Car comparison

Alpina B6 Cabrio (E64) 4.4 V8vsPorsche 911 Cabriolet (997) · Facelift 2008 Turbo 3.8

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

New comparison

Alpina B6 Cabrio (E64)

4.4 V8

500 hp4398 ccGasolineRWDAutomaticSuperchargedCabriolet / convertible2005-2008
VS

Porsche 911 Cabriolet (997) · Facelift 2008

Turbo 3.8

500 hp3800 ccGasolineAWDDual-clutchTurbochargedCabriolet / convertible2009-2011

Comparison overview

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

Best choices

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Quickest 0-100 km/h
    3.7 s
  • Lightest
    1,670 kg
    3,682 lb
  • Best power-to-weight
    299 hp/t
    223 kW/t
    3.3 kg/hp
  • Lowest combined fuel consumption
    11.5 L/100 km
    20.5 mpg US
    24.6 mpg UK
  • Lowest city consumption
    16.7 L/100 km
    14.1 mpg US
    16.9 mpg UK
  • Lowest highway consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest CO2 emissions
    270 g/km
  • Best estimated range
    583 km
    362 mi
  • Best overall score
    76/100
  • Best performance score
    90/100
  • Best economy score
    76/100

Alpina B6 Cabrio (E64) 4.4 V8

  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Most powerful
    500 hp
    373 kW
  • Highest torque
    700 Nm
    516 lb-ft
  • Largest trunk
    450 L
  • Best practicality score
    48/100

Specification comparison

Specification comparison
ModelAlpinaB6 Cabrio (E64)4.4 V8Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500hp373kW
500hp373kW
Torque
700Nm516lb-ft
650Nm479lb-ft
Curb weight
1,930kg4,255lb
1,670kg3,682lb
Gross weight
2,350kg5,181lb
2,020kg4,453lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
312 km/h
194 mph
To 99% top speed
84.3s99% target: 317 km/h / 197 mph
Calculated
54.8s99% target: 309 km/h / 192 mph
Calculated
0-100 km/h
4.9s
3.7s
0-200 km/h
14.6s
Calculated
10.7s
Calculated
0-60 mph
4.7s
Calculated
3.5s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption city
18.9L/100 km12.4mpg US14.9mpg UK
16.7L/100 km14.1mpg US16.9mpg UK
Fuel consumption highway
9.3L/100 km25.3mpg US30.4mpg UK
8.2L/100 km28.7mpg US34.4mpg UK
Quarter mile
12.8s
Calculated
11.4s
Calculated
Power-to-weight
259hp/t193kW/t118hp/1000 lb
Calculated
299hp/t223kW/t136hp/1000 lb
Calculated
Torque-to-weight
363Nm/t243lb-ft/ton
Calculated
389Nm/t260lb-ft/ton
Calculated
Estimated range
547km340mi
Calculated
583km362mi
Calculated
Displacement
4,398cc268cu in
3,800cc232cu in
Length
4,820mm190in
4,450mm175in
Width
1,855mm73in
1,852mm73in
Height
1,371mm54in
1,300mm51in
Wheelbase
2,780mm109in
2,350mm93in
Front track
1,558mm61in
-
Rear track
1,598mm63in
-
Max trunk volume
450L
105L
Doors
2
2
Seats
4
4
Fuel tank
70L
67L
CO2 emissions
306g/km
270g/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.

Alpina B6 Cabrio (E64) 4.4 V8Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8PowerTorque
  • Alpina B6 Cabrio (E64) 4.4 V8: Power / Torque
  • Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AlpinaB6 Cabrio (E64)4.4 V85,500 rpm4,250 rpm5,750 rpm
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlpinaB6 Cabrio (E64)4.4 V8Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
3.5 s
0-100 km/h
0-62 mph
4.9 s
3.7 s
0-200 km/h
0-124 mph
14.6 s
10.7 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
312 km/h
194 mph
Drag race simulation
60 ft
18 m
2.2 s
2.0 s
330 ft
101 m
5.7 s
5.1 s
1/8 mile
201 m
8.5 s
7.6 s
1000 ft
305 m
10.9 s
9.7 s
1/4 mile
402 m
12.8 s
11.4 s
Trap speed
1/4 mile
402 m
187 km/h
116 mph
207 km/h
129 mph

Power comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW

Torque comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
700 Nm
516 lb-ft
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
650 Nm
479 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
1,930 kg
4,255 lb
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
1,670 kg
3,682 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
312 km/h
194 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V84.9 s
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.83.7 s

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and Alpina B6 Cabrio (E64) 4.4 V8: 1.2 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and Alpina B6 Cabrio (E64) 4.4 V8: 1.3 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
259 hp/t
193 kW/t
3.9 kg/hp
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
299 hp/t
223 kW/t
3.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
547 km
340 mi
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
583 km
362 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW
4.9 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW
3.7 s
312 km/h
194 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
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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.7 s
Top speed
312 km/h
194 mph
Doors/seats
2 doors
4 seats
Trunk
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 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
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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.7 s
Top speed
312 km/h
194 mph
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 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
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
4.9 s
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
3.7 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
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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
299 hp/t
223 kW/t
3.3 kg/hp
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlpinaB6 Cabrio (E64)4.4 V8Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
500 hp
373 kW
Torque
700 Nm
516 lb-ft
650 Nm
479 lb-ft
Acceleration
4.9 s
3.7 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
312 km/h
194 mph
Lightness
1,930 kg
4,255 lb
1,670 kg
3,682 lb
Fuel consumption
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 in
Range score
547 km
340 mi
583 km
362 mi
CO2 score
306 g/km
270 g/km
Trunk score
450 L
15.9 cu ft
105 L
3.7 cu ft
Power-to-weight score
259 hp/t
193 kW/t
3.9 kg/hp
299 hp/t
223 kW/t
3.3 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
VehicleAlpina B6 Cabrio (E64) 4.4 V8Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK11.5 L/100 km20.5 mpg US24.6 mpg UK
Cost / 100 km22.40 LC100 km20.13 LC100 km
Cost / 100 mi36.05 LC100 mi32.39 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal1,725 L456 US gal379 UK gal
Annual fuel cost3,360 LC/year3,019 LC/year

Head-to-head comparisons

Alpina B6 Cabrio (E64) 4.4 V8

  • Has 50 Nm more
  • Has 8 km/h (5 mph) higher top speed
  • Has 345 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Is 260 kg lighter
  • Is 1.2 s quicker from 0-100 km/h
  • Uses 1.3 L/100 km less fuel
  • Has 40 hp/t better power-to-weight
  • Has 36 km (22 mi) more estimated range
  • Emits 36 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alpina B6 Cabrio (E64) 4.4 V8
Porsche 911 Cabriolet (997) Turbo 3.8
Compare selected cars
2 vehicles selected

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