Car comparison

Porsche 911 Cabriolet (997) Turbo 3.6vsPorsche 911 (991) GT3 3.8

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 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2007-2008
VS

Porsche 911 (991)

GT3 3.8

475 hp3799 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2013-2017

Comparison overview

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

Best choices

Porsche 911 (991) GT3 3.8

  • Quickest 0-100 km/h
    3.5 s
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    332 hp/t
    248 kW/t
    3.0 kg/hp
  • Lowest combined fuel consumption
    12.4 L/100 km
    19.0 mpg US
    22.8 mpg UK
  • Lowest city consumption
    18.9 L/100 km
    12.4 mpg US
    14.9 mpg UK
  • Lowest highway consumption
    8.9 L/100 km
    26.4 mpg US
    31.7 mpg UK
  • Best estimated range
    516 km
    321 mi
  • Best economy score
    74/100

Porsche 911 Cabriolet (997) Turbo 3.6

  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Most powerful
    480 hp
    358 kW
  • Highest torque
    620 Nm
    457 lb-ft
  • Best overall score
    76/100
  • Best performance score
    89/100
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (997)Turbo 3.6Porsche911 (991)GT3 3.8
Power
480hp358kW
475hp354kW
Torque
620Nm457lb-ft
440Nm325lb-ft
Curb weight
1,655kg3,649lb
1,430kg3,153lb
Gross weight
2,000kg4,409lb
1,720kg3,792lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
315 km/h
196 mph
To 99% top speed
58.0s99% target: 317 km/h / 197 mph
Calculated
50.5s99% target: 312 km/h / 194 mph
Calculated
0-100 km/h
3.8s
3.5s
0-200 km/h
10.8s
Calculated
9.9s
Calculated
0-60 mph
3.6s
Calculated
3.3s
Calculated
Fuel consumption
13.7L/100 km17.2mpg US20.6mpg UK
12.4L/100 km19mpg US22.8mpg UK
Fuel consumption city
20.2L/100 km11.6mpg US14.0mpg UK
18.9L/100 km12.4mpg US14.9mpg UK
Fuel consumption highway
9.6L/100 km24.5mpg US29.4mpg UK
8.9L/100 km26.4mpg US31.7mpg UK
Quarter mile
11.5s
Calculated
11.2s
Calculated
Power-to-weight
290hp/t216kW/t132hp/1000 lb
Calculated
332hp/t248kW/t151hp/1000 lb
Calculated
Torque-to-weight
375Nm/t251lb-ft/ton
Calculated
308Nm/t206lb-ft/ton
Calculated
Estimated range
467km290mi
Calculated
516km321mi
Calculated
Displacement
3,600cc220cu in
3,799cc232cu in
Length
4,427mm174in
4,545mm179in
Width
1,808mm71in
1,852mm73in
Height
1,310mm52in
1,269mm50in
Wheelbase
2,350mm93in
2,457mm97in
Front track-
1,551mm61in
Rear track-
1,555mm61in
Trunk volume-
385L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions-
289g/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 3.6Porsche 911 (991) GT3 3.8PowerTorque
  • Porsche 911 Cabriolet (997) Turbo 3.6: Power / Torque
  • Porsche 911 (991) GT3 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (997)Turbo 3.66,000 rpm1,950 rpm6,250 rpm
Porsche911 (991)GT3 3.88,250 rpm6,250 rpm8,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (997)Turbo 3.6Porsche911 (991)GT3 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.6 s
3.3 s
0-100 km/h
0-62 mph
3.8 s
3.5 s
0-200 km/h
0-124 mph
10.8 s
9.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
315 km/h
196 mph
Drag race simulation
60 ft
18 m
2.0 s
2.0 s
330 ft
101 m
5.2 s
5.0 s
1/8 mile
201 m
7.6 s
7.4 s
1000 ft
305 m
9.8 s
9.4 s
1/4 mile
402 m
11.5 s
11.2 s
Trap speed
1/4 mile
402 m
207 km/h
129 mph
213 km/h
132 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
Porsche911 (991)GT3 3.8
475 hp
354 kW

Porsche 911 Cabriolet (997) Turbo 3.6 has 5 hp more than Porsche 911 (991) GT3 3.8.

The biggest power difference is between Porsche 911 (991) GT3 3.8 and Porsche 911 Cabriolet (997) Turbo 3.6: 5 hp (4 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
Porsche911 (991)GT3 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)Turbo 3.6
1,655 kg
3,649 lb
Porsche911 (991)GT3 3.8
1,430 kg
3,153 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
Porsche911 (991)GT3 3.8
315 km/h
196 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 3.63.8 s
Porsche911 (991)GT3 3.83.5 s

Although Porsche 911 Cabriolet (997) Turbo 3.6 has more power, Porsche 911 (991) GT3 3.8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 (991) GT3 3.8 and Porsche 911 Cabriolet (997) Turbo 3.6: 0.3 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
13.7 L/100 km
17.2 mpg US
20.6 mpg UK
Porsche911 (991)GT3 3.8
12.4 L/100 km
19.0 mpg US
22.8 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991) GT3 3.8 and Porsche 911 Cabriolet (997) Turbo 3.6: 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
Porsche911 Cabriolet (997)Turbo 3.6
290 hp/t
216 kW/t
3.4 kg/hp
Porsche911 (991)GT3 3.8
332 hp/t
248 kW/t
3.0 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
467 km
290 mi
Porsche911 (991)GT3 3.8
516 km
321 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
3.8 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Porsche911 (991)GT3 3.8
475 hp
354 kW
3.5 s
315 km/h
196 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/h3.8 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
Porsche911 (991)GT3 3.8
Power
475 hp
354 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
Doors/seats
2 doors
2 seats
Trunk
385 L
13.6 cu ft
Length
4,545 mm
178.9 in
Height
1,269 mm
50.0 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/h3.8 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
13.7 L/100 km
17.2 mpg US
20.6 mpg UK
Porsche911 (991)GT3 3.8
Power
475 hp
354 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
12.4 L/100 km
19.0 mpg US
22.8 mpg UK

Porsche 911 (991) GT3 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)Turbo 3.6
13.7 L/100 km
17.2 mpg US
20.6 mpg UK
3.8 s
Porsche911 (991)GT3 3.8
12.4 L/100 km
19.0 mpg US
22.8 mpg UK
3.5 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
13.7 L/100 km
17.2 mpg US
20.6 mpg UK
Porsche911 (991)GT3 3.8
332 hp/t
248 kW/t
3.0 kg/hp
12.4 L/100 km
19.0 mpg US
22.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (997)Turbo 3.6Porsche911 (991)GT3 3.8
Power
480 hp
358 kW
475 hp
354 kW
Torque
620 Nm
457 lb-ft
440 Nm
325 lb-ft
Acceleration
3.8 s
3.5 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
315 km/h
196 mph
Lightness
1,655 kg
3,649 lb
1,430 kg
3,153 lb
Fuel consumption
13.7 L/100 km
17.2 mpg US
20.6 mpg UK
12.4 L/100 km
19.0 mpg US
22.8 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
2 seats
Trunk
385 L
13.6 cu ft
Length
4,545 mm
178.9 in
Height
1,269 mm
50.0 in
Range score
467 km
290 mi
516 km
321 mi
CO2 score
-
289 g/km
Trunk score
-
385 L
13.6 cu ft
Power-to-weight score
290 hp/t
216 kW/t
3.4 kg/hp
332 hp/t
248 kW/t
3.0 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 3.6Porsche 911 (991) GT3 3.8
Consumption13.7 L/100 km17.2 mpg US20.6 mpg UK12.4 L/100 km19 mpg US22.8 mpg UK
Cost / 100 km23.97 LC100 km21.70 LC100 km
Cost / 100 mi38.58 LC100 mi34.92 LC100 mi
Annual fuel used2,055 L543 US gal452 UK gal1,860 L491 US gal409 UK gal
Annual fuel cost3,596 LC/year3,255 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (997) Turbo 3.6

  • Has 5 hp more
  • Has 180 Nm more
  • Has 5 km/h (3 mph) higher top speed

Pros

  • Highest top speed
  • Most powerful
  • Highest torque

Cons

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

Porsche 911 (991) GT3 3.8

  • Is 225 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 1.3 L/100 km less fuel
  • Has 42 hp/t better power-to-weight
  • Has 49 km (30 mi) more estimated range

Pros

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

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (997) Turbo 3.6
Porsche 911 (991) GT3 3.8
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Porsche 911 Cabriolet (997) Turbo 3.6 vs Porsche 911 (991) GT3 3.8 - car comparison - FastVsFaster