Car comparison

Porsche 911 (991) Carrera 4S 3.8vsPorsche 718 Cayman (982) GTS 4.0

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

New comparison

Porsche 911 (991)

Carrera 4S 3.8

400 hp3800 ccGasolineAWDManualNaturally aspiratedCoupe2012-2015
VS

Porsche 718 Cayman (982)

GTS 4.0

400 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 4S 3.8

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    299 km/h
    186 mph
  • Most powerful
    400 hp
    298 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Lowest combined fuel consumption
    9.9 L/100 km
    23.8 mpg US
    28.5 mpg UK
  • Lowest city consumption
    13.8 L/100 km
    17.0 mpg US
    20.5 mpg UK
  • Lowest highway consumption
    7.6 L/100 km
    30.9 mpg US
    37.2 mpg UK
  • Best estimated range
    687 km
    427 mi
  • Largest trunk
    385 L
  • Best overall score
    70/100
  • Best performance score
    79/100
  • Best economy score
    80/100
  • Best practicality score
    50/100

Specification comparison

Specification comparison
ModelPorsche911 (991)Carrera 4S 3.8Porsche718 Cayman (982)GTS 4.0
Power
400hp298kW
400hp298kW
Torque
440Nm325lb-ft
420Nm310lb-ft
Curb weight
1,465kg3,230lb
1,405kg3,097lb
Gross weight
1,875kg4,134lb
1,700kg3,748lb
Top speed
299 km/h
186 mph
293 km/h
182 mph
To 99% top speed
64.1s99% target: 296 km/h / 184 mph
Calculated
67.7s99% target: 290 km/h / 180 mph
Calculated
0-100 km/h
4.5s
4.5s
0-200 km/h
13.4s
Calculated
14.1s
0-60 mph
4.3s
Calculated
4.3s
Calculated
Fuel consumption
9.9L/100 km23.8mpg US28.5mpg UK
10.8L/100 km21.8mpg US26.2mpg UK
Fuel consumption city
13.8L/100 km17mpg US20.5mpg UK
14.7L/100 km16mpg US19.2mpg UK
Fuel consumption highway
7.6L/100 km30.9mpg US37.2mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
12.4s
Calculated
12.5s
Calculated
Power-to-weight
273hp/t204kW/t124hp/1000 lb
Calculated
285hp/t212kW/t129hp/1000 lb
Calculated
Torque-to-weight
300Nm/t201lb-ft/ton
Calculated
299Nm/t200lb-ft/ton
Calculated
Estimated range
687km427mi
Calculated
593km368mi
Calculated
Displacement
3,800cc232cu in
3,995cc244cu in
Length
4,491mm177in
4,405mm173in
Width
1,852mm73in
1,801mm71in
Height
1,296mm51in
1,276mm50in
Wheelbase
2,450mm96in
2,475mm97in
Front track
1,538mm61in
1,527mm60in
Rear track
1,552mm61in
1,535mm60in
Trunk volume
385L
270L
Doors
2
2
Seats
4
2
Fuel tank
68L
64L
CO2 emissions
233g/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 4S 3.8Porsche 718 Cayman (982) GTS 4.0PowerTorque
  • Porsche 911 (991) Carrera 4S 3.8: Power / Torque
  • Porsche 718 Cayman (982) GTS 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991)Carrera 4S 3.87,400 rpm5,600 rpm7,650 rpm
Porsche718 Cayman (982)GTS 4.07,000 rpm5,000-6,500 rpm7,800 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991)Carrera 4S 3.8Porsche718 Cayman (982)GTS 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
4.3 s
0-100 km/h
0-62 mph
4.5 s
4.5 s
0-200 km/h
0-124 mph
13.4 s
14.1 s
Top speed
299 km/h
186 mph
293 km/h
182 mph
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.5 s
5.5 s
1/8 mile
201 m
8.2 s
8.2 s
1000 ft
305 m
10.5 s
10.5 s
1/4 mile
402 m
12.4 s
12.5 s
Trap speed
1/4 mile
402 m
192 km/h
119 mph
188 km/h
117 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera 4S 3.8
400 hp
298 kW
Porsche718 Cayman (982)GTS 4.0
400 hp
298 kW

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera 4S 3.8
440 Nm
325 lb-ft
Porsche718 Cayman (982)GTS 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 4S 3.8
1,465 kg
3,230 lb
Porsche718 Cayman (982)GTS 4.0
1,405 kg
3,097 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 4S 3.8
299 km/h
186 mph
Porsche718 Cayman (982)GTS 4.0
293 km/h
182 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 4S 3.84.5 s
Porsche718 Cayman (982)GTS 4.04.5 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 4S 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
Porsche718 Cayman (982)GTS 4.0
10.8 L/100 km
21.8 mpg US
26.2 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991) Carrera 4S 3.8 and Porsche 718 Cayman (982) GTS 4.0: 0.9 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 4S 3.8
273 hp/t
204 kW/t
3.7 kg/hp
Porsche718 Cayman (982)GTS 4.0
285 hp/t
212 kW/t
3.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera 4S 3.8
687 km
427 mi
Porsche718 Cayman (982)GTS 4.0
593 km
368 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991)Carrera 4S 3.8
400 hp
298 kW
4.5 s
299 km/h
186 mph
Porsche718 Cayman (982)GTS 4.0
400 hp
298 kW
4.5 s
293 km/h
182 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 4S 3.8
Power
400 hp
298 kW
0-100 km/h4.5 s
Top speed
299 km/h
186 mph
Doors/seats
2 doors
4 seats
Trunk
385 L
13.6 cu ft
Length
4,491 mm
176.8 in
Height
1,296 mm
51.0 in
Porsche718 Cayman (982)GTS 4.0
Power
400 hp
298 kW
0-100 km/h4.5 s
Top speed
293 km/h
182 mph
Doors/seats
2 doors
2 seats
Trunk
270 L
9.5 cu ft
Length
4,405 mm
173.4 in
Height
1,276 mm
50.2 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
Porsche911 (991)Carrera 4S 3.8
Power
400 hp
298 kW
0-100 km/h4.5 s
Top speed
299 km/h
186 mph
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
Porsche718 Cayman (982)GTS 4.0
Power
400 hp
298 kW
0-100 km/h4.5 s
Top speed
293 km/h
182 mph
10.8 L/100 km
21.8 mpg US
26.2 mpg UK

Porsche 911 (991) Carrera 4S 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 4S 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
4.5 s
Porsche718 Cayman (982)GTS 4.0
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
4.5 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 (991)Carrera 4S 3.8
273 hp/t
204 kW/t
3.7 kg/hp
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
Porsche718 Cayman (982)GTS 4.0
285 hp/t
212 kW/t
3.5 kg/hp
10.8 L/100 km
21.8 mpg US
26.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)Carrera 4S 3.8Porsche718 Cayman (982)GTS 4.0
Power
400 hp
298 kW
400 hp
298 kW
Torque
440 Nm
325 lb-ft
420 Nm
310 lb-ft
Acceleration
4.5 s
4.5 s
Top speed
299 km/h
186 mph
293 km/h
182 mph
Lightness
1,465 kg
3,230 lb
1,405 kg
3,097 lb
Fuel consumption
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
385 L
13.6 cu ft
Length
4,491 mm
176.8 in
Height
1,296 mm
51.0 in
Doors/seats
2 doors
2 seats
Trunk
270 L
9.5 cu ft
Length
4,405 mm
173.4 in
Height
1,276 mm
50.2 in
Range score
687 km
427 mi
593 km
368 mi
CO2 score
233 g/km
-
Trunk score
385 L
13.6 cu ft
270 L
9.5 cu ft
Power-to-weight score
273 hp/t
204 kW/t
3.7 kg/hp
285 hp/t
212 kW/t
3.5 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 4S 3.8Porsche 718 Cayman (982) GTS 4.0
Consumption9.9 L/100 km23.8 mpg US28.5 mpg UK10.8 L/100 km21.8 mpg US26.2 mpg UK
Cost / 100 km17.33 LC100 km18.90 LC100 km
Cost / 100 mi27.88 LC100 mi30.42 LC100 mi
Annual fuel used1,485 L392 US gal327 UK gal1,620 L428 US gal356 UK gal
Annual fuel cost2,599 LC/year2,835 LC/year

Head-to-head comparisons

Porsche 911 (991) Carrera 4S 3.8

  • Has 20 Nm more
  • Has 6 km/h (4 mph) higher top speed
  • Uses 0.9 L/100 km less fuel
  • Has 94 km (59 mi) more estimated range
  • Has 115 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 estimated range
  • Largest trunk

Cons

  • Heaviest

Porsche 718 Cayman (982) GTS 4.0

  • Is 60 kg lighter
  • Has 12 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991) Carrera 4S 3.8
Porsche 718 Cayman (982) GTS 4.0
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2 vehicles selected

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