Compare Alpina B6 E64 vs BMW M3 E93 Convertible vs BMW M4 F83 Convertible
Variants
B6
B6 S
MT
DCT
M4
M4 DCT
M4 Competition
M4 Competition DCT
Capacity
Cargo Capacity
450 L / 15.9 cu-ft
210 L / 7.4 cu-ft ~ 350 L / 12.4 cu-ft
220 L / 7.8 cu-ft ~ 370 L / 13.1 cu-ft
Coolant Capacity
13.9 L / 14.7 qt
Engine Oil Capacity
8.8 L / 9.3 qt
6.5 L / 6.9 qt
Fuel Capacity
70.0 L / 18.5 gal
63.0 L / 16.6 gal
60.0 L / 15.9 gal
Passengers
4
4
4
Payload
260 kg / 573 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
MacPherson strut
MacPherson strut
Suspension | Rear
Multi-link
Multi-link
Multi-link
Turning Circle
11.7 m / 38.4 ft
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
1392 mm / 54.8 in
Size | Length
4820 mm / 189.8 in
4615 mm / 181.7 in
4671 mm / 183.9 in
Size | Width
1855 mm / 73.0 in
1804 mm / 71.0 in
Track Width | Front
1558.0 mm / 61.3 in
1540.0 mm / 60.6 in
1579.0 mm / 62.2 in
Track Width | Rear
1598.0 mm / 62.9 in
1539.0 mm / 60.6 in
Weight
1930.0 kg / 4254.9 lbs
Wheel Size
9.5J x 18
Wheelbase
2780 mm / 109.4 in
2761 mm / 108.7 in
2812 mm / 110.7 in
Performance
Coefficient Of Drag
0.32
0.34
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)
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
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 4
Euro 5
Euro 6
Engine
S65B40
S55B30
Engine | Bore
92.0 mm / 3.6 in
92.0 mm / 3.6 in
84.0 mm / 3.3 in
Engine | Compression Ratio
9.0:1
12.0:1
10.2:1
Engine | Displacement
4.4 L / 268.4 cu-in / 4398.0 cc
4.0 L / 244.0 cu-in / 3999.0 cc
3.0 L / 181.8 cu-in / 2979.0 cc
Engine | Power
420.0 hp / 313.2 kW @ 8300 rpm
Engine | Specific Output
105.0 hp/L / 1.7 hp/cu-in
Engine | Stroke
82.7 mm / 3.3 in
75.2 mm / 3.0 in
89.6 mm / 3.5 in
Engine | Torque
400 Nm / 295.0 lb-ft @ 3900 rpm
550 Nm / 405.7 lb-ft @ 1850-5500 rpm
Engine | Type
Supercharged multi-port injected petrol V8 DOHC engine with 4 values per cylinder
Naturally-aspirated multi-port injected petrol V8 engine with 4 values per cylinder
Twin-scroll turbocharged direct-injected petrol inline-6 engine with 4 values per cylinder
Transmission | Gears
6-speed
Transmission | Type
Automatic
Production
Availability
2008 ~ 2013
Reviews
Neofiliac score
87%
77%
90%
Pros
- Superb elegance and styling
- Good performance
- Decent handling
- Convertible hard top
- Great styling with the top up or down
- Great S65 engine
- Good transmissions
- Exceptionally gorgeous top up or down
- Great S55 engine
- Good manual transmission and decent DCT
Cons
- Very high fuel consumption
- Stuck with MacPherson struts in the front
- Stuck with MacPherson struts in the front
- Much heavier than the Coupe
- Quite heavy
- Does not handle all that well
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