Car comparison

Porsche 911 Cabriolet (991) Carrera 4S 3.8vsPorsche 911 (991 II) Carrera 3.0

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

New comparison

Porsche 911 Cabriolet (991)

Carrera 4S 3.8

400 hp3800 ccGasolineAWDDual-clutchNaturally aspiratedCabriolet / convertible2012-2015
VS

Porsche 911 (991 II)

Carrera 3.0

370 hp2981 ccGasolineRWDDual-clutchTwin-turboCoupe2015-2018

Comparison overview

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

Best choices

Porsche 911 Cabriolet (991) Carrera 4S 3.8

  • Quickest 0-100 km/h
    4.3 s
  • Fastest top speed
    294 km/h
    183 mph
  • Most powerful
    400 hp
    298 kW
  • Best power-to-weight
    257 hp/t
    192 kW/t
    3.9 kg/hp
  • Largest trunk
    285 L
  • Best overall score
    67/100
  • Best performance score
    78/100
  • Best practicality score
    44/100

Porsche 911 (991 II) Carrera 3.0

  • Highest torque
    450 Nm
    332 lb-ft
  • Lightest
    1,450 kg
    3,197 lb
  • Lowest combined fuel consumption
    7.4 L/100 km
    31.8 mpg US
    38.2 mpg UK
  • Lowest city consumption
    9.9 L/100 km
    23.8 mpg US
    28.5 mpg UK
  • Lowest highway consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Lowest CO2 emissions
    169 g/km
  • Best estimated range
    865 km
    537 mi
  • Best economy score
    87/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Carrera 4S 3.8Porsche911 (991 II)Carrera 3.0
Power
400hp298kW
370hp276kW
Torque
440Nm325lb-ft
450Nm332lb-ft
Curb weight
1,555kg3,428lb
1,450kg3,197lb
Gross weight
1,955kg4,310lb
1,890kg4,167lb
Top speed
294 km/h
183 mph
293 km/h
182 mph
To 99% top speed
61.4s99% target: 291 km/h / 181 mph
Calculated
61.0s99% target: 290 km/h / 180 mph
Calculated
0-100 km/h
4.3s
4.4s
0-200 km/h
13.1s
Calculated
13.3s
Calculated
0-60 mph
4.1s
Calculated
4.2s
Calculated
Fuel consumption
9.2L/100 km25.6mpg US30.7mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
Fuel consumption city
12.5L/100 km18.8mpg US22.6mpg UK
9.9L/100 km23.8mpg US28.5mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
6L/100 km39.2mpg US47.1mpg UK
Quarter mile
12.2s
Calculated
12.3s
Calculated
Power-to-weight
257hp/t192kW/t117hp/1000 lb
Calculated
255hp/t190kW/t116hp/1000 lb
Calculated
Torque-to-weight
283Nm/t189lb-ft/ton
Calculated
310Nm/t208lb-ft/ton
Calculated
Estimated range
739km459mi
Calculated
865km537mi
Calculated
Displacement
3,800cc232cu in
2,981cc182cu in
Length
4,491mm177in
4,499mm177in
Width
1,852mm73in
1,808mm71in
Height
1,293mm51in
1,294mm51in
Wheelbase
2,450mm96in
2,450mm96in
Front track
1,538mm61in
-
Rear track
1,552mm61in
-
Trunk volume
285L
145L
Doors
2
2
Seats
4
4
Fuel tank
68L
64L
CO2 emissions
214g/km
169g/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 4S 3.8Porsche 911 (991 II) Carrera 3.0PowerTorque
  • Porsche 911 Cabriolet (991) Carrera 4S 3.8: Power / Torque
  • Porsche 911 (991 II) Carrera 3.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Carrera 4S 3.87,400 rpm5,600 rpm7,650 rpm
Porsche911 (991 II)Carrera 3.06,500 rpm1,700-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Carrera 4S 3.8Porsche911 (991 II)Carrera 3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
4.1 s
4.2 s
0-100 km/h
0-62 mph
4.3 s
4.4 s
0-200 km/h
0-124 mph
13.1 s
13.3 s
Top speed
294 km/h
183 mph
293 km/h
182 mph
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.4 s
5.5 s
1/8 mile
201 m
8.1 s
8.1 s
1000 ft
305 m
10.3 s
10.4 s
1/4 mile
402 m
12.2 s
12.3 s
Trap speed
1/4 mile
402 m
193 km/h
120 mph
192 km/h
120 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4S 3.8
400 hp
298 kW
Porsche911 (991 II)Carrera 3.0
370 hp
276 kW

Porsche 911 Cabriolet (991) Carrera 4S 3.8 has 30 hp more than Porsche 911 (991 II) Carrera 3.0.

The biggest power difference is between Porsche 911 (991 II) Carrera 3.0 and Porsche 911 Cabriolet (991) Carrera 4S 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 4S 3.8
440 Nm
325 lb-ft
Porsche911 (991 II)Carrera 3.0
450 Nm
332 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 4S 3.8
1,555 kg
3,428 lb
Porsche911 (991 II)Carrera 3.0
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 Cabriolet (991)Carrera 4S 3.8
294 km/h
183 mph
Porsche911 (991 II)Carrera 3.0
293 km/h
182 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 4S 3.84.3 s
Porsche911 (991 II)Carrera 3.04.4 s

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (991) Carrera 4S 3.8 and Porsche 911 (991 II) Carrera 3.0: 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 4S 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche911 (991 II)Carrera 3.0
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991 II) Carrera 3.0 and Porsche 911 Cabriolet (991) Carrera 4S 3.8: 1.8 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 4S 3.8
257 hp/t
192 kW/t
3.9 kg/hp
Porsche911 (991 II)Carrera 3.0
255 hp/t
190 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 4S 3.8
739 km
459 mi
Porsche911 (991 II)Carrera 3.0
865 km
537 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (991)Carrera 4S 3.8
400 hp
298 kW
4.3 s
294 km/h
183 mph
Porsche911 (991 II)Carrera 3.0
370 hp
276 kW
4.4 s
293 km/h
182 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 4S 3.8
Power
400 hp
298 kW
0-100 km/h4.3 s
Top speed
294 km/h
183 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,491 mm
176.8 in
Height
1,293 mm
50.9 in
Porsche911 (991 II)Carrera 3.0
Power
370 hp
276 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,294 mm
50.9 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 4S 3.8
Power
400 hp
298 kW
0-100 km/h4.3 s
Top speed
294 km/h
183 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche911 (991 II)Carrera 3.0
Power
370 hp
276 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

Porsche 911 (991 II) Carrera 3.0 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 4S 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
4.3 s
Porsche911 (991 II)Carrera 3.0
7.4 L/100 km
31.8 mpg US
38.2 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 Cabriolet (991)Carrera 4S 3.8
257 hp/t
192 kW/t
3.9 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Porsche911 (991 II)Carrera 3.0
255 hp/t
190 kW/t
3.9 kg/hp
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (991)Carrera 4S 3.8Porsche911 (991 II)Carrera 3.0
Power
400 hp
298 kW
370 hp
276 kW
Torque
440 Nm
325 lb-ft
450 Nm
332 lb-ft
Acceleration
4.3 s
4.4 s
Top speed
294 km/h
183 mph
293 km/h
182 mph
Lightness
1,555 kg
3,428 lb
1,450 kg
3,197 lb
Fuel consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,491 mm
176.8 in
Height
1,293 mm
50.9 in
Doors/seats
2 doors
4 seats
Trunk
145 L
5.1 cu ft
Length
4,499 mm
177.1 in
Height
1,294 mm
50.9 in
Range score
739 km
459 mi
865 km
537 mi
CO2 score
214 g/km
169 g/km
Trunk score
285 L
10.1 cu ft
145 L
5.1 cu ft
Power-to-weight score
257 hp/t
192 kW/t
3.9 kg/hp
255 hp/t
190 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 4S 3.8Porsche 911 (991 II) Carrera 3.0
Consumption9.2 L/100 km25.6 mpg US30.7 mpg UK7.4 L/100 km31.8 mpg US38.2 mpg UK
Cost / 100 km16.10 LC100 km12.95 LC100 km
Cost / 100 mi25.91 LC100 mi20.84 LC100 mi
Annual fuel used1,380 L365 US gal304 UK gal1,110 L293 US gal244 UK gal
Annual fuel cost2,415 LC/year1,943 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Carrera 4S 3.8

  • Has 30 hp more
  • Is 0.1 s quicker from 0-100 km/h
  • Has 1 km/h (1 mph) higher top speed
  • Has 2 hp/t better power-to-weight
  • Has 140 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Porsche 911 (991 II) Carrera 3.0

  • Has 10 Nm more
  • Is 105 kg lighter
  • Uses 1.8 L/100 km less fuel
  • Has 126 km (78 mi) more estimated range
  • Emits 45 g/km less CO2

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (991) Carrera 4S 3.8
Porsche 911 (991 II) Carrera 3.0
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