The Comparative Analysis :
BMW 420d Convertible (15 - 17) vs. ALPINA B3 S Bi-Turbo Convertible Switch-Tronic (10 - 13)
€ 47,900
BMW 420d Cabrio € 70,600
ALPINA B3 S Bi-Turbo Convertible
€ 47,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 70,600
ⓘ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 BMW 420d Cabrio is 0.6 inches longer and 1.7 inches wider.
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
71.9 in
Width
70.2 in
79.4 in
Width Incl. Mirrors
78 in
54.5 in
Height
54.5 in
182.6 in
Length
182 in
110.6 in
Wheelbase
108.7 in
Vehicle Weight
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
3913 lb
Curb Weight
4068 lb
4784 lb
Gross Vehicle
Weight
Weight
4806 lb
Weight Difference:
154 lb
3.79 %
General
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
F33
Generation
E93
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
6-speed automatic transmission
Engine
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
Straight-four diesel engine with turbocharger
Engine Type
Straight-six gasoline engine with two turbochargers (biturbo)
BMW B47
Engine Series
B47-D20
Engine Code
N54-K30
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
187 hp
at 4000 rpm
Power
395 hp
at 6000 rpm
BMW 420d Cabrio
187 hp
395 hp
ALPINA B3 S Bi-Turbo Convertible
295 lb‑ft
at 1750 rpm
Max. Torque
398 lb‑ft
at 4500 rpm
BMW 420d Cabrio
295 lb‑ft
398 lb‑ft
ALPINA B3 S Bi-Turbo Convertible
Performance
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
146 mph
Maximum Speed
185 mph
8.1 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
371 ft
0.000 sec
BMW 420d Cabrio
62 mph
62
mph
mph
223 ft
0.000 sec
ALPINA B3 S Bi-Turbo Convertible
▶ REPLAY
20.93 lb/hp
Weight-to-Power Ratio
10.3 lb/hp
BMW 420d Cabrio
20.93 lb/hp
10.3 lb/hp
ALPINA B3 S Bi-Turbo Convertible
Fuel Economy / Emissions
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
Fuel Economy
49 mpg
combined
24 mpg
BMW 420d Cabrio
49 mpg
24 mpg
ALPINA B3 S Bi-Turbo Convertible
41 mpg
city
17 mpg
No data
highway
No data
15.1 gal
Fuel Tank Capacity
16.6 gal
738 mi
Range
403 mi
BMW 420d Cabrio
738 mi
403 mi
ALPINA B3 S Bi-Turbo Convertible
Environmental Impact
98.8 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).
183.8 kWh
BMW 420d Cabrio
98.8 kWh
183.8 kWh
ALPINA B3 S Bi-Turbo Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 5
204 g/mi (NEFZ)
CO2 Emissions
362 g/mi (NEFZ)
Practical Convenience
BMW 420d Cabrio
ALPINA B3 S Bi-Turbo Convertible
2
Doors
2
4
No. of Seats
4
871 lb
Maximum Payload
739 lb
10.5 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data