The Comparative Analysis :

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

€ 42,900
BMW 420i Coupé xDrive (17 - 18) BMW 420i Coupé
€ 78,200
 ALPINA B4 S Bi-Turbo Coupé AWD Switch-Tronic (18 - 19) ALPINA B4 S Bi-Turbo Coupé
€ 42,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 78,200

ⓘ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 0.7 inches taller.
BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
54.8
Blueprint BMW 420i Coupé xDrive (17 - 18)
71.9
79.4
54.1
Blueprint ALPINA B4 S Bi-Turbo Coupé AWD Switch-Tronic (18 - 19)
71.9
79.7
71.9 in
Width
71.9 in
79.4 in
Width Incl. Mirrors
79.7 in
54.8 in
Height
54.1 in
Blueprint BMW 420i Coupé xDrive (17 - 18)
110.6
182.6
Blueprint ALPINA B4 S Bi-Turbo Coupé AWD 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
3605 lb
Curb Weight
3869 lb
4586 lb
Gross Vehicle
Weight
4850 lb
BMW 420i Coupé xDrive (17 - 18)
Weight Difference:
265 lb
6.85 %
ALPINA B4 S Bi-Turbo Coupé AWD 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
Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)
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
145 mph
Maximum Speed
188 mph
7.6 sec
Acceleration 0 to 62 mph
3.9 sec
62 mph 62
mph

348 ft
0.000 sec

BMW 420i Coupé

62 mph 62
mph

177 ft
0.000 sec

ALPINA B4 S Bi-Turbo Coupé

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

Fuel Economy / Emissions

BMW 420i Coupé
ALPINA B4 S Bi-Turbo Coupé
Fuel Economy
36 mpg
combined
26 mpg
BMW 420i Coupé
36 mpg
26 mpg
ALPINA B4 S Bi-Turbo Coupé
27 mpg
city
19 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
565 mi
Range
405 mi
BMW 420i Coupé
565 mi
405 mi
ALPINA B4 S Bi-Turbo Coupé
Environmental Impact
125 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).
174.3 kWh
BMW 420i Coupé
125 kWh
174.3 kWh
ALPINA B4 S Bi-Turbo Coupé
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP (WLTP)
248 g/mi (NEFZ)
CO2 Emissions
336 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