Car comparison

Porsche 911 Cabriolet (991) Carrera GTS 3.8vsPorsche 718 Spyder (982) 4.0

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

New comparison

Porsche 911 Cabriolet (991)

Carrera GTS 3.8

430 hp3800 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2014-2015
VS

Porsche 718 Spyder (982)

4.0

420 hp3995 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2020-present

Comparison overview

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

Best choices

Porsche 911 Cabriolet (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
  • Lowest combined fuel consumption
    9.7 L/100 km
    24.2 mpg US
    29.1 mpg UK
  • Lowest city consumption
    13.7 L/100 km
    17.2 mpg US
    20.6 mpg UK
  • Lowest highway consumption
    7.6 L/100 km
    30.9 mpg US
    37.2 mpg UK
  • Best estimated range
    660 km
    410 mi
  • Largest trunk
    285 L
  • Best overall score
    68/100
  • Best performance score
    80/100
  • Best economy score
    81/100
  • Best practicality score
    44/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Carrera GTS 3.8Porsche718 Spyder (982)4.0
Power
430hp321kW
420hp313kW
Torque
440Nm325lb-ft
420Nm310lb-ft
Curb weight
1,495kg3,296lb
1,420kg3,131lb
Gross weight
1,905kg4,200lb
1,720kg3,792lb
Top speed
304 km/h
189 mph
301 km/h
187 mph
To 99% top speed
64.4s99% target: 301 km/h / 187 mph
Calculated
72.1s99% target: 298 km/h / 185 mph
Calculated
0-100 km/h
4.6s
4.4s
0-200 km/h
13.4s
Calculated
13.8s
0-60 mph
4.4s
Calculated
4.2s
Calculated
Fuel consumption
9.7L/100 km24.2mpg US29.1mpg UK
10.9L/100 km21.6mpg US25.9mpg UK
Fuel consumption city
13.7L/100 km17.2mpg US20.6mpg UK
15L/100 km15.7mpg US18.8mpg UK
Fuel consumption highway
7.6L/100 km30.9mpg US37.2mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
12.5s
Calculated
12.4s
Calculated
Power-to-weight
288hp/t214kW/t130hp/1000 lb
Calculated
296hp/t221kW/t134hp/1000 lb
Calculated
Torque-to-weight
294Nm/t197lb-ft/ton
Calculated
296Nm/t198lb-ft/ton
Calculated
Estimated range
660km410mi
Calculated
587km365mi
Calculated
Displacement
3,800cc232cu in
3,995cc244cu in
Length
4,509mm178in
4,430mm174in
Width
1,852mm73in
1,801mm71in
Height
1,292mm51in
1,258mm50in
Wheelbase
2,450mm96in
2,484mm98in
Front track
1,538mm61in
1,538mm61in
Rear track
1,560mm61in
1,534mm60in
Trunk volume
285L
150L
Doors
2
2
Seats
4
2
Fuel tank
64L
64L
CO2 emissions
228g/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 Cabriolet (991) Carrera GTS 3.8Porsche 718 Spyder (982) 4.0PowerTorque
  • Porsche 911 Cabriolet (991) Carrera GTS 3.8: Power / Torque
  • Porsche 718 Spyder (982) 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Carrera GTS 3.87,500 rpm5,750 rpm7,750 rpm
Porsche718 Spyder (982)4.07,600 rpm5,000-6,800 rpm8,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Carrera GTS 3.8Porsche718 Spyder (982)4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.4 s
4.2 s
0-100 km/h
0-62 mph
4.6 s
4.4 s
0-200 km/h
0-124 mph
13.4 s
13.8 s
Top speed
304 km/h
189 mph
301 km/h
187 mph
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.6 s
5.4 s
1/8 mile
201 m
8.3 s
8.1 s
1000 ft
305 m
10.6 s
10.5 s
1/4 mile
402 m
12.5 s
12.4 s
Trap speed
1/4 mile
402 m
193 km/h
120 mph
190 km/h
118 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera GTS 3.8
430 hp
321 kW
Porsche718 Spyder (982)4.0
420 hp
313 kW

Porsche 911 Cabriolet (991) Carrera GTS 3.8 has 10 hp more than Porsche 718 Spyder (982) 4.0.

The biggest power difference is between Porsche 718 Spyder (982) 4.0 and Porsche 911 Cabriolet (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 Cabriolet (991)Carrera GTS 3.8
440 Nm
325 lb-ft
Porsche718 Spyder (982)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 Cabriolet (991)Carrera GTS 3.8
1,495 kg
3,296 lb
Porsche718 Spyder (982)4.0
1,420 kg
3,131 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 Cabriolet (991)Carrera GTS 3.8
304 km/h
189 mph
Porsche718 Spyder (982)4.0
301 km/h
187 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera GTS 3.84.6 s
Porsche718 Spyder (982)4.04.4 s

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

The biggest 0-100 km/h difference is between Porsche 718 Spyder (982) 4.0 and Porsche 911 Cabriolet (991) Carrera GTS 3.8: 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 Cabriolet (991)Carrera GTS 3.8
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Porsche718 Spyder (982)4.0
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Carrera GTS 3.8 and Porsche 718 Spyder (982) 4.0: 1.2 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 Cabriolet (991)Carrera GTS 3.8
288 hp/t
214 kW/t
3.5 kg/hp
Porsche718 Spyder (982)4.0
296 hp/t
221 kW/t
3.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera GTS 3.8
660 km
410 mi
Porsche718 Spyder (982)4.0
587 km
365 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (991)Carrera GTS 3.8
430 hp
321 kW
4.6 s
304 km/h
189 mph
Porsche718 Spyder (982)4.0
420 hp
313 kW
4.4 s
301 km/h
187 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 Cabriolet (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.6 s
Top speed
304 km/h
189 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,292 mm
50.9 in
Porsche718 Spyder (982)4.0
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
301 km/h
187 mph
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,430 mm
174.4 in
Height
1,258 mm
49.5 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 Cabriolet (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.6 s
Top speed
304 km/h
189 mph
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Porsche718 Spyder (982)4.0
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
301 km/h
187 mph
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

Porsche 911 Cabriolet (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 Cabriolet (991)Carrera GTS 3.8
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
4.6 s
Porsche718 Spyder (982)4.0
10.9 L/100 km
21.6 mpg US
25.9 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 Cabriolet (991)Carrera GTS 3.8
288 hp/t
214 kW/t
3.5 kg/hp
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Porsche718 Spyder (982)4.0
296 hp/t
221 kW/t
3.4 kg/hp
10.9 L/100 km
21.6 mpg US
25.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (991)Carrera GTS 3.8Porsche718 Spyder (982)4.0
Power
430 hp
321 kW
420 hp
313 kW
Torque
440 Nm
325 lb-ft
420 Nm
310 lb-ft
Acceleration
4.6 s
4.4 s
Top speed
304 km/h
189 mph
301 km/h
187 mph
Lightness
1,495 kg
3,296 lb
1,420 kg
3,131 lb
Fuel consumption
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,292 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,430 mm
174.4 in
Height
1,258 mm
49.5 in
Range score
660 km
410 mi
587 km
365 mi
CO2 score
228 g/km
-
Trunk score
285 L
10.1 cu ft
150 L
5.3 cu ft
Power-to-weight score
288 hp/t
214 kW/t
3.5 kg/hp
296 hp/t
221 kW/t
3.4 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 Cabriolet (991) Carrera GTS 3.8Porsche 718 Spyder (982) 4.0
Consumption9.7 L/100 km24.2 mpg US29.1 mpg UK10.9 L/100 km21.6 mpg US25.9 mpg UK
Cost / 100 km16.97 LC100 km19.08 LC100 km
Cost / 100 mi27.32 LC100 mi30.70 LC100 mi
Annual fuel used1,455 L384 US gal320 UK gal1,635 L432 US gal360 UK gal
Annual fuel cost2,546 LC/year2,861 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Carrera GTS 3.8

  • Has 10 hp more
  • Has 20 Nm more
  • Has 3 km/h (2 mph) higher top speed
  • Uses 1.2 L/100 km less fuel
  • Has 73 km (45 mi) more estimated range
  • Has 135 L more trunk volume

Pros

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

Cons

  • Slowest 0-100 km/h
  • Heaviest

Porsche 718 Spyder (982) 4.0

  • Is 75 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 8 hp/t better power-to-weight

Pros

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

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (991) Carrera GTS 3.8
Porsche 718 Spyder (982) 4.0
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