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 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2014-2015
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) Carrera GTS 3.8

  • Fastest top speed
    304 km/h
    189 mph
  • Most powerful
    430 hp
    321 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Lightest
    1,445 kg
    3,186 lb
  • Best power-to-weight
    298 hp/t
    222 kW/t
    3.4 kg/hp
  • Lowest combined fuel consumption
    8.7 L/100 km
    27.0 mpg US
    32.5 mpg UK
  • Lowest city consumption
    12.2 L/100 km
    19.3 mpg US
    23.2 mpg UK
  • Lowest highway consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Best estimated range
    736 km
    457 mi
  • Largest trunk
    385 L
  • Best overall score
    72/100
  • Best performance score
    82/100
  • Best economy score
    83/100
  • 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
430Nm317lb-ft
Curb weight
1,445kg3,186lb
1,450kg3,197lb
Gross weight
1,870kg4,123lb
1,780kg3,924lb
Top speed
304 km/h
189 mph
302 km/h
188 mph
To 99% top speed
56.2s99% target: 301 km/h / 187 mph
Calculated
80.8s99% target: 299 km/h / 186 mph
Calculated
0-100 km/h
4.0s
3.9s
0-200 km/h
11.6s
Calculated
13.4s
0-60 mph
3.8s
Calculated
3.7s
Calculated
Fuel consumption
8.7L/100 km27mpg US32.5mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Fuel consumption city
12.2L/100 km19.3mpg US23.2mpg UK
13.7L/100 km17.2mpg US20.6mpg UK
Fuel consumption highway
6.7L/100 km35.1mpg US42.2mpg UK
8.1L/100 km29mpg US34.9mpg UK
Quarter mile
11.8s
Calculated
12.0s
Calculated
Power-to-weight
298hp/t222kW/t135hp/1000 lb
Calculated
290hp/t216kW/t131hp/1000 lb
Calculated
Torque-to-weight
304Nm/t204lb-ft/ton
Calculated
297Nm/t198lb-ft/ton
Calculated
Estimated range
736km457mi
Calculated
627km390mi
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
270L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
202g/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 rpm5,500 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
3.8 s
3.7 s
0-100 km/h
0-62 mph
4.0 s
3.9 s
0-200 km/h
0-124 mph
11.6 s
13.4 s
Top speed
304 km/h
189 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
7.8 s
7.8 s
1000 ft
305 m
10.0 s
10.1 s
1/4 mile
402 m
11.8 s
12.0 s
Trap speed
1/4 mile
402 m
201 km/h
125 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
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)Carrera GTS 3.8
1,445 kg
3,186 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)Carrera GTS 3.8
304 km/h
189 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)Carrera GTS 3.84.0 s
Porsche718 Cayman (982)GT4 4.03.9 s

Although Porsche 911 (991) Carrera GTS 3.8 has more power, Porsche 718 Cayman (982) GT4 4.0 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 718 Cayman (982) GT4 4.0 and Porsche 911 (991) Carrera GTS 3.8: 0.1 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
8.7 L/100 km
27.0 mpg US
32.5 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) Carrera GTS 3.8 and Porsche 718 Cayman (982) GT4 4.0: 1.5 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)Carrera GTS 3.8
298 hp/t
222 kW/t
3.4 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)Carrera GTS 3.8
736 km
457 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)Carrera GTS 3.8
430 hp
321 kW
4.0 s
304 km/h
189 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)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.0 s
Top speed
304 km/h
189 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/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)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.0 s
Top speed
304 km/h
189 mph
8.7 L/100 km
27.0 mpg US
32.5 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) 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
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.0 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)Carrera GTS 3.8
298 hp/t
222 kW/t
3.4 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 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)Carrera GTS 3.8Porsche718 Cayman (982)GT4 4.0
Power
430 hp
321 kW
420 hp
313 kW
Torque
440 Nm
325 lb-ft
430 Nm
317 lb-ft
Acceleration
4.0 s
3.9 s
Top speed
304 km/h
189 mph
302 km/h
188 mph
Lightness
1,445 kg
3,186 lb
1,450 kg
3,197 lb
Fuel consumption
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
10.2 L/100 km
23.1 mpg US
27.7 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
270 L
9.5 cu ft
Length
4,456 mm
175.4 in
Height
1,269 mm
50.0 in
Range score
736 km
457 mi
627 km
390 mi
CO2 score
202 g/km
-
Trunk score
385 L
13.6 cu ft
270 L
9.5 cu ft
Power-to-weight score
298 hp/t
222 kW/t
3.4 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) Carrera GTS 3.8Porsche 718 Cayman (982) GT4 4.0
Consumption8.7 L/100 km27 mpg US32.5 mpg UK10.2 L/100 km23.1 mpg US27.7 mpg UK
Cost / 100 km15.22 LC100 km17.85 LC100 km
Cost / 100 mi24.50 LC100 mi28.73 LC100 mi
Annual fuel used1,305 L345 US gal287 UK gal1,530 L404 US gal337 UK gal
Annual fuel cost2,284 LC/year2,678 LC/year

Head-to-head comparisons

Porsche 911 (991) Carrera GTS 3.8

  • Has 10 hp more
  • Has 10 Nm more
  • Is 5 kg lighter
  • Has 2 km/h (1 mph) higher top speed
  • Uses 1.5 L/100 km less fuel
  • Has 8 hp/t better power-to-weight
  • Has 108 km (67 mi) more estimated range
  • Has 115 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h

Porsche 718 Cayman (982) GT4 4.0

  • Is 0.1 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison

Cons

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

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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