Car comparison

Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8vsPorsche 718 Boxster (982) GTS 4.0

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

New comparison

Porsche 911 Cabriolet (991)

Carrera 4 GTS 3.8

430 hp3800 ccGasolineAWDDual-clutchNaturally aspiratedCabriolet / convertible2014-2015
VS

Porsche 718 Boxster (982)

GTS 4.0

400 hp3995 ccGasolineRWDDual-clutchNaturally 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 4 GTS 3.8

  • Fastest top speed
    301 km/h
    187 mph
  • Most powerful
    430 hp
    321 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Lowest combined fuel consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest city consumption
    12.5 L/100 km
    18.8 mpg US
    22.6 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest CO2 emissions
    214 g/km
  • Best estimated range
    739 km
    459 mi
  • Largest trunk
    285 L
  • Best overall score
    68/100
  • Best performance score
    80/100
  • Best economy score
    82/100
  • Best practicality score
    44/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Carrera 4 GTS 3.8Porsche718 Boxster (982)GTS 4.0
Power
430hp321kW
400hp298kW
Torque
440Nm325lb-ft
430Nm317lb-ft
Curb weight
1,560kg3,439lb
1,435kg3,164lb
Gross weight
1,955kg4,310lb
1,730kg3,814lb
Top speed
301 km/h
187 mph
288 km/h
179 mph
To 99% top speed
59.4s99% target: 298 km/h / 185 mph
Calculated
70.2s99% target: 285 km/h / 177 mph
Calculated
0-100 km/h
4.2s
4.0s
0-200 km/h
12.4s
Calculated
13.7s
0-60 mph
4.0s
Calculated
3.8s
Calculated
Fuel consumption
9.2L/100 km25.6mpg US30.7mpg UK
9.6L/100 km24.5mpg US29.4mpg UK
Fuel consumption city
12.5L/100 km18.8mpg US22.6mpg UK
13L/100 km18.1mpg US21.7mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile
12.1s
Calculated
12.1s
Calculated
Power-to-weight
276hp/t206kW/t125hp/1000 lb
Calculated
279hp/t208kW/t126hp/1000 lb
Calculated
Torque-to-weight
282Nm/t189lb-ft/ton
Calculated
300Nm/t200lb-ft/ton
Calculated
Estimated range
739km459mi
Calculated
667km414mi
Calculated
Displacement
3,800cc232cu in
3,995cc244cu in
Length
4,509mm178in
4,391mm173in
Width
1,852mm73in
1,801mm71in
Height
1,294mm51in
1,262mm50in
Wheelbase
2,450mm96in
2,475mm97in
Front track
1,538mm61in
1,527mm60in
Rear track
1,560mm61in
1,535mm60in
Trunk volume
285L
120L
Doors
2
2
Seats
4
2
Fuel tank
68L
64L
CO2 emissions
214g/km
219g/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 4 GTS 3.8Porsche 718 Boxster (982) GTS 4.0PowerTorque
  • Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8: Power / Torque
  • Porsche 718 Boxster (982) GTS 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Carrera 4 GTS 3.87,500 rpm5,750 rpm7,750 rpm
Porsche718 Boxster (982)GTS 4.07,000 rpm5,500 rpm7,800 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Carrera 4 GTS 3.8Porsche718 Boxster (982)GTS 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.0 s
3.8 s
0-100 km/h
0-62 mph
4.2 s
4.0 s
0-200 km/h
0-124 mph
12.4 s
13.7 s
Top speed
301 km/h
187 mph
288 km/h
179 mph
Drag race simulation
60 ft
18 m
2.1 s
1.9 s
330 ft
101 m
5.4 s
5.2 s
1/8 mile
201 m
8.0 s
7.8 s
1000 ft
305 m
10.2 s
10.1 s
1/4 mile
402 m
12.1 s
12.1 s
Trap speed
1/4 mile
402 m
197 km/h
123 mph
189 km/h
117 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
430 hp
321 kW
Porsche718 Boxster (982)GTS 4.0
400 hp
298 kW

Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8 has 30 hp more than Porsche 718 Boxster (982) GTS 4.0.

The biggest power difference is between Porsche 718 Boxster (982) GTS 4.0 and Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
440 Nm
325 lb-ft
Porsche718 Boxster (982)GTS 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 Cabriolet (991)Carrera 4 GTS 3.8
1,560 kg
3,439 lb
Porsche718 Boxster (982)GTS 4.0
1,435 kg
3,164 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 4 GTS 3.8
301 km/h
187 mph
Porsche718 Boxster (982)GTS 4.0
288 km/h
179 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 4 GTS 3.84.2 s
Porsche718 Boxster (982)GTS 4.04.0 s

Although Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8 has more power, Porsche 718 Boxster (982) GTS 4.0 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 718 Boxster (982) GTS 4.0 and Porsche 911 Cabriolet (991) Carrera 4 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 4 GTS 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche718 Boxster (982)GTS 4.0
9.6 L/100 km
24.5 mpg US
29.4 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 Cabriolet (991)Carrera 4 GTS 3.8
276 hp/t
206 kW/t
3.6 kg/hp
Porsche718 Boxster (982)GTS 4.0
279 hp/t
208 kW/t
3.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
739 km
459 mi
Porsche718 Boxster (982)GTS 4.0
667 km
414 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (991)Carrera 4 GTS 3.8
430 hp
321 kW
4.2 s
301 km/h
187 mph
Porsche718 Boxster (982)GTS 4.0
400 hp
298 kW
4.0 s
288 km/h
179 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 4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.2 s
Top speed
301 km/h
187 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,294 mm
50.9 in
Porsche718 Boxster (982)GTS 4.0
Power
400 hp
298 kW
0-100 km/h4.0 s
Top speed
288 km/h
179 mph
Doors/seats
2 doors
2 seats
Trunk
120 L
4.2 cu ft
Length
4,391 mm
172.9 in
Height
1,262 mm
49.7 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 4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.2 s
Top speed
301 km/h
187 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche718 Boxster (982)GTS 4.0
Power
400 hp
298 kW
0-100 km/h4.0 s
Top speed
288 km/h
179 mph
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Porsche 911 Cabriolet (991) Carrera 4 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 4 GTS 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
4.2 s
Porsche718 Boxster (982)GTS 4.0
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
4.0 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 4 GTS 3.8
276 hp/t
206 kW/t
3.6 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche718 Boxster (982)GTS 4.0
279 hp/t
208 kW/t
3.6 kg/hp
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (991)Carrera 4 GTS 3.8Porsche718 Boxster (982)GTS 4.0
Power
430 hp
321 kW
400 hp
298 kW
Torque
440 Nm
325 lb-ft
430 Nm
317 lb-ft
Acceleration
4.2 s
4.0 s
Top speed
301 km/h
187 mph
288 km/h
179 mph
Lightness
1,560 kg
3,439 lb
1,435 kg
3,164 lb
Fuel consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,294 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk
120 L
4.2 cu ft
Length
4,391 mm
172.9 in
Height
1,262 mm
49.7 in
Range score
739 km
459 mi
667 km
414 mi
CO2 score
214 g/km
219 g/km
Trunk score
285 L
10.1 cu ft
120 L
4.2 cu ft
Power-to-weight score
276 hp/t
206 kW/t
3.6 kg/hp
279 hp/t
208 kW/t
3.6 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 4 GTS 3.8Porsche 718 Boxster (982) GTS 4.0
Consumption9.2 L/100 km25.6 mpg US30.7 mpg UK9.6 L/100 km24.5 mpg US29.4 mpg UK
Cost / 100 km16.10 LC100 km16.80 LC100 km
Cost / 100 mi25.91 LC100 mi27.04 LC100 mi
Annual fuel used1,380 L365 US gal304 UK gal1,440 L380 US gal317 UK gal
Annual fuel cost2,415 LC/year2,520 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8

  • Has 30 hp more
  • Has 10 Nm more
  • Has 13 km/h (8 mph) higher top speed
  • Uses 0.4 L/100 km less fuel
  • Has 72 km (45 mi) more estimated range
  • Has 165 L more trunk volume
  • Emits 5 g/km less CO2

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 Boxster (982) GTS 4.0

  • Is 125 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 3 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
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (991) Carrera 4 GTS 3.8
Porsche 718 Boxster (982) GTS 4.0
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