Compare Alpina B6 E64 vs Alpina B6 F12 vs BMW M8 F91 Convertible
Variants
B6
B6 S
B6 Bi-Turbo
B6 Bi-Turbo EDITION 50
M8
M8 Competition
Capacity
Cargo Capacity
450 L / 15.9 cu-ft
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
350 L / 12.4 cu-ft
Engine Oil Capacity
10.0 L / 10.6 qt
Fuel Capacity
70.0 L / 18.5 gal
70.0 L / 18.5 gal
68.0 L / 18.0 gal
Passengers
4
4
4
Payload
260 kg / 573 lbs
410 kg / 904 lbs
430 kg / 948 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Ventilated discs
Power Steering
Electric Steering
Electric Steering
Suspension | Front
MacPherson strut
Double-wishbone
Double-wishbone
Suspension | Rear
Multi-link
Multi-link
Multi-link
Turning Circle
12.2 m / 40.0 ft
Construction
Body Style
2-door Convertible
2-door Convertible
2-door Convertible
Dimensions
Size | Height
1371 mm / 54.0 in
1353 mm / 53.3 in
Size | Length
4820 mm / 189.8 in
4894 mm / 192.7 in
4867 mm / 191.6 in
Size | Width
1855 mm / 73.0 in
1907 mm / 75.1 in | 2137 mm / 84.1 in (mirror unfolded)
Track Width | Front
1558.0 mm / 61.3 in
1594.0 mm / 62.8 in
1627.0 mm / 64.1 in
Track Width | Rear
1598.0 mm / 62.9 in
1632.0 mm / 64.3 in
Weight
1930.0 kg / 4254.9 lbs
2020.0 kg / 4453.3 lbs
2010.0 kg / 4431.3 lbs
Wheelbase
2780 mm / 109.4 in
2855 mm / 112.4 in
2827 mm / 111.3 in
Performance
CO2 Emission
224 g/km
241 ~ 246 g/km
Fuel Economy
18.9 L/100km / 12.4 MPG (combined) | 22.6 L/100km / 10.4 MPG (urban) | 9.3 L/100km / 25.3 MPG (highway)
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
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), All-wheel drive
Emission Standard
Euro 4
Euro 6 d-TEMP
Engine
S63B44
Engine | Bore
92.0 mm / 3.6 in
89.0 mm / 3.5 in
89.0 mm / 3.5 in
Engine | Compression Ratio
9.0:1
10.0:1
10.0:1
Engine | Displacement
4.4 L / 268.4 cu-in / 4398.0 cc
4.4 L / 268.2 cu-in / 4395.0 cc
4.4 L / 268.2 cu-in / 4395.0 cc
Engine | Stroke
82.7 mm / 3.3 in
88.3 mm / 3.5 in
88.3 mm / 3.5 in
Engine | Type
Supercharged multi-port injected petrol V8 DOHC engine with 4 values per cylinder
Bi-turbocharged direct-injected petrol V8 engine
Twin-scroll turbocharged direct-injected petrol V8 engine with 4 values per cylinder
Transmission | Gears
6-speed
8-speed
8-speed
Transmission | Type
Automatic
Automatic Switch-Tronic
Automatic M Steptronic
Production
Availability
2019
Reviews
Neofiliac score
87%
84%
87%
Pros
- Superb elegance and styling
- Good performance
- Decent handling
- Superb level of torque
- Good performance
- Double-wishbone + multi-link suspensions
- Rather good performance
- Powerful V8 (perhaps the last from BMW)
- Decent handling
- Luxurious interior
Cons
- Very high fuel consumption
- Stuck with MacPherson struts in the front
- Worse handling despite having double-wishbone front suspensions
- Even lower engine reliability
- Poor ride comfort
- Reliability concerns
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