Compare BMW 6 Series F12 Convertible vs Alpina B6 F12 vs Alpina D4 F33 Convertible
Variants
640d
640d xDrive
640i
640i xDrive
650i 407
650i 407 xDrive
650i 450
650i 450 xDrive
B6 Bi-Turbo
B6 Bi-Turbo EDITION 50
LCI
Pre-LCI
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
Fuel Capacity
70.0 L / 18.5 gal
70.0 L / 18.5 gal
57.0 L / 15.1 gal
Passengers
4
4
4
Payload
410 kg / 904 lbs
450 kg / 992 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Ventilated discs
Ventilated discs
Power Steering
Electric Steering
Electric Steering
Electric Steering
Suspension | Front
Double-wishbone
Double-wishbone
MacPherson strut
Suspension | Rear
Multi-link
Multi-link
Multi-link
Turning Circle
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
1365 mm / 53.7 in
Size | Length
4894 mm / 192.7 in
4894 mm / 192.7 in
4640 mm / 182.7 in
Size | Width
1894 mm / 74.6 in
1825 mm / 71.9 in
Track Width | Front
1600.0 mm / 63.0 in
1594.0 mm / 62.8 in
1552.0 mm / 61.1 in
Track Width | Rear
1665.0 mm / 65.6 in
1576.0 mm / 62.0 in
Weight
2020.0 kg / 4453.3 lbs
1815.0 kg / 4001.4 lbs
Wheelbase
2855 mm / 112.4 in
2855 mm / 112.4 in
2810 mm / 110.6 in
Performance
Acceleration | 0 - 100 km/h
5.0 sec
Acceleration | 0 - 60 mph
4.8 sec
CO2 Emission
224 g/km
155 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)
5.9 L/100km / 39.9 MPG (combined) | 6.6 L/100km / 35.6 MPG (urban) | 5.5 L/100km / 42.8 MPG (highway)
Top Speed
250.0 km/h / 155.3 mph
275.0 km/h / 170.9 mph
Towing Capacity
750 kg / 1653 lbs (w/o brakes) | 1800 kg / 3968 lbs (w/ brakes @ 12% gradient)
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 6
Engine | Bore
89.0 mm / 3.5 in
84.0 mm / 3.3 in
Engine | Compression Ratio
10.0:1
16.5:1
Engine | Displacement
4.4 L / 268.2 cu-in / 4395.0 cc
3.0 L / 182.6 cu-in / 2993.0 cc
Engine | Power
350.0 hp / 261.0 kW @ 4000 rpm
Engine | Specific Output
116.9 hp/L / 1.9 hp/cu-in
Engine | Stroke
88.3 mm / 3.5 in
90.0 mm / 3.5 in
Engine | Torque
700 Nm / 516.3 lb-ft @ 1500-3000 rpm
Engine | Type
Bi-turbocharged direct-injected petrol V8 engine
Transmission | Gears
8-speed
8-speed
8-speed
Transmission | Type
Automatic Steptronic
Automatic Switch-Tronic
Automatic Switch Tronic
Reviews
Neofiliac score
77%
84%
68%
Pros
- Double-wishbone + multi-link suspension setup
- Improved styling
- Great performance
- Good ZF 8HP transmission
- Superb level of torque
- Good performance
- Double-wishbone + multi-link suspensions
- Decent performance
- Same styling as the Alpina B4 F33
Cons
- Unreliable engines (N63 and N57 being the worst)
- Worse handling despite having double-wishbone front suspensions
- Even lower engine reliability
- Not different than the base 4 Series with a body kit
- Diesel in a convertible
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