No. of Seats
4
739 lb
Maximum Payload
849 lb
9.9 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data