Car comparison

Porsche 911 Targa (991) 4S 3.8vsPorsche 911 Cabriolet (991) Carrera 3.4

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

New comparison

Porsche 911 Targa (991)

4S 3.8

400 hp3800 ccGasolineAWDManualNaturally aspirated2014-2015
VS

Porsche 911 Cabriolet (991)

Carrera 3.4

350 hp3436 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2011-2015

Comparison overview

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

Best choices

Porsche 911 Targa (991) 4S 3.8

  • Quickest 0-100 km/h
    4.8 s
  • Fastest top speed
    296 km/h
    184 mph
  • Most powerful
    400 hp
    298 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Best power-to-weight
    257 hp/t
    192 kW/t
    3.9 kg/hp
  • Best overall score
    69/100
  • Best performance score
    77/100
  • Best practicality score
    51/100

Porsche 911 Cabriolet (991) Carrera 3.4

  • Lightest
    1,470 kg
    3,241 lb
  • Lowest combined fuel consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest city consumption
    12.7 L/100 km
    18.5 mpg US
    22.2 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    216 g/km
  • Best estimated range
    696 km
    432 mi
  • Largest trunk
    290 L
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelPorsche911 Targa (991)4S 3.8Porsche911 Cabriolet (991)Carrera 3.4
Power
400hp298kW
350hp261kW
Torque
440Nm325lb-ft
390Nm288lb-ft
Curb weight
1,555kg3,428lb
1,470kg3,241lb
Gross weight
1,960kg4,321lb
1,850kg4,079lb
Top speed
296 km/h
184 mph
286 km/h
178 mph
To 99% top speed
64.9s99% target: 293 km/h / 182 mph
Calculated
68.9s99% target: 283 km/h / 176 mph
Calculated
0-100 km/h
4.8s
5.0s
0-200 km/h
14.2s
Calculated
15.6s
Calculated
0-60 mph
4.6s
Calculated
4.8s
Calculated
Fuel consumption
10L/100 km23.5mpg US28.2mpg UK
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption city
13.9L/100 km16.9mpg US20.3mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption highway
7.7L/100 km30.5mpg US36.7mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
12.7s
Calculated
13.0s
Calculated
Power-to-weight
257hp/t192kW/t117hp/1000 lb
Calculated
238hp/t178kW/t108hp/1000 lb
Calculated
Torque-to-weight
283Nm/t189lb-ft/ton
Calculated
265Nm/t178lb-ft/ton
Calculated
Estimated range
680km423mi
Calculated
696km432mi
Calculated
Displacement
3,800cc232cu in
3,436cc210cu in
Length
4,491mm177in
4,491mm177in
Width
1,852mm73in
1,808mm71in
Height
1,291mm51in
1,299mm51in
Wheelbase
2,450mm96in
2,450mm96in
Front track
1,538mm61in
1,532mm60in
Rear track
1,552mm61in
1,518mm60in
Trunk volume
285L
290L
Doors
2
2
Seats
4
4
Fuel tank
68L
64L
CO2 emissions
237g/km
216g/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 Targa (991) 4S 3.8Porsche 911 Cabriolet (991) Carrera 3.4PowerTorque
  • Porsche 911 Targa (991) 4S 3.8: Power / Torque
  • Porsche 911 Cabriolet (991) Carrera 3.4: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Targa (991)4S 3.87,400 rpm5,600 rpm7,650 rpm
Porsche911 Cabriolet (991)Carrera 3.47,400 rpm5,600 rpm7,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Targa (991)4S 3.8Porsche911 Cabriolet (991)Carrera 3.4
Acceleration checkpoints
0-60 mph
0-97 km/h
4.6 s
4.8 s
0-100 km/h
0-62 mph
4.8 s
5.0 s
0-200 km/h
0-124 mph
14.2 s
15.6 s
Top speed
296 km/h
184 mph
286 km/h
178 mph
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.7 s
5.8 s
1/8 mile
201 m
8.4 s
8.6 s
1000 ft
305 m
10.8 s
11.0 s
1/4 mile
402 m
12.7 s
13.0 s
Trap speed
1/4 mile
402 m
189 km/h
117 mph
183 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Targa (991)4S 3.8
400 hp
298 kW
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW

Porsche 911 Targa (991) 4S 3.8 has 50 hp more than Porsche 911 Cabriolet (991) Carrera 3.4.

The biggest power difference is between Porsche 911 Cabriolet (991) Carrera 3.4 and Porsche 911 Targa (991) 4S 3.8: 50 hp (37 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 Targa (991)4S 3.8
440 Nm
325 lb-ft
Porsche911 Cabriolet (991)Carrera 3.4
390 Nm
288 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 Targa (991)4S 3.8
1,555 kg
3,428 lb
Porsche911 Cabriolet (991)Carrera 3.4
1,470 kg
3,241 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 Targa (991)4S 3.8
296 km/h
184 mph
Porsche911 Cabriolet (991)Carrera 3.4
286 km/h
178 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche911 Targa (991)4S 3.84.8 s
Porsche911 Cabriolet (991)Carrera 3.45.0 s

The biggest 0-100 km/h difference is between Porsche 911 Targa (991) 4S 3.8 and Porsche 911 Cabriolet (991) Carrera 3.4: 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 Targa (991)4S 3.8
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Carrera 3.4 and Porsche 911 Targa (991) 4S 3.8: 0.8 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 Targa (991)4S 3.8
257 hp/t
192 kW/t
3.9 kg/hp
Porsche911 Cabriolet (991)Carrera 3.4
238 hp/t
178 kW/t
4.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 Targa (991)4S 3.8
680 km
423 mi
Porsche911 Cabriolet (991)Carrera 3.4
696 km
432 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Targa (991)4S 3.8
400 hp
298 kW
4.8 s
296 km/h
184 mph
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW
5.0 s
286 km/h
178 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 Targa (991)4S 3.8
Power
400 hp
298 kW
0-100 km/h4.8 s
Top speed
296 km/h
184 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,491 mm
176.8 in
Height
1,291 mm
50.8 in
Porsche911 Cabriolet (991)Carrera 3.4
Power
350 hp
261 kW
0-100 km/h5.0 s
Top speed
286 km/h
178 mph
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,491 mm
176.8 in
Height
1,299 mm
51.1 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 Targa (991)4S 3.8
Power
400 hp
298 kW
0-100 km/h4.8 s
Top speed
296 km/h
184 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
Power
350 hp
261 kW
0-100 km/h5.0 s
Top speed
286 km/h
178 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Porsche 911 Targa (991) 4S 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 Targa (991)4S 3.8
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
4.8 s
Porsche911 Cabriolet (991)Carrera 3.4
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
5.0 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 Targa (991)4S 3.8
257 hp/t
192 kW/t
3.9 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4
238 hp/t
178 kW/t
4.2 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Targa (991)4S 3.8Porsche911 Cabriolet (991)Carrera 3.4
Power
400 hp
298 kW
350 hp
261 kW
Torque
440 Nm
325 lb-ft
390 Nm
288 lb-ft
Acceleration
4.8 s
5.0 s
Top speed
296 km/h
184 mph
286 km/h
178 mph
Lightness
1,555 kg
3,428 lb
1,470 kg
3,241 lb
Fuel consumption
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,491 mm
176.8 in
Height
1,291 mm
50.8 in
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,491 mm
176.8 in
Height
1,299 mm
51.1 in
Range score
680 km
423 mi
696 km
432 mi
CO2 score
237 g/km
216 g/km
Trunk score
285 L
10.1 cu ft
290 L
10.2 cu ft
Power-to-weight score
257 hp/t
192 kW/t
3.9 kg/hp
238 hp/t
178 kW/t
4.2 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 Targa (991) 4S 3.8Porsche 911 Cabriolet (991) Carrera 3.4
Consumption10 L/100 km23.5 mpg US28.2 mpg UK9.2 L/100 km25.6 mpg US30.7 mpg UK
Cost / 100 km17.50 LC100 km16.10 LC100 km
Cost / 100 mi28.16 LC100 mi25.91 LC100 mi
Annual fuel used1,500 L396 US gal330 UK gal1,380 L365 US gal304 UK gal
Annual fuel cost2,625 LC/year2,415 LC/year

Head-to-head comparisons

Porsche 911 Targa (991) 4S 3.8

  • Has 50 hp more
  • Has 50 Nm more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Has 19 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Porsche 911 Cabriolet (991) Carrera 3.4

  • Is 85 kg lighter
  • Uses 0.8 L/100 km less fuel
  • Has 16 km (10 mi) more estimated range
  • Has 5 L more trunk volume
  • Emits 21 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Targa (991) 4S 3.8
Porsche 911 Cabriolet (991) Carrera 3.4
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Porsche 911 Targa (991) 4S 3.8 vs Porsche 911 Cabriolet (991) Carrera 3.4 - car comparison - FastVsFaster