The Comparative Analysis :

BMW 640d Convertible Steptronic (15 - 18) vs. ALPINA B6 Bi-Turbo Convertible Switch-Tronic (15 - 18)

€ 95,900
BMW 640d Convertible Steptronic (15 - 18) BMW 640d Cabrio
€ 137,200
 ALPINA B6 Bi-Turbo Convertible Switch-Tronic (15 - 18) ALPINA B6 Bi-Turbo Convertible
€ 95,900
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 640d Cabrio is 0.3 inches lower.
BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
53.7
Blueprint BMW 640d Convertible Steptronic (15 - 18)
74.6
81.9
54.1
Blueprint ALPINA B6 Bi-Turbo Convertible Switch-Tronic (15 - 18)
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 640d Convertible Steptronic (15 - 18)
112.4
192.7
Blueprint ALPINA B6 Bi-Turbo Convertible Switch-Tronic (15 - 18)
112.4
192.7
192.7 in
Length
192.7 in
112.4 in
Wheelbase
112.4 in

Vehicle Weight

BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
4266 lb
Curb Weight
4619 lb
5214 lb
Gross Vehicle
Weight
5357 lb
BMW 640d Convertible Steptronic (15 - 18)
Weight Difference:
353 lb
7.64 %
ALPINA B6 Bi-Turbo Convertible Switch-Tronic (15 - 18)

General

BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
F12
Generation
F12
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
Straight-six diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N57
Engine Series
N57-D30
Engine Code
N63-B44
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4.4 L / 215 cu in
309 hp
at 4400 rpm
Power
592 hp
at 6000 rpm
BMW 640d Cabrio
309 hp
592 hp
ALPINA B6 Bi-Turbo Convertible
465 lb‑ft
at 1500 rpm
Max. Torque
590 lb‑ft
at 3500 rpm
BMW 640d Cabrio
465 lb‑ft
590 lb‑ft
ALPINA B6 Bi-Turbo Convertible

Performance

BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
155 mph
Maximum Speed
203 mph
5.5 sec
Acceleration 0 to 62 mph
4.2 sec
62 mph 62
mph

249 ft
0.000 sec

BMW 640d Cabrio

62 mph 62
mph

190 ft
0.000 sec

ALPINA B6 Bi-Turbo Convertible

▶ REPLAY
13.81 lb/hp
Weight-to-Power Ratio
7.8 lb/hp
BMW 640d Cabrio
13.81 lb/hp
7.8 lb/hp
ALPINA B6 Bi-Turbo Convertible

Fuel Economy / Emissions

BMW 640d Cabrio
ALPINA B6 Bi-Turbo Convertible
Fuel Economy
42 mpg
combined
25 mpg
BMW 640d Cabrio
42 mpg
25 mpg
ALPINA B6 Bi-Turbo Convertible
36 mpg
city
18 mpg
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
777 mi
Range
453 mi
BMW 640d Cabrio
777 mi
453 mi
ALPINA B6 Bi-Turbo Convertible
Environmental Impact
115.2 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 640d Cabrio
115.2 kWh
181.9 kWh
ALPINA B6 Bi-Turbo Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
240 g/mi (NEFZ)
CO2 Emissions
360 g/mi (NEFZ)

Practical Convenience

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