Car comparison

Porsche 911 (991) Carrera 3.4vsPorsche 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)

Carrera 3.4

350 hp3436 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2011-2015
VS

Porsche 718 Cayman (982)

S 2.5

350 hp2497 ccGasolineRWDDual-clutchTurbochargedCoupe2019-2020

Comparison overview

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

Best choices

Porsche 911 (991) Carrera 3.4

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    287 km/h
    178 mph
  • Most powerful
    350 hp
    261 kW
  • Lowest combined fuel consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest city consumption
    11.3 L/100 km
    20.8 mpg US
    25.0 mpg UK
  • Lowest CO2 emissions
    191 g/km
  • Best estimated range
    780 km
    485 mi
  • Largest trunk
    340 L
  • Best overall score
    66/100
  • Best economy score
    85/100
  • Best practicality score
    48/100

Porsche 718 Cayman (982) S 2.5

  • Highest torque
    420 Nm
    310 lb-ft
  • Lightest
    1,385 kg
    3,053 lb
  • Best power-to-weight
    253 hp/t
    188 kW/t
    4.0 kg/hp
  • Lowest highway consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Best performance score
    75/100

Specification comparison

Specification comparison
ModelPorsche911 (991)Carrera 3.4Porsche718 Cayman (982)S 2.5
Power
350hp261kW
350hp261kW
Torque
390Nm288lb-ft
420Nm310lb-ft
Curb weight
1,420kg3,131lb
1,385kg3,053lb
Gross weight
1,815kg4,001lb
1,695kg3,737lb
Top speed
287 km/h
178 mph
285 km/h
177 mph
To 99% top speed
60.0s99% target: 284 km/h / 177 mph
Calculated
60.0s99% target: 282 km/h / 175 mph
Calculated
0-100 km/h
4.4s
4.4s
0-200 km/h
13.6s
Calculated
13.7s
Calculated
0-60 mph
4.2s
Calculated
4.2s
Calculated
Fuel consumption
8.2L/100 km28.7mpg US34.4mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Fuel consumption city
11.3L/100 km20.8mpg US25.0mpg UK
11.8L/100 km19.9mpg US23.9mpg UK
Fuel consumption highway
6.6L/100 km35.6mpg US42.8mpg UK
6.5L/100 km36.2mpg US43.5mpg UK
Quarter mile
12.3s
Calculated
12.4s
Calculated
Power-to-weight
246hp/t184kW/t112hp/1000 lb
Calculated
253hp/t188kW/t115hp/1000 lb
Calculated
Torque-to-weight
275Nm/t184lb-ft/ton
Calculated
303Nm/t203lb-ft/ton
Calculated
Estimated range
780km485mi
Calculated
753km468mi
Calculated
Displacement
3,436cc210cu in
2,497cc152cu in
Length
4,491mm177in
4,379mm172in
Width
1,808mm71in
1,801mm71in
Height
1,303mm51in
1,295mm51in
Wheelbase
2,450mm96in
2,475mm97in
Front track
1,532mm60in
1,515mm60in
Rear track
1,518mm60in
1,539mm61in
Trunk volume
340L
-
Max trunk volume-
150L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
191g/km
193g/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 3.4Porsche 718 Cayman (982) S 2.5PowerTorque
  • Porsche 911 (991) Carrera 3.4: Power / Torque
  • Porsche 718 Cayman (982) S 2.5: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991)Carrera 3.47,400 rpm5,600 rpm7,650 rpm
Porsche718 Cayman (982)S 2.56,500 rpm2,100-4,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991)Carrera 3.4Porsche718 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
13.6 s
13.7 s
Top speed
287 km/h
178 mph
285 km/h
177 mph
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.5 s
5.5 s
1/8 mile
201 m
8.1 s
8.1 s
1000 ft
305 m
10.4 s
10.4 s
1/4 mile
402 m
12.3 s
12.4 s
Trap speed
1/4 mile
402 m
191 km/h
119 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 3.4
350 hp
261 kW
Porsche718 Cayman (982)S 2.5
350 hp
261 kW

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera 3.4
390 Nm
288 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)Carrera 3.4
1,420 kg
3,131 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)Carrera 3.4
287 km/h
178 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)Carrera 3.44.4 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)Carrera 3.4
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
Porsche718 Cayman (982)S 2.5
8.5 L/100 km
27.7 mpg US
33.2 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)Carrera 3.4
246 hp/t
184 kW/t
4.1 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)Carrera 3.4
780 km
485 mi
Porsche718 Cayman (982)S 2.5
753 km
468 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991)Carrera 3.4
350 hp
261 kW
4.4 s
287 km/h
178 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)Carrera 3.4
Power
350 hp
261 kW
0-100 km/h4.4 s
Top speed
287 km/h
178 mph
Doors/seats
2 doors
4 seats
Trunk
340 L
12.0 cu ft
Length
4,491 mm
176.8 in
Height
1,303 mm
51.3 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
150 L
5.3 cu ft
Length
4,379 mm
172.4 in
Height
1,295 mm
51.0 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 3.4
Power
350 hp
261 kW
0-100 km/h4.4 s
Top speed
287 km/h
178 mph
8.2 L/100 km
28.7 mpg US
34.4 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
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

Porsche 718 Cayman (982) S 2.5 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 3.4
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
4.4 s
Porsche718 Cayman (982)S 2.5
8.5 L/100 km
27.7 mpg US
33.2 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 3.4
246 hp/t
184 kW/t
4.1 kg/hp
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
Porsche718 Cayman (982)S 2.5
253 hp/t
188 kW/t
4.0 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)Carrera 3.4Porsche718 Cayman (982)S 2.5
Power
350 hp
261 kW
350 hp
261 kW
Torque
390 Nm
288 lb-ft
420 Nm
310 lb-ft
Acceleration
4.4 s
4.4 s
Top speed
287 km/h
178 mph
285 km/h
177 mph
Lightness
1,420 kg
3,131 lb
1,385 kg
3,053 lb
Fuel consumption
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
340 L
12.0 cu ft
Length
4,491 mm
176.8 in
Height
1,303 mm
51.3 in
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,379 mm
172.4 in
Height
1,295 mm
51.0 in
Range score
780 km
485 mi
753 km
468 mi
CO2 score
191 g/km
193 g/km
Trunk score
340 L
12.0 cu ft
150 L
5.3 cu ft
Power-to-weight score
246 hp/t
184 kW/t
4.1 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) Carrera 3.4Porsche 718 Cayman (982) S 2.5
Consumption8.2 L/100 km28.7 mpg US34.4 mpg UK8.5 L/100 km27.7 mpg US33.2 mpg UK
Cost / 100 km14.35 LC100 km14.88 LC100 km
Cost / 100 mi23.09 LC100 mi23.94 LC100 mi
Annual fuel used1,230 L325 US gal271 UK gal1,275 L337 US gal280 UK gal
Annual fuel cost2,153 LC/year2,231 LC/year

Head-to-head comparisons

Porsche 911 (991) Carrera 3.4

  • Has 2 km/h (1 mph) higher top speed
  • Uses 0.3 L/100 km less fuel
  • Has 28 km (17 mi) more estimated range
  • Has 190 L more trunk volume
  • Emits 2 g/km less CO2

Pros

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

Cons

  • Heaviest

Porsche 718 Cayman (982) S 2.5

  • Has 30 Nm more
  • Is 35 kg lighter
  • Has 6 hp/t better power-to-weight

Pros

  • Highest torque
  • Lightest
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991) Carrera 3.4
Porsche 718 Cayman (982) S 2.5
Compare selected cars
2 vehicles selected

Popular comparisons

Carrera 3.4
Carrera 3.0
VS
Porsche911 (991)Carrera 3.4vsPorsche911 (991 II)Carrera 3.0
S 2.5
S 2.5
VS
Porsche718 Cayman (982)S 2.5vsPorsche718 Boxster (982)S 2.5
Carrera 3.4
Carrera 4 3.0
VS
Porsche911 (991)Carrera 3.4vsPorsche911 (992)Carrera 4 3.0
S 2.5
4.0
VS
Porsche718 Cayman (982)S 2.5vsPorsche718 Spyder (982)4.0
Carrera 3.4
Carrera 3.4
VS
Porsche911 (991)Carrera 3.4vsPorsche911 Cabriolet (991)Carrera 3.4
Carrera 3.4
GT3 3.6
VS
Porsche911 (991)Carrera 3.4vsPorsche911 (997)GT3 3.6
Carrera 3.4
GT3 RS 3.8
VS
Porsche911 (991)Carrera 3.4vsPorsche911 (997)Facelift 2008GT3 RS 3.8
S 2.5
GTS 3.4
VS
Porsche718 Cayman (982)S 2.5vsPorscheCayman (981C)GTS 3.4
Carrera 3.4
4 3.4
VS
Porsche911 (991)Carrera 3.4vsPorsche911 Targa (991)4 3.4
S 2.5
Carrera 4 3.4
VS
Porsche718 Cayman (982)S 2.5vsPorsche911 (991)Carrera 4 3.4
Carrera 3.4
GT3 3.6
VS
Porsche911 (991)Carrera 3.4vsPorsche911 (996)GT3 3.6
S 2.5
Carrera 3.0
VS
Porsche718 Cayman (982)S 2.5vsPorsche911 (992)Facelift 2024Carrera 3.0
Porsche 911 (991) Carrera 3.4 vs Porsche 718 Cayman (982) S 2.5 - car comparison - FastVsFaster