The Comparative Analysis :

BMW 640i Cabrio xDrive Steptronic (13 - 14) vs. ALPINA B6 Bi-Turbo Cabriolet Switch-Tronic (15 - 18)

€ 87,300
BMW 640i Cabrio xDrive Steptronic (13 - 14) BMW 640i Cabrio
€ 137,200
 ALPINA B6 Bi-Turbo Cabriolet Switch-Tronic (15 - 18) ALPINA B6 Bi-Turbo Cabriolet
€ 87,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 137,200

ⓘ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 length and width, but the BMW 640i Cabrio is 0.8 cm lower.
BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
1365
Blueprint BMW 640i Cabrio xDrive Steptronic (13 - 14)
1894
2081
1373
Blueprint ALPINA B6 Bi-Turbo Cabriolet Switch-Tronic (15 - 18)
1894
2094
1894 mm
Width
1894 mm
2081 mm
Width Incl. Mirrors
2094 mm
1365 mm
Height
1373 mm
Blueprint BMW 640i Cabrio xDrive Steptronic (13 - 14)
2855
4894
Blueprint ALPINA B6 Bi-Turbo Cabriolet Switch-Tronic (15 - 18)
2855
4894
4894 mm
Length
4894 mm
2855 mm
Wheelbase
2855 mm

Vehicle Weight

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
1985 kg
Kerb Weight
2095 kg
2400 kg
Gross Vehicle
Weight
2430 kg
BMW 640i Cabrio xDrive Steptronic (13 - 14)
Weight Difference:
110 kg
5.25 %
ALPINA B6 Bi-Turbo Cabriolet Switch-Tronic (15 - 18)

General

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
F12
Generation
F12
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Permanent all-wheel drive
Drive
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
Straight-six petrol engine with tur­bo­charger
Engine Type
V8 petrol engine with two tur­bo­chargers (bi­turbo)
BMW N55
Engine Series
N55-B30
Engine Code
N63-B44
4
Valves
4
6
Cylinders
8
2979 CC
Engine Capacity
4395 CC
316 bhp
at 5800 rpm
Power
592 bhp
at 6000 rpm
BMW 640i Cabrio
316 bhp
592 bhp
ALPINA B6 Bi-Turbo Cabriolet
450 NM
at 1300 rpm
Max. Torque
800 NM
at 3500 rpm
BMW 640i Cabrio
450 NM
800 NM
ALPINA B6 Bi-Turbo Cabriolet

Performance

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
155 mph
Maximum Speed
203 mph
5.4 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph 62
mph

75 m
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

58 m
0.000 sec

ALPINA B6 Bi-Turbo Cabriolet

▶ REPLAY
6.28 kg/bhp
Weight-to-Power Ratio
3.54 kg/bhp
BMW 640i Cabrio
6.28 kg/bhp
3.54 kg/bhp
ALPINA B6 Bi-Turbo Cabriolet

Fuel Economy / Emissions

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
Fuel Economy
34 mpg
combined
29 mpg
BMW 640i Cabrio
34 mpg
29 mpg
ALPINA B6 Bi-Turbo Cabriolet
25 mpg
city
21 mpg
No data
motorway
No data
Kraftstoffanzeige
70 L
Fuel Tank Capacity
70 L
Kraftstoffanzeige
531 mi
Range
453 mi
BMW 640i Cabrio
531 mi
453 mi
ALPINA B6 Bi-Turbo Cabriolet
Environmental Impact
155.3 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).
181.9 kWh
BMW 640i Cabrio
155.3 kWh
181.9 kWh
ALPINA B6 Bi-Turbo Cabriolet
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
192 g/km (NEFZ)
CO2 Emissions
224 g/km (NEFZ)

Practical Convenience

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Cabriolet
2
Doors
2
4
No. of Seats
4
415 kg
Maximum Payload
335 kg
350 L
Boot Capacity
350 L
No data
Boot Capacity (Seats Down)
No data