Car comparison

Porsche 911 Cabriolet (991) Carrera 4 3.4vsPorsche 718 Boxster (982) S 2.5

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

New comparison

Porsche 911 Cabriolet (991)

Carrera 4 3.4

350 hp3436 ccGasolineAWDDual-clutchNaturally aspiratedCabriolet / convertible2012-2015
VS

Porsche 718 Boxster (982)

S 2.5

350 hp2497 ccGasolineRWDManualTurbochargedCabriolet / 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 3.4

  • Fastest top speed
    290 km/h
    180 mph Unrestricted
    280 km/h
    174 mph Restricted
  • Most powerful
    350 hp
    261 kW
  • Lowest combined fuel consumption
    8.7 L/100 km
    27.0 mpg US
    32.5 mpg UK
  • Lowest city consumption
    11.8 L/100 km
    19.9 mpg US
    23.9 mpg UK
  • Lowest highway consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest CO2 emissions
    202 g/km
  • Best estimated range
    782 km
    486 mi
  • Largest trunk
    285 L
  • Best overall score
    64/100
  • Best economy score
    83/100
  • Best practicality score
    44/100

Porsche 718 Boxster (982) S 2.5

  • Quickest 0-100 km/h
    4.6 s
  • Highest torque
    420 Nm
    310 lb-ft
  • Lightest
    1,355 kg
    2,987 lb
  • Best power-to-weight
    258 hp/t
    193 kW/t
    3.9 kg/hp
  • Best performance score
    74/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Carrera 4 3.4Porsche718 Boxster (982)S 2.5
Power
350hp261kW
350hp261kW
Torque
390Nm288lb-ft
420Nm310lb-ft
Curb weight
1,540kg3,395lb
1,355kg2,987lb
Gross weight
1,920kg4,233lb
1,665kg3,671lb
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Calculated
285 km/h
177 mph
To 99% top speed
69.2s99% target: 287 km/h / 178 mph
Calculated
71.7s99% target: 282 km/h / 175 mph
Calculated
0-100 km/h
4.7s
4.6s
0-200 km/h
14.8s
Calculated
15.2s
0-60 mph
4.5s
Calculated
4.4s
Calculated
Fuel consumption
8.7L/100 km27mpg US32.5mpg UK
9.6L/100 km24.5mpg US29.4mpg UK
Fuel consumption city
11.8L/100 km19.9mpg US23.9mpg UK
12.9L/100 km18.2mpg US21.9mpg UK
Fuel consumption highway
6.9L/100 km34.1mpg US40.9mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile
12.7s
Calculated
12.7s
Calculated
Power-to-weight
227hp/t169kW/t103hp/1000 lb
Calculated
258hp/t193kW/t117hp/1000 lb
Calculated
Torque-to-weight
253Nm/t169lb-ft/ton
Calculated
310Nm/t207lb-ft/ton
Calculated
Estimated range
782km486mi
Calculated
667km414mi
Calculated
Displacement
3,436cc210cu in
2,497cc152cu in
Length
4,491mm177in
4,379mm172in
Width
1,852mm73in
1,801mm71in
Height
1,300mm51in
1,280mm50in
Wheelbase
2,450mm96in
2,475mm97in
Front track
1,532mm60in
1,515mm60in
Rear track
1,560mm61in
1,540mm61in
Trunk volume
285L
125L
Doors
2
2
Seats
4
2
Fuel tank
68L
64L
CO2 emissions
202g/km
218g/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 3.4Porsche 718 Boxster (982) S 2.5PowerTorque
  • Porsche 911 Cabriolet (991) Carrera 4 3.4: Power / Torque
  • Porsche 718 Boxster (982) S 2.5: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Carrera 4 3.47,400 rpm5,600 rpm7,650 rpm
Porsche718 Boxster (982)S 2.56,500 rpm2,100-4,500 rpm7,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Carrera 4 3.4Porsche718 Boxster (982)S 2.5
Acceleration checkpoints
0-60 mph
0-97 km/h
4.5 s
4.4 s
0-100 km/h
0-62 mph
4.7 s
4.6 s
0-200 km/h
0-124 mph
14.8 s
15.2 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Likely limited
285 km/h
177 mph
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.6 s
5.5 s
1/8 mile
201 m
8.4 s
8.3 s
1000 ft
305 m
10.7 s
10.7 s
1/4 mile
402 m
12.7 s
12.7 s
Trap speed
1/4 mile
402 m
186 km/h
115 mph
184 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4 3.4
350 hp
261 kW
Porsche718 Boxster (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 Cabriolet (991)Carrera 4 3.4
390 Nm
288 lb-ft
Porsche718 Boxster (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 Cabriolet (991)Carrera 4 3.4
1,540 kg
3,395 lb
Porsche718 Boxster (982)S 2.5
1,355 kg
2,987 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 3.4
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Porsche718 Boxster (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 Cabriolet (991)Carrera 4 3.44.7 s
Porsche718 Boxster (982)S 2.54.6 s

The biggest 0-100 km/h difference is between Porsche 718 Boxster (982) S 2.5 and Porsche 911 Cabriolet (991) Carrera 4 3.4: 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 Cabriolet (991)Carrera 4 3.4
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Porsche718 Boxster (982)S 2.5
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Carrera 4 3.4 and Porsche 718 Boxster (982) S 2.5: 0.9 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 4 3.4
227 hp/t
169 kW/t
4.4 kg/hp
Porsche718 Boxster (982)S 2.5
258 hp/t
193 kW/t
3.9 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 3.4
782 km
486 mi
Porsche718 Boxster (982)S 2.5
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 3.4
350 hp
261 kW
4.7 s
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Porsche718 Boxster (982)S 2.5
350 hp
261 kW
4.6 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 Cabriolet (991)Carrera 4 3.4
Power
350 hp
261 kW
0-100 km/h4.7 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,491 mm
176.8 in
Height
1,300 mm
51.2 in
Porsche718 Boxster (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.6 s
Top speed
285 km/h
177 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 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 3.4
Power
350 hp
261 kW
0-100 km/h4.7 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Porsche718 Boxster (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.6 s
Top speed
285 km/h
177 mph
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Porsche 911 Cabriolet (991) Carrera 4 3.4 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 3.4
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.7 s
Porsche718 Boxster (982)S 2.5
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
4.6 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 3.4
227 hp/t
169 kW/t
4.4 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Porsche718 Boxster (982)S 2.5
258 hp/t
193 kW/t
3.9 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 3.4Porsche718 Boxster (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
4.7 s
4.6 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
285 km/h
177 mph
Lightness
1,540 kg
3,395 lb
1,355 kg
2,987 lb
Fuel consumption
8.7 L/100 km
27.0 mpg US
32.5 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
4,491 mm
176.8 in
Height
1,300 mm
51.2 in
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 in
Range score
782 km
486 mi
667 km
414 mi
CO2 score
202 g/km
218 g/km
Trunk score
285 L
10.1 cu ft
125 L
4.4 cu ft
Power-to-weight score
227 hp/t
169 kW/t
4.4 kg/hp
258 hp/t
193 kW/t
3.9 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 3.4Porsche 718 Boxster (982) S 2.5
Consumption8.7 L/100 km27 mpg US32.5 mpg UK9.6 L/100 km24.5 mpg US29.4 mpg UK
Cost / 100 km15.22 LC100 km16.80 LC100 km
Cost / 100 mi24.50 LC100 mi27.04 LC100 mi
Annual fuel used1,305 L345 US gal287 UK gal1,440 L380 US gal317 UK gal
Annual fuel cost2,284 LC/year2,520 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Carrera 4 3.4

  • Has 5 km/h (3 mph) higher top speed
  • Uses 0.9 L/100 km less fuel
  • Has 115 km (71 mi) more estimated range
  • Has 160 L more trunk volume
  • Emits 16 g/km less CO2

Pros

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

Cons

  • Slowest 0-100 km/h
  • Heaviest

Porsche 718 Boxster (982) S 2.5

  • Has 30 Nm more
  • Is 185 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Has 31 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • 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 Cabriolet (991) Carrera 4 3.4
Porsche 718 Boxster (982) S 2.5
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