Car comparison

Porsche 911 (991 II) Carrera S 3.0vsPorsche 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 II)

Carrera S 3.0

420 hp2981 ccGasolineRWDDual-clutchTwin-turboCoupe2015-2018
VS

Porsche 718 Cayman (982)

GT4 4.0

420 hp3995 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2020-present

Comparison overview

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

Best choices

Porsche 911 (991 II) Carrera S 3.0

  • Fastest top speed
    306 km/h
    190 mph
  • Most powerful
    420 hp
    313 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest combined fuel consumption
    7.7 L/100 km
    30.5 mpg US
    36.7 mpg UK
  • Lowest city consumption
    10.1 L/100 km
    23.3 mpg US
    28.0 mpg UK
  • Lowest highway consumption
    6.4 L/100 km
    36.8 mpg US
    44.1 mpg UK
  • Best estimated range
    831 km
    516 mi
  • Best overall score
    69/100
  • Best performance score
    82/100
  • Best economy score
    86/100
  • Best practicality score
    41/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)Carrera S 3.0Porsche718 Cayman (982)GT4 4.0
Power
420hp313kW
420hp313kW
Torque
500Nm369lb-ft
430Nm317lb-ft
Curb weight
1,460kg3,219lb
1,450kg3,197lb
Gross weight
1,915kg4,222lb
1,780kg3,924lb
Top speed
306 km/h
190 mph
302 km/h
188 mph
To 99% top speed
58.5s99% target: 303 km/h / 188 mph
Calculated
80.8s99% target: 299 km/h / 186 mph
Calculated
0-100 km/h
4.1s
3.9s
0-200 km/h
11.9s
Calculated
13.4s
0-60 mph
3.9s
Calculated
3.7s
Calculated
Fuel consumption
7.7L/100 km30.5mpg US36.7mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Fuel consumption city
10.1L/100 km23.3mpg US28.0mpg UK
13.7L/100 km17.2mpg US20.6mpg UK
Fuel consumption highway
6.4L/100 km36.8mpg US44.1mpg UK
8.1L/100 km29mpg US34.9mpg UK
Quarter mile
11.9s
Calculated
12.0s
Calculated
Power-to-weight
288hp/t215kW/t130hp/1000 lb
Calculated
290hp/t216kW/t131hp/1000 lb
Calculated
Torque-to-weight
342Nm/t229lb-ft/ton
Calculated
297Nm/t198lb-ft/ton
Calculated
Estimated range
831km516mi
Calculated
627km390mi
Calculated
Displacement
2,981cc182cu in
3,995cc244cu in
Length
4,499mm177in
4,456mm175in
Width
1,808mm71in
1,801mm71in
Height
1,302mm51in
1,269mm50in
Wheelbase
2,450mm96in
2,484mm98in
Front track
1,543mm61in
1,538mm61in
Rear track
1,518mm60in
1,534mm60in
Trunk volume
145L
270L
Max trunk volume
260L
-
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
174g/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 II) Carrera S 3.0Porsche 718 Cayman (982) GT4 4.0PowerTorque
  • Porsche 911 (991 II) Carrera S 3.0: Power / Torque
  • Porsche 718 Cayman (982) GT4 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)Carrera S 3.06,500 rpm1,700-5,000 rpm6,750 rpm
Porsche718 Cayman (982)GT4 4.07,600 rpm5,500 rpm8,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)Carrera S 3.0Porsche718 Cayman (982)GT4 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.9 s
3.7 s
0-100 km/h
0-62 mph
4.1 s
3.9 s
0-200 km/h
0-124 mph
11.9 s
13.4 s
Top speed
306 km/h
190 mph
302 km/h
188 mph
Drag race simulation
60 ft
18 m
2.1 s
1.9 s
330 ft
101 m
5.3 s
5.1 s
1/8 mile
201 m
7.9 s
7.8 s
1000 ft
305 m
10.1 s
10.1 s
1/4 mile
402 m
11.9 s
12.0 s
Trap speed
1/4 mile
402 m
200 km/h
124 mph
190 km/h
118 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera S 3.0
420 hp
313 kW
Porsche718 Cayman (982)GT4 4.0
420 hp
313 kW

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera S 3.0
500 Nm
369 lb-ft
Porsche718 Cayman (982)GT4 4.0
430 Nm
317 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera S 3.0
1,460 kg
3,219 lb
Porsche718 Cayman (982)GT4 4.0
1,450 kg
3,197 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 II)Carrera S 3.0
306 km/h
190 mph
Porsche718 Cayman (982)GT4 4.0
302 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 (991 II)Carrera S 3.04.1 s
Porsche718 Cayman (982)GT4 4.03.9 s

The biggest 0-100 km/h difference is between Porsche 718 Cayman (982) GT4 4.0 and Porsche 911 (991 II) Carrera S 3.0: 0.2 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 (991 II)Carrera S 3.0
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991 II) Carrera S 3.0 and Porsche 718 Cayman (982) GT4 4.0: 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 (991 II)Carrera S 3.0
288 hp/t
215 kW/t
3.5 kg/hp
Porsche718 Cayman (982)GT4 4.0
290 hp/t
216 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 II)Carrera S 3.0
831 km
516 mi
Porsche718 Cayman (982)GT4 4.0
627 km
390 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991 II)Carrera S 3.0
420 hp
313 kW
4.1 s
306 km/h
190 mph
Porsche718 Cayman (982)GT4 4.0
420 hp
313 kW
3.9 s
302 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 (991 II)Carrera S 3.0
Power
420 hp
313 kW
0-100 km/h4.1 s
Top speed
306 km/h
190 mph
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,302 mm
51.3 in
Porsche718 Cayman (982)GT4 4.0
Power
420 hp
313 kW
0-100 km/h3.9 s
Top speed
302 km/h
188 mph
Doors/seats
2 doors
2 seats
Trunk
270 L
9.5 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 II)Carrera S 3.0
Power
420 hp
313 kW
0-100 km/h4.1 s
Top speed
306 km/h
190 mph
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
Power
420 hp
313 kW
0-100 km/h3.9 s
Top speed
302 km/h
188 mph
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

Porsche 911 (991 II) Carrera S 3.0 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 II)Carrera S 3.0
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
4.1 s
Porsche718 Cayman (982)GT4 4.0
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
3.9 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 II)Carrera S 3.0
288 hp/t
215 kW/t
3.5 kg/hp
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
Porsche718 Cayman (982)GT4 4.0
290 hp/t
216 kW/t
3.5 kg/hp
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)Carrera S 3.0Porsche718 Cayman (982)GT4 4.0
Power
420 hp
313 kW
420 hp
313 kW
Torque
500 Nm
369 lb-ft
430 Nm
317 lb-ft
Acceleration
4.1 s
3.9 s
Top speed
306 km/h
190 mph
302 km/h
188 mph
Lightness
1,460 kg
3,219 lb
1,450 kg
3,197 lb
Fuel consumption
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,302 mm
51.3 in
Doors/seats
2 doors
2 seats
Trunk
270 L
9.5 cu ft
Length
4,456 mm
175.4 in
Height
1,269 mm
50.0 in
Range score
831 km
516 mi
627 km
390 mi
CO2 score
174 g/km
-
Trunk score
145 L
5.1 cu ft
270 L
9.5 cu ft
Power-to-weight score
288 hp/t
215 kW/t
3.5 kg/hp
290 hp/t
216 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 II) Carrera S 3.0Porsche 718 Cayman (982) GT4 4.0
Consumption7.7 L/100 km30.5 mpg US36.7 mpg UK10.2 L/100 km23.1 mpg US27.7 mpg UK
Cost / 100 km13.48 LC100 km17.85 LC100 km
Cost / 100 mi21.69 LC100 mi28.73 LC100 mi
Annual fuel used1,155 L305 US gal254 UK gal1,530 L404 US gal337 UK gal
Annual fuel cost2,021 LC/year2,678 LC/year

Head-to-head comparisons

Porsche 911 (991 II) Carrera S 3.0

  • Has 70 Nm more
  • Has 4 km/h (2 mph) higher top speed
  • Uses 2.5 L/100 km less fuel
  • Has 204 km (127 mi) more estimated range

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Smallest trunk

Porsche 718 Cayman (982) GT4 4.0

  • Is 10 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 2 hp/t better power-to-weight
  • Has 125 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) Carrera S 3.0
Porsche 718 Cayman (982) GT4 4.0
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