Car comparison

Porsche 911 (991 II) Carrera 3.0vsPorsche 718 Cayman (982) S 2.5

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

New comparison

Porsche 911 (991 II)

Carrera 3.0

370 hp2981 ccGasolineRWDDual-clutchTwin-turboCoupe2015-2018
VS

Porsche 718 Cayman (982)

S 2.5

350 hp2497 ccGasolineRWDDual-clutchTurbochargedCoupe2016-2018

Comparison overview

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

Best choices

Porsche 911 (991 II) Carrera 3.0

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    293 km/h
    182 mph
  • Most powerful
    370 hp
    276 kW
  • Highest torque
    450 Nm
    332 lb-ft
  • Best power-to-weight
    255 hp/t
    190 kW/t
    3.9 kg/hp
  • Lowest highway consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Best overall score
    65/100
  • Best performance score
    77/100
  • Best economy score
    87/100
  • Best practicality score
    41/100

Porsche 718 Cayman (982) S 2.5

  • Lightest
    1,385 kg
    3,053 lb
  • Lowest combined fuel consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Lowest city consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest CO2 emissions
    167 g/km
  • Best estimated range
    877 km
    545 mi
  • Largest trunk
    334 L

Specification comparison

Specification comparison
ModelPorsche911 (991 II)Carrera 3.0Porsche718 Cayman (982)S 2.5
Power
370hp276kW
350hp261kW
Torque
450Nm332lb-ft
420Nm310lb-ft
Curb weight
1,450kg3,197lb
1,385kg3,053lb
Gross weight
1,890kg4,167lb
1,695kg3,737lb
Top speed
293 km/h
182 mph
285 km/h
177 mph
To 99% top speed
61.0s99% target: 290 km/h / 180 mph
Calculated
73.7s99% target: 282 km/h / 175 mph
Calculated
0-100 km/h
4.4s
4.4s
0-200 km/h
13.3s
Calculated
15.0s
0-60 mph
4.2s
Calculated
4.2s
Calculated
Fuel consumption
7.4L/100 km31.8mpg US38.2mpg UK
7.3L/100 km32.2mpg US38.7mpg UK
Fuel consumption city
9.9L/100 km23.8mpg US28.5mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption highway
6L/100 km39.2mpg US47.1mpg UK
6L/100 km39.2mpg US47.1mpg UK
Quarter mile
12.3s
Calculated
12.5s
Calculated
Power-to-weight
255hp/t190kW/t116hp/1000 lb
Calculated
253hp/t188kW/t115hp/1000 lb
Calculated
Torque-to-weight
310Nm/t208lb-ft/ton
Calculated
303Nm/t203lb-ft/ton
Calculated
Estimated range
865km537mi
Calculated
877km545mi
Calculated
Displacement
2,981cc182cu in
2,497cc152cu in
Length
4,499mm177in
4,379mm172in
Width
1,808mm71in
1,801mm71in
Height
1,294mm51in
1,284mm51in
Wheelbase
2,450mm96in
2,475mm97in
Front track-
1,515mm60in
Rear track-
1,540mm61in
Trunk volume
145L
334L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
169g/km
167g/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 3.0Porsche 718 Cayman (982) S 2.5PowerTorque
  • Porsche 911 (991 II) Carrera 3.0: Power / Torque
  • Porsche 718 Cayman (982) S 2.5: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)Carrera 3.06,500 rpm1,700-5,000 rpm6,750 rpm
Porsche718 Cayman (982)S 2.56,500 rpm1,900-4,500 rpm7,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)Carrera 3.0Porsche718 Cayman (982)S 2.5
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
13.3 s
15.0 s
Top speed
293 km/h
182 mph
285 km/h
177 mph
Drag race simulation
60 ft
18 m
2.1 s
2.0 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
12.3 s
12.5 s
Trap speed
1/4 mile
402 m
192 km/h
120 mph
184 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera 3.0
370 hp
276 kW
Porsche718 Cayman (982)S 2.5
350 hp
261 kW

Porsche 911 (991 II) Carrera 3.0 has 20 hp more than Porsche 718 Cayman (982) S 2.5.

The biggest power difference is between Porsche 718 Cayman (982) S 2.5 and Porsche 911 (991 II) Carrera 3.0: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera 3.0
450 Nm
332 lb-ft
Porsche718 Cayman (982)S 2.5
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 II)Carrera 3.0
1,450 kg
3,197 lb
Porsche718 Cayman (982)S 2.5
1,385 kg
3,053 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 3.0
293 km/h
182 mph
Porsche718 Cayman (982)S 2.5
285 km/h
177 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 3.04.4 s
Porsche718 Cayman (982)S 2.54.4 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 II)Carrera 3.0
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Porsche718 Cayman (982)S 2.5
7.3 L/100 km
32.2 mpg US
38.7 mpg UK

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 3.0
255 hp/t
190 kW/t
3.9 kg/hp
Porsche718 Cayman (982)S 2.5
253 hp/t
188 kW/t
4.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera 3.0
865 km
537 mi
Porsche718 Cayman (982)S 2.5
877 km
545 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991 II)Carrera 3.0
370 hp
276 kW
4.4 s
293 km/h
182 mph
Porsche718 Cayman (982)S 2.5
350 hp
261 kW
4.4 s
285 km/h
177 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 3.0
Power
370 hp
276 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,294 mm
50.9 in
Porsche718 Cayman (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.4 s
Top speed
285 km/h
177 mph
Doors/seats
2 doors
2 seats
Trunk
334 L
11.8 cu ft
Length
4,379 mm
172.4 in
Height
1,284 mm
50.6 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 3.0
Power
370 hp
276 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Porsche718 Cayman (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.4 s
Top speed
285 km/h
177 mph
7.3 L/100 km
32.2 mpg US
38.7 mpg UK

Porsche 911 (991 II) Carrera 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 3.0
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
4.4 s
Porsche718 Cayman (982)S 2.5
7.3 L/100 km
32.2 mpg US
38.7 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 II)Carrera 3.0
255 hp/t
190 kW/t
3.9 kg/hp
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Porsche718 Cayman (982)S 2.5
253 hp/t
188 kW/t
4.0 kg/hp
7.3 L/100 km
32.2 mpg US
38.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)Carrera 3.0Porsche718 Cayman (982)S 2.5
Power
370 hp
276 kW
350 hp
261 kW
Torque
450 Nm
332 lb-ft
420 Nm
310 lb-ft
Acceleration
4.4 s
4.4 s
Top speed
293 km/h
182 mph
285 km/h
177 mph
Lightness
1,450 kg
3,197 lb
1,385 kg
3,053 lb
Fuel consumption
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,294 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk
334 L
11.8 cu ft
Length
4,379 mm
172.4 in
Height
1,284 mm
50.6 in
Range score
865 km
537 mi
877 km
545 mi
CO2 score
169 g/km
167 g/km
Trunk score
145 L
5.1 cu ft
334 L
11.8 cu ft
Power-to-weight score
255 hp/t
190 kW/t
3.9 kg/hp
253 hp/t
188 kW/t
4.0 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 (991 II) Carrera 3.0Porsche 718 Cayman (982) S 2.5
Consumption7.4 L/100 km31.8 mpg US38.2 mpg UK7.3 L/100 km32.2 mpg US38.7 mpg UK
Cost / 100 km12.95 LC100 km12.78 LC100 km
Cost / 100 mi20.84 LC100 mi20.56 LC100 mi
Annual fuel used1,110 L293 US gal244 UK gal1,095 L289 US gal241 UK gal
Annual fuel cost1,943 LC/year1,916 LC/year

Head-to-head comparisons

Porsche 911 (991 II) Carrera 3.0

  • Has 20 hp more
  • Has 30 Nm more
  • Has 8 km/h (5 mph) higher top speed
  • Has 2 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 718 Cayman (982) S 2.5

  • Is 65 kg lighter
  • Uses 0.1 L/100 km less fuel
  • Has 12 km (7 mi) more estimated range
  • Has 189 L more trunk volume
  • Emits 2 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) Carrera 3.0
Porsche 718 Cayman (982) S 2.5
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