The Comparative Analysis :

BMW 640i Convertible Steptronic (13 - 14) vs. ALPINA B6 Convertible Switch-Tronic (06 - 08)

€ 83,900
BMW 640i Convertible Steptronic (13 - 14) BMW 640i Cabrio
€ 129,100
 ALPINA B6 Convertible Switch-Tronic (06 - 08) ALPINA B6 Convertible
€ 83,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 129,100

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The dimensions of these vehicles differ slightly. The BMW 640i Cabrio is 2.9 inches longer, 1.5 inches wider and 0.2 inches lower than the ALPINA B6 Convertible.
BMW 640i Cabrio
ALPINA B6 Convertible
53.7
Blueprint BMW 640i Convertible Steptronic (13 - 14)
74.6
81.9
54
Blueprint ALPINA B6 Convertible Switch-Tronic (06 - 08)
73
80.9
74.6 in
Width
73 in
81.9 in
Width Incl. Mirrors
80.9 in
53.7 in
Height
54 in
Blueprint BMW 640i Convertible Steptronic (13 - 14)
112.4
192.7
Blueprint ALPINA B6 Convertible Switch-Tronic (06 - 08)
109.4
189.8
192.7 in
Length
189.8 in
112.4 in
Wheelbase
109.4 in

Vehicle Weight

BMW 640i Cabrio
ALPINA B6 Convertible
4222 lb
Curb Weight
4420 lb
5049 lb
Gross Vehicle
Weight
5181 lb
BMW 640i Convertible Steptronic (13 - 14)
Weight Difference:
198 lb
4.48 %
ALPINA B6 Convertible Switch-Tronic (06 - 08)

General

BMW 640i Cabrio
ALPINA B6 Convertible
F12
Generation
E64
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
6-speed automatic transmission

Engine

BMW 640i Cabrio
ALPINA B6 Convertible
Straight-six gasoline engine with tur­bo­charger
Engine Type
V8 gasoline engine with centri­fugal com­pres­sor
BMW N55
Engine Series
N55-B30
Engine Code
N62-B44
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4.4 L / 215 cu in
316 hp
at 5800 rpm
Power
493 hp
at 5500 rpm
BMW 640i Cabrio
316 hp
493 hp
ALPINA B6 Convertible
332 lb‑ft
at 1300 rpm
Max. Torque
516 lb‑ft
at 4250 rpm
BMW 640i Cabrio
332 lb‑ft
516 lb‑ft
ALPINA B6 Convertible

Performance

BMW 640i Cabrio
ALPINA B6 Convertible
155 mph
Maximum Speed
193 mph
5.7 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph 62
mph

259 ft
0.000 sec

BMW 640i Cabrio

62 mph 62
mph

223 ft
0.000 sec

ALPINA B6 Convertible

▶ REPLAY
13.36 lb/hp
Weight-to-Power Ratio
8.97 lb/hp
BMW 640i Cabrio
13.36 lb/hp
8.97 lb/hp
ALPINA B6 Convertible

Fuel Economy / Emissions

BMW 640i Cabrio
ALPINA B6 Convertible
Fuel Economy
30 mpg
combined
18 mpg
BMW 640i Cabrio
30 mpg
18 mpg
ALPINA B6 Convertible
22 mpg
city
12 mpg
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
557 mi
Range
340 mi
BMW 640i Cabrio
557 mi
340 mi
ALPINA B6 Convertible
Environmental Impact
147.7 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).
242.5 kWh
BMW 640i Cabrio
147.7 kWh
242.5 kWh
ALPINA B6 Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 4
291 g/mi (NEFZ)
CO2 Emissions
492 g/mi (NEFZ)

Practical Convenience

BMW 640i Cabrio
ALPINA B6 Convertible
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
761 lb
9.9 cu ft
Trunk Volume
8.5 cu ft
No data
Cargo Volume (Seats Down)
No data