The Comparative Analysis :

BMW 420i Coupé Steptronic (13 - 16) vs. ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)

€ 38,900
BMW 420i Coupé Steptronic (13 - 16) BMW 420i Coupé
€ 75,300
 ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19) ALPINA B4 S Bi-Turbo Coupé
€ 38,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 75,300

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

Тhere is barely any difference in dimensions between the two vehicles. Both cars are the same width, but the BMW 420i Coupé is 0.2 cm shorter and 0.4 cm taller.
BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
1377
Blueprint BMW 420i Coupé Steptronic (13 - 16)
1825
2017
1373
Blueprint ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)
1825
2025
1825 mm
Width
1825 mm
2017 mm
Width Incl. Mirrors
2025 mm
1377 mm
Height
1373 mm
Blueprint BMW 420i Coupé Steptronic (13 - 16)
2810
4638
Blueprint ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)
2810
4640
4638 mm
Length
4640 mm
2810 mm
Wheelbase
2810 mm

Vehicle Weight

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
1525 kg
Kerb Weight
1690 kg
1970 kg
Gross Vehicle
Weight
2135 kg
BMW 420i Coupé Steptronic (13 - 16)
Weight Difference:
165 kg
9.76 %
ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)

General

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
F32
Generation
F32
Coupe
Car Body Style
Coupe
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
Straight-four petrol engine with tur­bo­charger
Engine Type
Straight-six petrol engine with two tur­bo­chargers (bi­turbo)
BMW N20
Engine Series
N20-B20
Engine Code
N55-B30
4
Valves
4
4
Cylinders
6
1997 CC
Engine Capacity
2979 CC
181 bhp
at 5000 rpm
Power
434 bhp
at 5500 rpm
BMW 420i Coupé
181 bhp
434 bhp
ALPINA B4 S Bi-Turbo Coupé
270 NM
at 1250 rpm
Max. Torque
660 NM
at 3000 rpm
BMW 420i Coupé
270 NM
660 NM
ALPINA B4 S Bi-Turbo Coupé

Performance

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
147 mph
Maximum Speed
190 mph
7.5 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph 62
mph

104 m
0.000 sec

BMW 420i Coupé

62 mph 62
mph

58 m
0.000 sec

ALPINA B4 S Bi-Turbo Coupé

▶ REPLAY
8.43 kg/bhp
Weight-to-Power Ratio
3.89 kg/bhp
BMW 420i Coupé
8.43 kg/bhp
3.89 kg/bhp
ALPINA B4 S Bi-Turbo Coupé

Fuel Economy / Emissions

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
Fuel Economy
47 mpg
combined
31 mpg
BMW 420i Coupé
47 mpg
31 mpg
ALPINA B4 S Bi-Turbo Coupé
35 mpg
city
23 mpg
No data
motorway
No data
Kraftstoffanzeige
60 L
Fuel Tank Capacity
60 L
Kraftstoffanzeige
621 mi
Range
409 mi
BMW 420i Coupé
621 mi
409 mi
ALPINA B4 S Bi-Turbo Coupé
Environmental Impact
113.6 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).
172.4 kWh
BMW 420i Coupé
113.6 kWh
172.4 kWh
ALPINA B4 S Bi-Turbo Coupé
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP (WLTP)
139 g/km (NEFZ)
CO2 Emissions
207 g/km (NEFZ)

Practical Convenience

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
2
Doors
2
4
No. of Seats
4
445 kg
Maximum Payload
445 kg
445 L
Boot Capacity
445 L
No data
Boot Capacity (Seats Down)
No data