The Comparative Analysis :
ALPINA B3 Bi-Turbo Coupé Switch-Tronic (07 - 10) vs. BMW 420i Coupé xDrive Steptronic (16 - 17)
€ 60,800

€ 42,200

€ 60,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 42,200
ⓘ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 ALPINA B3 Bi-Turbo Coupé is 5.8 cm shorter, 4.3 cm narrower and 0.3 cm taller than the BMW 420i Coupé.
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
1395
1782
1982
1392
1825
2017
1782 mm
Width
1825 mm
1982 mm
Width Incl. Mirrors
2017 mm
1395 mm
Height
1392 mm
2760
4580
2810
4638
4580 mm
Length
4638 mm
2760 mm
Wheelbase
2810 mm
Vehicle Weight
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
1635 kg
Kerb Weight
1645 kg
2040 kg
Gross Vehicle
Weight
Weight
2090 kg

Weight Difference:
10 kg
0.61 %

General
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
E92
Generation
F32
Coupe
Car Body Style
Coupe
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Permanent all-wheel drive

6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
Straight-six petrol engine with two turbochargers (biturbo)
Engine Type
Straight-four petrol engine with turbocharger
Engine Series
BMW B48
N54-K20
Engine Code
B48-B20

4
Valves
4
6
Cylinders
4
2979 CC
Engine Capacity
1997 CC
355 bhp
at 5500 rpm
Power
181 bhp
at 5000 rpm
ALPINA B3 Bi-Turbo Coupé
355 bhp
181 bhp
BMW 420i Coupé
500 NM
at 3800 rpm
Max. Torque
270 NM
at 1350 rpm
ALPINA B3 Bi-Turbo Coupé
500 NM
270 NM
BMW 420i Coupé
Performance
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
177 mph
Maximum Speed
144 mph
4.8 sec
Acceleration 0 to 62 mph
7.8 sec
62 mph
62
mph
mph
67 m
0.000 sec

ALPINA B3 Bi-Turbo Coupé
62 mph
62
mph
mph
108 m
0.000 sec

BMW 420i Coupé
▶ REPLAY
4.61 kg/bhp
Weight-to-Power Ratio
9.09 kg/bhp
ALPINA B3 Bi-Turbo Coupé
4.61 kg/bhp
9.09 kg/bhp
BMW 420i Coupé
Fuel Economy / Emissions
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
Fuel Economy
29 mpg
combined
48 mpg
ALPINA B3 Bi-Turbo Coupé
29 mpg
48 mpg
BMW 420i Coupé
20 mpg
city
37 mpg
No data
motorway
No data
63 L
Fuel Tank Capacity
60 L
403 mi
Range
632 mi
ALPINA B3 Bi-Turbo Coupé
403 mi
632 mi
BMW 420i Coupé
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).
111.8 kWh
ALPINA B3 Bi-Turbo Coupé
183.8 kWh
111.8 kWh
BMW 420i Coupé
Euro 4
Emission Standard
Euro 6b (NEFZ)
232 g/km (NEFZ)
CO2 Emissions
137 g/km (NEFZ)
Practical Convenience
ALPINA B3 Bi-Turbo Coupé
BMW 420i Coupé
2
Doors
2
4
No. of Seats
4
405 kg
Maximum Payload
445 kg
430 L
Boot Capacity
445 L









No data
Boot Capacity (Seats Down)
No data