The Comparative Analysis :

BMW 420i Coupé (17 - ..) vs. ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)

€ 41,300
BMW 420i Coupé (17 - ..) BMW 420i Coupé
€ 75,300
 ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19) ALPINA B4 S Bi-Turbo Coupé
€ 41,300
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 0.1 inches shorter and 0.2 inches taller.
BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
54.2
Blueprint BMW 420i Coupé (17 - ..)
71.9
79.4
54.1
Blueprint ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)
71.9
79.7
71.9 in
Width
71.9 in
79.4 in
Width Incl. Mirrors
79.7 in
54.2 in
Height
54.1 in
Blueprint BMW 420i Coupé (17 - ..)
110.6
182.6
Blueprint ALPINA B4 S Bi-Turbo Coupé Switch-Tronic (18 - 19)
110.6
182.7
182.6 in
Length
182.7 in
110.6 in
Wheelbase
110.6 in

Vehicle Weight

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
3417 lb
Curb Weight
3726 lb
4398 lb
Gross Vehicle
Weight
4707 lb
BMW 420i Coupé (17 - ..)
Weight Difference:
309 lb
8.29 %
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
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
8-speed automatic transmission

Engine

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
Straight-four gasoline engine with tur­bo­charger
Engine Type
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
BMW B48
Engine Series
B48-B20
Engine Code
N55-B30
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
181 hp
at 5000 rpm
Power
434 hp
at 5500 rpm
BMW 420i Coupé
181 hp
434 hp
ALPINA B4 S Bi-Turbo Coupé
199 lb‑ft
at 1350 rpm
Max. Torque
487 lb‑ft
at 3000 rpm
BMW 420i Coupé
199 lb‑ft
487 lb‑ft
ALPINA B4 S Bi-Turbo Coupé

Performance

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

331 ft
0.000 sec

BMW 420i Coupé

62 mph 62
mph

190 ft
0.000 sec

ALPINA B4 S Bi-Turbo Coupé

▶ REPLAY
18.88 lb/hp
Weight-to-Power Ratio
8.59 lb/hp
BMW 420i Coupé
18.88 lb/hp
8.59 lb/hp
ALPINA B4 S Bi-Turbo Coupé

Fuel Economy / Emissions

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
Fuel Economy
37 mpg
combined
26 mpg
BMW 420i Coupé
37 mpg
26 mpg
ALPINA B4 S Bi-Turbo Coupé
29 mpg
city
19 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
583 mi
Range
409 mi
BMW 420i Coupé
583 mi
409 mi
ALPINA B4 S Bi-Turbo Coupé
Environmental Impact
121.2 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
121.2 kWh
172.4 kWh
ALPINA B4 S Bi-Turbo Coupé
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6d-TEMP (WLTP)
269 g/mi (WLTP)
CO2 Emissions
333 g/mi (NEFZ)

Practical Convenience

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
2
Doors
2
4
No. of Seats
4
981 lb
Maximum Payload
981 lb
12.6 cu ft
Trunk Volume
12.6 cu ft
No data
Cargo Volume (Seats Down)
No data