Compare Alpina B6 F12 vs BMW 6 Series E64 Convertible vs BMW 6 Series F12 Convertible
Variants
B6 Bi-Turbo
B6 Bi-Turbo EDITION 50
630i
630i AT
645Ci
645Ci AT
650i
650i AT
640d
640d xDrive
640i
640i xDrive
650i 407
650i 407 xDrive
650i 450
650i 450 xDrive
Capacity
Cargo Capacity
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
Coolant Capacity
14.2 L / 15.0 qt
Fuel Capacity
70.0 L / 18.5 gal
70.0 L / 18.5 gal
70.0 L / 18.5 gal
Passengers
4
4
4
Payload
410 kg / 904 lbs
400 kg / 882 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Disc
Ventilated discs
Power Steering
Electric Steering
Hydraulic Steering
Electric Steering
Suspension | Front
Double-wishbone
MacPherson strut
Double-wishbone
Suspension | Rear
Multi-link
Multi-link
Multi-link
Turning Circle
11.4 m / 37.4 ft
11.7 m / 38.4 ft
Construction
Body Style
2-door Convertible
2-door Convertible
2-door Convertible
Dimensions
Ground Clearance
123 mm / 4.8 in
Size | Height
1373 mm / 54.1 in
1365 mm / 53.7 in
Size | Length
4894 mm / 192.7 in
4820 mm / 189.8 in
4894 mm / 192.7 in
Size | Width
1855 mm / 73.0 in
1894 mm / 74.6 in
Track Width | Front
1594.0 mm / 62.8 in
1558.0 mm / 61.3 in
1600.0 mm / 63.0 in
Track Width | Rear
1665.0 mm / 65.6 in
Weight
2020.0 kg / 4453.3 lbs
Wheelbase
2855 mm / 112.4 in
2780 mm / 109.4 in
2855 mm / 112.4 in
Performance
CO2 Emission
224 g/km
Fuel Economy
9.6 L/100km / 24.5 MPG (combined) | 13.2 L/100km / 17.8 MPG (urban) | 7.5 L/100km / 31.4 MPG (highway)
Top Speed
250.0 km/h / 155.3 mph
250.0 km/h / 155.3 mph
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 4
Engine | Bore
89.0 mm / 3.5 in
Engine | Compression Ratio
10.0:1
Engine | Displacement
4.4 L / 268.2 cu-in / 4395.0 cc
Engine | Stroke
88.3 mm / 3.5 in
Engine | Type
Bi-turbocharged direct-injected petrol V8 engine
Transmission | Gears
8-speed
6-speed
8-speed
Transmission | Type
Automatic Switch-Tronic
Automatic Steptronic
Reviews
Neofiliac score
84%
72%
77%
Pros
- Superb level of torque
- Good performance
- Double-wishbone + multi-link suspensions
- Decent drivetrain reliability
- Decent looks with the top down
- Double-wishbone + multi-link suspension setup
- Improved styling
- Great performance
- Good ZF 8HP transmission
Cons
- Worse handling despite having double-wishbone front suspensions
- Even lower engine reliability
- Stuck with MacPherson struts in the front
- Not very good looking with the top up
- Unreliable engines (N63 and N57 being the worst)
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