Car comparison

Porsche 911 Cabriolet (997) Turbo 3.6vsAlpina B6 Cabrio (E64) 4.4 V8

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

Porsche 911 Cabriolet (997)

Turbo 3.6

480 hp3600 ccGasolineAWDManualTurbochargedCabriolet / convertible2007-2008
VS

Alpina B6 Cabrio (E64)

4.4 V8

500 hp4398 ccGasolineRWDAutomaticSuperchargedCabriolet / convertible2005-2008

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

Alpina B6 Cabrio (E64) 4.4 V8

  • Most powerful
    500 hp
    373 kW
  • Highest torque
    700 Nm
    516 lb-ft
  • Lowest combined fuel consumption
    12.8 L/100 km
    18.4 mpg US
    22.1 mpg UK
  • Lowest city consumption
    18.9 L/100 km
    12.4 mpg US
    14.9 mpg UK
  • Lowest highway consumption
    9.3 L/100 km
    25.3 mpg US
    30.4 mpg UK
  • Best estimated range
    547 km
    340 mi
  • Best economy score
    73/100
  • Best practicality score
    48/100

Porsche 911 Cabriolet (997) Turbo 3.6

  • Quickest 0-100 km/h
    4.0 s
  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Lightest
    1,655 kg
    3,649 lb
  • Best power-to-weight
    290 hp/t
    216 kW/t
    3.4 kg/hp
  • Best overall score
    75/100
  • Best performance score
    88/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (997)Turbo 3.6AlpinaB6 Cabrio (E64)4.4 V8
Power
480hp358kW
500hp373kW
Torque
620Nm457lb-ft
700Nm516lb-ft
Curb weight
1,655kg3,649lb
1,930kg4,255lb
Gross weight
2,000kg4,409lb
2,350kg5,181lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
To 99% top speed
60.9s99% target: 317 km/h / 197 mph
Calculated
84.3s99% target: 317 km/h / 197 mph
Calculated
0-100 km/h
4.0s
4.9s
0-200 km/h
11.4s
Calculated
14.6s
Calculated
0-60 mph
3.8s
Calculated
4.7s
Calculated
Fuel consumption
12.9L/100 km18.2mpg US21.9mpg UK
12.8L/100 km18.4mpg US22.1mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
18.9L/100 km12.4mpg US14.9mpg UK
Fuel consumption highway
9.5L/100 km24.8mpg US29.7mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Quarter mile
11.8s
Calculated
12.8s
Calculated
Power-to-weight
290hp/t216kW/t132hp/1000 lb
Calculated
259hp/t193kW/t118hp/1000 lb
Calculated
Torque-to-weight
375Nm/t251lb-ft/ton
Calculated
363Nm/t243lb-ft/ton
Calculated
Estimated range
496km308mi
Calculated
547km340mi
Calculated
Displacement
3,600cc220cu in
4,398cc268cu in
Length
4,427mm174in
4,820mm190in
Width
1,808mm71in
1,855mm73in
Height
1,310mm52in
1,371mm54in
Wheelbase
2,350mm93in
2,780mm109in
Front track-
1,558mm61in
Rear track-
1,598mm63in
Max trunk volume-
450L
Doors
2
2
Seats
4
4
Fuel tank
64L
70L
CO2 emissions-
306g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

Porsche 911 Cabriolet (997) Turbo 3.6Alpina B6 Cabrio (E64) 4.4 V8PowerTorque
  • Porsche 911 Cabriolet (997) Turbo 3.6: Power / Torque
  • Alpina B6 Cabrio (E64) 4.4 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (997)Turbo 3.66,000 rpm1,950-5,000 rpm6,250 rpm
AlpinaB6 Cabrio (E64)4.4 V85,500 rpm4,250 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (997)Turbo 3.6AlpinaB6 Cabrio (E64)4.4 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.8 s
4.7 s
0-100 km/h
0-62 mph
4.0 s
4.9 s
0-200 km/h
0-124 mph
11.4 s
14.6 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.3 s
5.7 s
1/8 mile
201 m
7.8 s
8.5 s
1000 ft
305 m
10.0 s
10.9 s
1/4 mile
402 m
11.8 s
12.8 s
Trap speed
1/4 mile
402 m
204 km/h
127 mph
187 km/h
116 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
480 hp
358 kW
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW

Alpina B6 Cabrio (E64) 4.4 V8 has 20 hp more than Porsche 911 Cabriolet (997) Turbo 3.6.

The biggest power difference is between Porsche 911 Cabriolet (997) Turbo 3.6 and Alpina B6 Cabrio (E64) 4.4 V8: 20 hp (15 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
620 Nm
457 lb-ft
AlpinaB6 Cabrio (E64)4.4 V8
700 Nm
516 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
1,655 kg
3,649 lb
AlpinaB6 Cabrio (E64)4.4 V8
1,930 kg
4,255 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
AlpinaB6 Cabrio (E64)4.4 V8
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.64.0 s
AlpinaB6 Cabrio (E64)4.4 V84.9 s

Although Alpina B6 Cabrio (E64) 4.4 V8 has more power, Porsche 911 Cabriolet (997) Turbo 3.6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (997) Turbo 3.6 and Alpina B6 Cabrio (E64) 4.4 V8: 0.9 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
290 hp/t
216 kW/t
3.4 kg/hp
AlpinaB6 Cabrio (E64)4.4 V8
259 hp/t
193 kW/t
3.9 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Turbo 3.6
496 km
308 mi
AlpinaB6 Cabrio (E64)4.4 V8
547 km
340 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (997)Turbo 3.6
480 hp
358 kW
4.0 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW
4.9 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
Porsche911 Cabriolet (997)Turbo 3.6
Power
480 hp
358 kW
0-100 km/h4.0 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Doors/seats
2 doors
4 seats
Trunk-
Length
4,427 mm
174.3 in
Height
1,310 mm
51.6 in
AlpinaB6 Cabrio (E64)4.4 V8
Power
500 hp
373 kW
0-100 km/h4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,371 mm
54.0 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
Porsche911 Cabriolet (997)Turbo 3.6
Power
480 hp
358 kW
0-100 km/h4.0 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
AlpinaB6 Cabrio (E64)4.4 V8
Power
500 hp
373 kW
0-100 km/h4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Alpina B6 Cabrio (E64) 4.4 V8 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
Porsche911 Cabriolet (997)Turbo 3.6
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
4.0 s
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
4.9 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
Porsche911 Cabriolet (997)Turbo 3.6
290 hp/t
216 kW/t
3.4 kg/hp
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
AlpinaB6 Cabrio (E64)4.4 V8
259 hp/t
193 kW/t
3.9 kg/hp
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (997)Turbo 3.6AlpinaB6 Cabrio (E64)4.4 V8
Power
480 hp
358 kW
500 hp
373 kW
Torque
620 Nm
457 lb-ft
700 Nm
516 lb-ft
Acceleration
4.0 s
4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Lightness
1,655 kg
3,649 lb
1,930 kg
4,255 lb
Fuel consumption
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk-
Length
4,427 mm
174.3 in
Height
1,310 mm
51.6 in
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,371 mm
54.0 in
Range score
496 km
308 mi
547 km
340 mi
CO2 score
-
306 g/km
Trunk score
-
450 L
15.9 cu ft
Power-to-weight score
290 hp/t
216 kW/t
3.4 kg/hp
259 hp/t
193 kW/t
3.9 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehiclePorsche 911 Cabriolet (997) Turbo 3.6Alpina B6 Cabrio (E64) 4.4 V8
Consumption12.9 L/100 km18.2 mpg US21.9 mpg UK12.8 L/100 km18.4 mpg US22.1 mpg UK
Cost / 100 km22.58 LC100 km22.40 LC100 km
Cost / 100 mi36.33 LC100 mi36.05 LC100 mi
Annual fuel used1,935 L511 US gal426 UK gal1,920 L507 US gal422 UK gal
Annual fuel cost3,386 LC/year3,360 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (997) Turbo 3.6

  • Is 275 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Has 31 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Highest combined fuel consumption

Alpina B6 Cabrio (E64) 4.4 V8

  • Has 20 hp more
  • Has 80 Nm more
  • Uses 0.1 L/100 km less fuel
  • Has 51 km (32 mi) more estimated range

Pros

  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (997) Turbo 3.6
Alpina B6 Cabrio (E64) 4.4 V8
Compare selected cars
2 vehicles selected

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