Car comparison

Porsche 911 Cabriolet (997) · Facelift 2008 Turbo 3.8vsPorsche 911 Cabriolet (991) Carrera 4 GTS 3.8

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 ccGasolineAWDDual-clutchTurbochargedCabriolet / convertible2009-2011
VS

Porsche 911 Cabriolet (991)

Carrera 4 GTS 3.8

430 hp3800 ccGasolineAWDManualNaturally aspiratedCabriolet / convertible2014-2015

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
    3.7 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
    299 hp/t
    223 kW/t
    3.3 kg/hp
  • Best overall score
    76/100
  • Best performance score
    90/100
  • Best practicality score
    47/100

Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8

  • Lightest
    1,540 kg
    3,395 lb
  • Lowest combined fuel consumption
    10.0 L/100 km
    23.5 mpg US
    28.2 mpg UK
  • Lowest city consumption
    13.9 L/100 km
    16.9 mpg US
    20.3 mpg UK
  • Lowest highway consumption
    7.7 L/100 km
    30.5 mpg US
    36.7 mpg UK
  • Lowest CO2 emissions
    235 g/km
  • Best estimated range
    680 km
    423 mi
  • Largest trunk
    285 L
  • Best economy score
    80/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (997)Facelift 2008Turbo 3.8Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
Power
500hp373kW
430hp321kW
Torque
650Nm479lb-ft
440Nm325lb-ft
Curb weight
1,670kg3,682lb
1,540kg3,395lb
Gross weight
2,020kg4,453lb
1,935kg4,266lb
Top speed
312 km/h
194 mph
303 km/h
188 mph
To 99% top speed
54.9s99% target: 309 km/h / 192 mph
Calculated
65.2s99% target: 300 km/h / 186 mph
Calculated
0-100 km/h
3.7s
4.6s
0-200 km/h
10.7s
Calculated
13.5s
Calculated
0-60 mph
3.5s
Calculated
4.4s
Calculated
Fuel consumption
11.5L/100 km20.5mpg US24.6mpg UK
10L/100 km23.5mpg US28.2mpg UK
Fuel consumption city
16.7L/100 km14.1mpg US16.9mpg UK
13.9L/100 km16.9mpg US20.3mpg UK
Fuel consumption highway
8.2L/100 km28.7mpg US34.4mpg UK
7.7L/100 km30.5mpg US36.7mpg UK
Quarter mile
11.4s
Calculated
12.5s
Calculated
Power-to-weight
299hp/t223kW/t136hp/1000 lb
Calculated
279hp/t208kW/t127hp/1000 lb
Calculated
Torque-to-weight
389Nm/t260lb-ft/ton
Calculated
286Nm/t191lb-ft/ton
Calculated
Estimated range
583km362mi
Calculated
680km423mi
Calculated
Displacement
3,800cc232cu in
3,800cc232cu in
Length
4,450mm175in
4,509mm178in
Width
1,852mm73in
1,852mm73in
Height
1,300mm51in
1,294mm51in
Wheelbase
2,350mm93in
2,450mm96in
Front track-
1,538mm61in
Rear track-
1,560mm61in
Trunk volume-
285L
Max trunk volume
105L
-
Doors
2
2
Seats
4
4
Fuel tank
67L
68L
CO2 emissions
270g/km
235g/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 4 GTS 3.8PowerTorque
  • Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: Power / Torque
  • Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8: 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 4 GTS 3.87,500 rpm5,750 rpm7,750 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 4 GTS 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.5 s
4.4 s
0-100 km/h
0-62 mph
3.7 s
4.6 s
0-200 km/h
0-124 mph
10.7 s
13.5 s
Top speed
312 km/h
194 mph
303 km/h
188 mph
Drag race simulation
60 ft
18 m
2.0 s
2.2 s
330 ft
101 m
5.1 s
5.6 s
1/8 mile
201 m
7.6 s
8.3 s
1000 ft
305 m
9.7 s
10.6 s
1/4 mile
402 m
11.4 s
12.5 s
Trap speed
1/4 mile
402 m
207 km/h
129 mph
192 km/h
119 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 4 GTS 3.8
430 hp
321 kW

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 has 70 hp more than Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8.

The biggest power difference is between Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8 and Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: 70 hp (52 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 4 GTS 3.8
440 Nm
325 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
1,670 kg
3,682 lb
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
1,540 kg
3,395 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 4 GTS 3.8
303 km/h
188 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 3.83.7 s
Porsche911 Cabriolet (991)Carrera 4 GTS 3.84.6 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 4 GTS 3.8: 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)Facelift 2008Turbo 3.8
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
10.0 L/100 km
23.5 mpg US
28.2 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8 and Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: 1.5 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
299 hp/t
223 kW/t
3.3 kg/hp
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
279 hp/t
208 kW/t
3.6 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
583 km
362 mi
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
680 km
423 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
3.7 s
312 km/h
194 mph
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
430 hp
321 kW
4.6 s
303 km/h
188 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/h3.7 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
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.6 s
Top speed
303 km/h
188 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,294 mm
50.9 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/h3.7 s
Top speed
312 km/h
194 mph
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.6 s
Top speed
303 km/h
188 mph
10.0 L/100 km
23.5 mpg US
28.2 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
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
3.7 s
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
4.6 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
299 hp/t
223 kW/t
3.3 kg/hp
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
279 hp/t
208 kW/t
3.6 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (997)Facelift 2008Turbo 3.8Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
Power
500 hp
373 kW
430 hp
321 kW
Torque
650 Nm
479 lb-ft
440 Nm
325 lb-ft
Acceleration
3.7 s
4.6 s
Top speed
312 km/h
194 mph
303 km/h
188 mph
Lightness
1,670 kg
3,682 lb
1,540 kg
3,395 lb
Fuel consumption
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
10.0 L/100 km
23.5 mpg US
28.2 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
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,294 mm
50.9 in
Range score
583 km
362 mi
680 km
423 mi
CO2 score
270 g/km
235 g/km
Trunk score
105 L
3.7 cu ft
285 L
10.1 cu ft
Power-to-weight score
299 hp/t
223 kW/t
3.3 kg/hp
279 hp/t
208 kW/t
3.6 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 4 GTS 3.8
Consumption11.5 L/100 km20.5 mpg US24.6 mpg UK10 L/100 km23.5 mpg US28.2 mpg UK
Cost / 100 km20.13 LC100 km17.50 LC100 km
Cost / 100 mi32.39 LC100 mi28.16 LC100 mi
Annual fuel used1,725 L456 US gal379 UK gal1,500 L396 US gal330 UK gal
Annual fuel cost3,019 LC/year2,625 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Has 70 hp more
  • Has 210 Nm more
  • Is 0.9 s quicker from 0-100 km/h
  • Has 9 km/h (6 mph) higher top speed
  • Has 20 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 4 GTS 3.8

  • Is 130 kg lighter
  • Uses 1.5 L/100 km less fuel
  • Has 97 km (61 mi) more estimated range
  • Has 180 L more trunk volume
  • Emits 35 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 4 GTS 3.8
Compare selected cars
2 vehicles selected

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