Car comparison

Porsche 911 (991) Carrera GTS 3.8vsPorsche 718 Cayman (982) GT4 4.0

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

New comparison

Porsche 911 (991)

Carrera GTS 3.8

430 hp3800 ccGasolineRWDManualNaturally aspiratedCoupe2014-2015
VS

Porsche 718 Cayman (982)

GT4 4.0

420 hp3995 ccGasolineRWDManualNaturally aspiratedCoupe2020-present

Comparison overview

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

Best choices

Porsche 911 (991) Carrera GTS 3.8

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    306 km/h
    190 mph
  • Most powerful
    430 hp
    321 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Best power-to-weight
    302 hp/t
    225 kW/t
    3.3 kg/hp
  • Lowest combined fuel consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest city consumption
    13.7 L/100 km
    17.2 mpg US
    20.6 mpg UK
  • Lowest highway consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Best estimated range
    674 km
    419 mi
  • Largest trunk
    385 L
  • Best overall score
    71/100
  • Best performance score
    81/100
  • Best economy score
    81/100
  • Best practicality score
    50/100

Specification comparison

Specification comparison
ModelPorsche911 (991)Carrera GTS 3.8Porsche718 Cayman (982)GT4 4.0
Power
430hp321kW
420hp313kW
Torque
440Nm325lb-ft
420Nm310lb-ft
Curb weight
1,425kg3,142lb
1,420kg3,131lb
Gross weight
1,850kg4,079lb
1,750kg3,858lb
Top speed
306 km/h
190 mph
304 km/h
189 mph
To 99% top speed
61.8s99% target: 303 km/h / 188 mph
Calculated
74.3s99% target: 301 km/h / 187 mph
Calculated
0-100 km/h
4.4s
4.4s
0-200 km/h
12.7s
Calculated
13.8s
0-60 mph
4.2s
Calculated
4.2s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
10.9L/100 km21.6mpg US25.9mpg UK
Fuel consumption city
13.7L/100 km17.2mpg US20.6mpg UK
15L/100 km15.7mpg US18.8mpg UK
Fuel consumption highway
7.5L/100 km31.4mpg US37.7mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
12.2s
Calculated
12.4s
Calculated
Power-to-weight
302hp/t225kW/t137hp/1000 lb
Calculated
296hp/t221kW/t134hp/1000 lb
Calculated
Torque-to-weight
309Nm/t207lb-ft/ton
Calculated
296Nm/t198lb-ft/ton
Calculated
Estimated range
674km419mi
Calculated
587km365mi
Calculated
Displacement
3,800cc232cu in
3,995cc244cu in
Length
4,509mm178in
4,456mm175in
Width
1,852mm73in
1,801mm71in
Height
1,295mm51in
1,269mm50in
Wheelbase
2,450mm96in
2,484mm98in
Front track
1,538mm61in
1,538mm61in
Rear track
1,560mm61in
1,534mm60in
Trunk volume
385L
150L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
223g/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 (991) Carrera GTS 3.8Porsche 718 Cayman (982) GT4 4.0PowerTorque
  • Porsche 911 (991) Carrera GTS 3.8: Power / Torque
  • Porsche 718 Cayman (982) GT4 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991)Carrera GTS 3.87,500 rpm5,750 rpm7,750 rpm
Porsche718 Cayman (982)GT4 4.07,600 rpm5,000-6,800 rpm8,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991)Carrera GTS 3.8Porsche718 Cayman (982)GT4 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.2 s
0-100 km/h
0-62 mph
4.4 s
4.4 s
0-200 km/h
0-124 mph
12.7 s
13.8 s
Top speed
306 km/h
190 mph
304 km/h
189 mph
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.5 s
5.4 s
1/8 mile
201 m
8.1 s
8.1 s
1000 ft
305 m
10.4 s
10.5 s
1/4 mile
402 m
12.2 s
12.4 s
Trap speed
1/4 mile
402 m
196 km/h
122 mph
190 km/h
118 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
430 hp
321 kW
Porsche718 Cayman (982)GT4 4.0
420 hp
313 kW

Porsche 911 (991) Carrera GTS 3.8 has 10 hp more than Porsche 718 Cayman (982) GT4 4.0.

The biggest power difference is between Porsche 718 Cayman (982) GT4 4.0 and Porsche 911 (991) Carrera GTS 3.8: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
440 Nm
325 lb-ft
Porsche718 Cayman (982)GT4 4.0
420 Nm
310 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
1,425 kg
3,142 lb
Porsche718 Cayman (982)GT4 4.0
1,420 kg
3,131 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 (991)Carrera GTS 3.8
306 km/h
190 mph
Porsche718 Cayman (982)GT4 4.0
304 km/h
189 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.84.4 s
Porsche718 Cayman (982)GT4 4.04.4 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 (991)Carrera GTS 3.8
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991) Carrera GTS 3.8 and Porsche 718 Cayman (982) GT4 4.0: 1.4 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 (991)Carrera GTS 3.8
302 hp/t
225 kW/t
3.3 kg/hp
Porsche718 Cayman (982)GT4 4.0
296 hp/t
221 kW/t
3.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
674 km
419 mi
Porsche718 Cayman (982)GT4 4.0
587 km
365 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991)Carrera GTS 3.8
430 hp
321 kW
4.4 s
306 km/h
190 mph
Porsche718 Cayman (982)GT4 4.0
420 hp
313 kW
4.4 s
304 km/h
189 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 (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.4 s
Top speed
306 km/h
190 mph
Doors/seats
2 doors
4 seats
Trunk
385 L
13.6 cu ft
Length
4,509 mm
177.5 in
Height
1,295 mm
51.0 in
Porsche718 Cayman (982)GT4 4.0
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
304 km/h
189 mph
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,456 mm
175.4 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 (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.4 s
Top speed
306 km/h
190 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
304 km/h
189 mph
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

Porsche 911 (991) Carrera GTS 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 (991)Carrera GTS 3.8
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.4 s
Porsche718 Cayman (982)GT4 4.0
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
4.4 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 (991)Carrera GTS 3.8
302 hp/t
225 kW/t
3.3 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
296 hp/t
221 kW/t
3.4 kg/hp
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)Carrera GTS 3.8Porsche718 Cayman (982)GT4 4.0
Power
430 hp
321 kW
420 hp
313 kW
Torque
440 Nm
325 lb-ft
420 Nm
310 lb-ft
Acceleration
4.4 s
4.4 s
Top speed
306 km/h
190 mph
304 km/h
189 mph
Lightness
1,425 kg
3,142 lb
1,420 kg
3,131 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
385 L
13.6 cu ft
Length
4,509 mm
177.5 in
Height
1,295 mm
51.0 in
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,456 mm
175.4 in
Height
1,269 mm
50.0 in
Range score
674 km
419 mi
587 km
365 mi
CO2 score
223 g/km
-
Trunk score
385 L
13.6 cu ft
150 L
5.3 cu ft
Power-to-weight score
302 hp/t
225 kW/t
3.3 kg/hp
296 hp/t
221 kW/t
3.4 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 (991) Carrera GTS 3.8Porsche 718 Cayman (982) GT4 4.0
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK10.9 L/100 km21.6 mpg US25.9 mpg UK
Cost / 100 km16.63 LC100 km19.08 LC100 km
Cost / 100 mi26.76 LC100 mi30.70 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,635 L432 US gal360 UK gal
Annual fuel cost2,494 LC/year2,861 LC/year

Head-to-head comparisons

Porsche 911 (991) Carrera GTS 3.8

  • Has 10 hp more
  • Has 20 Nm more
  • Has 2 km/h (1 mph) higher top speed
  • Uses 1.4 L/100 km less fuel
  • Has 6 hp/t better power-to-weight
  • Has 87 km (54 mi) more estimated range
  • Has 235 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991) Carrera GTS 3.8
Porsche 718 Cayman (982) GT4 4.0
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