Compare Alpina B6 F12 vs BMW M3 E93 Convertible vs BMW 3 Series E93 LCI Convertible
Variants
B6 Bi-Turbo
B6 Bi-Turbo EDITION 50
MT
DCT
318i
320d
320d AT
320i
320i AT
325d
325d AT
325i
325i AT
330d
330d AT
330i
330i AT
335i
335i AT
Capacity
Cargo Capacity
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
210 L / 7.4 cu-ft ~ 350 L / 12.4 cu-ft
210 L / 7.4 cu-ft ~ 350 L / 12.4 cu-ft
Engine Oil Capacity
8.8 L / 9.3 qt
Fuel Capacity
70.0 L / 18.5 gal
63.0 L / 16.6 gal
Passengers
4
4
4
Payload
410 kg / 904 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
MacPherson strut
MacPherson strut
Suspension | Rear
Multi-link
Multi-link
Multi-link
Turning Circle
11.7 m / 38.4 ft
11.0 m / 36.1 ft
Construction
Body Style
2-door Convertible
2-door Convertible
2-door Convertible
Dimensions
Ground Clearance
138 mm / 5.4 in
Size | Height
1392 mm / 54.8 in
1384 mm / 54.5 in
Size | Length
4894 mm / 192.7 in
4615 mm / 181.7 in
4612 mm / 181.6 in
Size | Width
1804 mm / 71.0 in
1782 mm / 70.2 in
Track Width | Front
1594.0 mm / 62.8 in
1540.0 mm / 60.6 in
Track Width | Rear
1539.0 mm / 60.6 in
Weight
2020.0 kg / 4453.3 lbs
Wheel Size
9.5J x 18
Wheelbase
2855 mm / 112.4 in
2761 mm / 108.7 in
2760 mm / 108.7 in
Performance
CO2 Emission
224 g/km
Coefficient Of Drag
0.32
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
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 5
Euro 5
Engine
S65B40
Engine | Bore
89.0 mm / 3.5 in
92.0 mm / 3.6 in
Engine | Compression Ratio
10.0:1
12.0:1
Engine | Displacement
4.4 L / 268.2 cu-in / 4395.0 cc
4.0 L / 244.0 cu-in / 3999.0 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
88.3 mm / 3.5 in
75.2 mm / 3.0 in
Engine | Torque
400 Nm / 295.0 lb-ft @ 3900 rpm
Engine | Type
Bi-turbocharged direct-injected petrol V8 engine
Naturally-aspirated multi-port injected petrol V8 engine with 4 values per cylinder
Transmission | Gears
8-speed
Transmission | Type
Automatic Switch-Tronic
Production
Availability
2008 ~ 2013
2010 ~ 2013
Reviews
Neofiliac score
84%
77%
65%
Pros
- Superb level of torque
- Good performance
- Double-wishbone + multi-link suspensions
- Convertible hard top
- Great styling with the top up or down
- Great S65 engine
- Good transmissions
- Supposedly more reliable, though still unreliable, engines
- Good 0.27 drag coefficient
Cons
- Worse handling despite having double-wishbone front suspensions
- Even lower engine reliability
- Stuck with MacPherson struts in the front
- Much heavier than the Coupe
- Complex and unreliable top
- Weight
- Engine reliability issues
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