Car comparison

Porsche 911 Cabriolet (997) · Facelift 2008 Turbo 3.8vsPorsche 911 Cabriolet (991) Carrera 3.4

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

New comparison

Porsche 911 Cabriolet (997) · Facelift 2008

Turbo 3.8

500 hp3800 ccGasolineAWDManualTurbochargedCabriolet / convertible2009-2011
VS

Porsche 911 Cabriolet (991)

Carrera 3.4

350 hp3436 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2011-2015

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
    3.8 s
  • Fastest top speed
    312 km/h
    194 mph
  • Most powerful
    500 hp
    373 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Best power-to-weight
    304 hp/t
    227 kW/t
    3.3 kg/hp
  • Best overall score
    76/100
  • Best performance score
    89/100
  • Best practicality score
    47/100

Porsche 911 Cabriolet (991) Carrera 3.4

  • Lightest
    1,470 kg
    3,241 lb
  • Lowest combined fuel consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest city consumption
    12.7 L/100 km
    18.5 mpg US
    22.2 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    216 g/km
  • Best estimated range
    696 km
    432 mi
  • Largest trunk
    290 L
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (997)Facelift 2008Turbo 3.8Porsche911 Cabriolet (991)Carrera 3.4
Power
500hp373kW
350hp261kW
Torque
650Nm479lb-ft
390Nm288lb-ft
Curb weight
1,645kg3,627lb
1,470kg3,241lb
Gross weight
1,995kg4,398lb
1,850kg4,079lb
Top speed
312 km/h
194 mph
286 km/h
178 mph
To 99% top speed
55.9s99% target: 309 km/h / 192 mph
Calculated
68.9s99% target: 283 km/h / 176 mph
Calculated
0-100 km/h
3.8s
5.0s
0-200 km/h
11.0s
Calculated
15.6s
Calculated
0-60 mph
3.6s
Calculated
4.8s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption city
16.7L/100 km14.1mpg US16.9mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption highway
8.4L/100 km28mpg US33.6mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
11.6s
Calculated
13.0s
Calculated
Power-to-weight
304hp/t227kW/t138hp/1000 lb
Calculated
238hp/t178kW/t108hp/1000 lb
Calculated
Torque-to-weight
395Nm/t264lb-ft/ton
Calculated
265Nm/t178lb-ft/ton
Calculated
Estimated range
573km356mi
Calculated
696km432mi
Calculated
Displacement
3,800cc232cu in
3,436cc210cu in
Length
4,450mm175in
4,491mm177in
Width
1,852mm73in
1,808mm71in
Height
1,300mm51in
1,299mm51in
Wheelbase
2,350mm93in
2,450mm96in
Front track-
1,532mm60in
Rear track-
1,518mm60in
Trunk volume-
290L
Max trunk volume
105L
-
Doors
2
2
Seats
4
4
Fuel tank
67L
64L
CO2 emissions
275g/km
216g/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) Facelift 2008 Turbo 3.8Porsche 911 Cabriolet (991) Carrera 3.4PowerTorque
  • Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: Power / Torque
  • Porsche 911 Cabriolet (991) Carrera 3.4: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm
Porsche911 Cabriolet (991)Carrera 3.47,400 rpm5,600 rpm7,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (997)Facelift 2008Turbo 3.8Porsche911 Cabriolet (991)Carrera 3.4
Acceleration checkpoints
0-60 mph
0-97 km/h
3.6 s
4.8 s
0-100 km/h
0-62 mph
3.8 s
5.0 s
0-200 km/h
0-124 mph
11.0 s
15.6 s
Top speed
312 km/h
194 mph
286 km/h
178 mph
Drag race simulation
60 ft
18 m
2.0 s
2.2 s
330 ft
101 m
5.2 s
5.8 s
1/8 mile
201 m
7.6 s
8.6 s
1000 ft
305 m
9.8 s
11.0 s
1/4 mile
402 m
11.6 s
13.0 s
Trap speed
1/4 mile
402 m
206 km/h
128 mph
183 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 has 150 hp more than Porsche 911 Cabriolet (991) Carrera 3.4.

The biggest power difference is between Porsche 911 Cabriolet (991) Carrera 3.4 and Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: 150 hp (112 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
650 Nm
479 lb-ft
Porsche911 Cabriolet (991)Carrera 3.4
390 Nm
288 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
1,645 kg
3,627 lb
Porsche911 Cabriolet (991)Carrera 3.4
1,470 kg
3,241 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)Facelift 2008Turbo 3.8
312 km/h
194 mph
Porsche911 Cabriolet (991)Carrera 3.4
286 km/h
178 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)Facelift 2008Turbo 3.83.8 s
Porsche911 Cabriolet (991)Carrera 3.45.0 s

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and Porsche 911 Cabriolet (991) Carrera 3.4: 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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Carrera 3.4 and Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: 2.5 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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
304 hp/t
227 kW/t
3.3 kg/hp
Porsche911 Cabriolet (991)Carrera 3.4
238 hp/t
178 kW/t
4.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
573 km
356 mi
Porsche911 Cabriolet (991)Carrera 3.4
696 km
432 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW
3.8 s
312 km/h
194 mph
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW
5.0 s
286 km/h
178 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)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.8 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
Porsche911 Cabriolet (991)Carrera 3.4
Power
350 hp
261 kW
0-100 km/h5.0 s
Top speed
286 km/h
178 mph
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,491 mm
176.8 in
Height
1,299 mm
51.1 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)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.8 s
Top speed
312 km/h
194 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
Power
350 hp
261 kW
0-100 km/h5.0 s
Top speed
286 km/h
178 mph
9.2 L/100 km
25.6 mpg US
30.7 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
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
3.8 s
Porsche911 Cabriolet (991)Carrera 3.4
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
5.0 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)Facelift 2008Turbo 3.8
304 hp/t
227 kW/t
3.3 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
238 hp/t
178 kW/t
4.2 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (997)Facelift 2008Turbo 3.8Porsche911 Cabriolet (991)Carrera 3.4
Power
500 hp
373 kW
350 hp
261 kW
Torque
650 Nm
479 lb-ft
390 Nm
288 lb-ft
Acceleration
3.8 s
5.0 s
Top speed
312 km/h
194 mph
286 km/h
178 mph
Lightness
1,645 kg
3,627 lb
1,470 kg
3,241 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,491 mm
176.8 in
Height
1,299 mm
51.1 in
Range score
573 km
356 mi
696 km
432 mi
CO2 score
275 g/km
216 g/km
Trunk score
105 L
3.7 cu ft
290 L
10.2 cu ft
Power-to-weight score
304 hp/t
227 kW/t
3.3 kg/hp
238 hp/t
178 kW/t
4.2 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) Facelift 2008 Turbo 3.8Porsche 911 Cabriolet (991) Carrera 3.4
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK9.2 L/100 km25.6 mpg US30.7 mpg UK
Cost / 100 km20.47 LC100 km16.10 LC100 km
Cost / 100 mi32.95 LC100 mi25.91 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,380 L365 US gal304 UK gal
Annual fuel cost3,071 LC/year2,415 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Has 150 hp more
  • Has 260 Nm more
  • Is 1.2 s quicker from 0-100 km/h
  • Has 26 km/h (16 mph) higher top speed
  • Has 66 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Porsche 911 Cabriolet (991) Carrera 3.4

  • Is 175 kg lighter
  • Uses 2.5 L/100 km less fuel
  • Has 123 km (76 mi) more estimated range
  • Has 185 L more trunk volume
  • Emits 59 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (997) Turbo 3.8
Porsche 911 Cabriolet (991) Carrera 3.4
Compare selected cars
2 vehicles selected

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