The Comparative Analysis :

BMW 640i Convertible xDrive Steptronic (15 - 18) vs. ALPINA B6 Bi-Turbo Convertible Switch-Tronic (12 - 14)

€ 95,100
BMW 640i Convertible xDrive Steptronic (15 - 18) BMW 640i Cabrio
€ 130,800
 ALPINA B6 Bi-Turbo Convertible Switch-Tronic (12 - 14) ALPINA B6 Bi-Turbo Convertible
€ 95,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 130,800

ⓘ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 0.3 inches lower.
BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
53.7
Blueprint BMW 640i Convertible xDrive Steptronic (15 - 18)
74.6
81.9
54.1
Blueprint ALPINA B6 Bi-Turbo Convertible Switch-Tronic (12 - 14)
74.6
82.4
74.6 in
Width
74.6 in
81.9 in
Width Incl. Mirrors
82.4 in
53.7 in
Height
54.1 in
Blueprint BMW 640i Convertible xDrive Steptronic (15 - 18)
112.4
192.7
Blueprint ALPINA B6 Bi-Turbo Convertible Switch-Tronic (12 - 14)
112.4
192.7
192.7 in
Length
192.7 in
112.4 in
Wheelbase
112.4 in

Vehicle Weight

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
4332 lb
Curb Weight
4619 lb
5269 lb
Gross Vehicle
Weight
5357 lb
BMW 640i Convertible xDrive Steptronic (15 - 18)
Weight Difference:
287 lb
6.21 %
ALPINA B6 Bi-Turbo Convertible Switch-Tronic (12 - 14)

General

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
F12
Generation
F12
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 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
Straight-six gasoline engine with tur­bo­charger
Engine Type
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N55
Engine Series
N55-B30
Engine Code
N63-M10
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4.4 L / 215 cu in
316 hp
at 5800 rpm
Power
533 hp
at 5200 rpm
BMW 640i Cabrio
316 hp
533 hp
ALPINA B6 Bi-Turbo Convertible
332 lb‑ft
at 1300 rpm
Max. Torque
538 lb‑ft
at 2800 rpm
BMW 640i Cabrio
332 lb‑ft
538 lb‑ft
ALPINA B6 Bi-Turbo Convertible

Performance

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
155 mph
Maximum Speed
197 mph
5.4 sec
Acceleration 0 to 62 mph
4.4 sec
62 mph 62
mph

246 ft
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

200 ft
0.000 sec

ALPINA B6 Bi-Turbo Convertible

▶ REPLAY
13.71 lb/hp
Weight-to-Power Ratio
8.67 lb/hp
BMW 640i Cabrio
13.71 lb/hp
8.67 lb/hp
ALPINA B6 Bi-Turbo Convertible

Fuel Economy / Emissions

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
Fuel Economy
29 mpg
combined
25 mpg
BMW 640i Cabrio
29 mpg
25 mpg
ALPINA B6 Bi-Turbo Convertible
21 mpg
city
18 mpg
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
531 mi
Range
453 mi
BMW 640i Cabrio
531 mi
453 mi
ALPINA B6 Bi-Turbo Convertible
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 Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 5
307 g/mi (NEFZ)
CO2 Emissions
360 g/mi (NEFZ)

Practical Convenience

BMW 640i Cabrio
ALPINA B6 Bi-Turbo Convertible
2
Doors
2
4
No. of Seats
4
937 lb
Maximum Payload
739 lb
9.9 cu ft
Trunk Volume
9.9 cu ft
No data
Cargo Volume (Seats Down)
No data