The Comparative Analysis :

BMW 440i Convertible xDrive Steptronic (17 - ..) vs. ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)

€ 68,400
BMW 440i Convertible xDrive Steptronic (17 - ..) BMW 440i Cabrio
€ 75,900
 ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17) ALPINA B4 Bi-Turbo Cabrio
€ 68,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 75,900

ⓘ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 440i Cabrio is 0.1 inches shorter and 0.7 inches taller.
BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
55.1
Blueprint BMW 440i Convertible xDrive Steptronic (17 - ..)
71.9
79.4
54.3
Blueprint ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)
71.9
79.7
71.9 in
Width
71.9 in
79.4 in
Width Incl. Mirrors
79.7 in
55.1 in
Height
54.3 in
Blueprint BMW 440i Convertible xDrive Steptronic (17 - ..)
110.6
182.6
Blueprint ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)
110.6
182.7
182.6 in
Length
182.7 in
110.6 in
Wheelbase
110.6 in

Vehicle Weight

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
4244 lb
Curb Weight
4222 lb
5071 lb
Gross Vehicle
Weight
5071 lb
BMW 440i Convertible xDrive Steptronic (17 - ..)
Weight Difference:
22 lb
0.52 %
ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)

General

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
Straight-six gasoline engine with tur­bo­charger
Engine Type
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
BMW B58
Engine Series
B58-B30
Engine Code
N55-R20
4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3 L / 147 cu in
322 hp
at 5500 rpm
Power
404 hp
at 5500 rpm
BMW 440i Cabrio
322 hp
404 hp
ALPINA B4 Bi-Turbo Cabrio
332 lb‑ft
at 1380 rpm
Max. Torque
443 lb‑ft
at 3000 rpm
BMW 440i Cabrio
332 lb‑ft
443 lb‑ft
ALPINA B4 Bi-Turbo Cabrio

Performance

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
155 mph
Maximum Speed
187 mph
5.4 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

246 ft
0.000 sec

BMW 440i Cabrio

62 mph 62
mph

207 ft
0.000 sec

ALPINA B4 Bi-Turbo Cabrio

▶ REPLAY
13.18 lb/hp
Weight-to-Power Ratio
10.45 lb/hp
BMW 440i Cabrio
13.18 lb/hp
10.45 lb/hp
ALPINA B4 Bi-Turbo Cabrio

Fuel Economy / Emissions

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
Fuel Economy
30 mpg
combined
29 mpg
BMW 440i Cabrio
30 mpg
29 mpg
ALPINA B4 Bi-Turbo Cabrio
23 mpg
city
22 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
472 mi
Range
466 mi
BMW 440i Cabrio
472 mi
466 mi
ALPINA B4 Bi-Turbo Cabrio
Environmental Impact
149.7 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).
151.6 kWh
BMW 440i Cabrio
149.7 kWh
151.6 kWh
ALPINA B4 Bi-Turbo Cabrio
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 6b (NEFZ)
352 g/mi (WLTP)
CO2 Emissions
299 g/mi (NEFZ)

Practical Convenience

BMW 440i Cabrio
ALPINA B4 Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
849 lb
10.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data