Car comparison

Porsche 911 Cabriolet (991) Carrera 3.4vsPorsche 911 Speedster 3.6

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

New comparison

Porsche 911 Cabriolet (991)

Carrera 3.4

350 hp3436 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2011-2015
VS

Porsche 911 Speedster

3.6

250 hp3600 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible1989-1989

Comparison overview

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

Best choices

Porsche 911 Cabriolet (991) Carrera 3.4

  • Quickest 0-100 km/h
    5.0 s
  • Fastest top speed
    286 km/h
    178 mph
  • Most powerful
    350 hp
    261 kW
  • Highest torque
    390 Nm
    288 lb-ft
  • Best power-to-weight
    238 hp/t
    178 kW/t
    4.2 kg/hp
  • 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
  • Best overall score
    63/100
  • Best performance score
    72/100
  • Best economy score
    82/100
  • Best practicality score
    44/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Carrera 3.4Porsche911 Speedster3.6
Power
350hp261kW
250hp186kW
Torque
390Nm288lb-ft
310Nm229lb-ft
Curb weight
1,470kg3,241lb
1,350kg2,976lb
Gross weight
1,850kg4,079lb
1,600kg3,527lb
Top speed
286 km/h
178 mph
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 mph
Calculated
To 99% top speed
68.9s99% target: 283 km/h / 176 mph
Calculated
75.8s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
5.0s
5.7s
0-200 km/h
15.6s
Calculated
19.0s
Calculated
0-60 mph
4.8s
Calculated
5.4s
Calculated
Fuel consumption
9.2L/100 km25.6mpg US30.7mpg UK
-
Fuel consumption city
12.7L/100 km18.5mpg US22.2mpg UK
17.1L/100 km13.8mpg US16.5mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Quarter mile
13.0s
Calculated
13.7s
Calculated
Power-to-weight
238hp/t178kW/t108hp/1000 lb
Calculated
185hp/t138kW/t84hp/1000 lb
Calculated
Torque-to-weight
265Nm/t178lb-ft/ton
Calculated
230Nm/t154lb-ft/ton
Calculated
Estimated range
696km432mi
Calculated
-
Displacement
3,436cc210cu in
3,600cc220cu in
Length
4,491mm177in
4,250mm167in
Width
1,808mm71in
1,652mm65in
Height
1,299mm51in
1,280mm50in
Wheelbase
2,450mm96in
2,272mm89in
Front track
1,532mm60in
1,374mm54in
Rear track
1,518mm60in
1,374mm54in
Ground clearance-
115mm5in
Trunk volume
290L
-
Doors
2
2
Seats
4
2
Fuel tank
64L
77L
CO2 emissions
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 Cabriolet (991) Carrera 3.4Porsche 911 Speedster 3.6PowerTorque
  • Porsche 911 Cabriolet (991) Carrera 3.4: Power / Torque
  • Porsche 911 Speedster 3.6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Carrera 3.47,400 rpm5,600 rpm7,650 rpm
Porsche911 Speedster3.66,100 rpm4,800 rpm6,350 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Carrera 3.4Porsche911 Speedster3.6
Acceleration checkpoints
0-60 mph
0-97 km/h
4.8 s
5.4 s
0-100 km/h
0-62 mph
5.0 s
5.7 s
0-200 km/h
0-124 mph
15.6 s
19.0 s
Top speed
286 km/h
178 mph
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.8 s
6.1 s
1/8 mile
201 m
8.6 s
9.1 s
1000 ft
305 m
11.0 s
11.6 s
1/4 mile
402 m
13.0 s
13.7 s
Trap speed
1/4 mile
402 m
183 km/h
114 mph
172 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW
Porsche911 Speedster3.6
250 hp
186 kW

Porsche 911 Cabriolet (991) Carrera 3.4 has 100 hp more than Porsche 911 Speedster 3.6.

The biggest power difference is between Porsche 911 Speedster 3.6 and Porsche 911 Cabriolet (991) Carrera 3.4: 100 hp (75 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 3.4
390 Nm
288 lb-ft
Porsche911 Speedster3.6
310 Nm
229 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Carrera 3.4
1,470 kg
3,241 lb
Porsche911 Speedster3.6
1,350 kg
2,976 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 3.4
286 km/h
178 mph
Porsche911 Speedster3.6
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 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 3.45.0 s
Porsche911 Speedster3.65.7 s

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (991) Carrera 3.4 and Porsche 911 Speedster 3.6: 0.7 s.

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 3.4
238 hp/t
178 kW/t
4.2 kg/hp
Porsche911 Speedster3.6
185 hp/t
138 kW/t
5.4 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (991)Carrera 3.4
350 hp
261 kW
5.0 s
286 km/h
178 mph
Porsche911 Speedster3.6
250 hp
186 kW
5.7 s
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 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 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
Porsche911 Speedster3.6
Power
250 hp
186 kW
0-100 km/h5.7 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,250 mm
167.3 in
Height
1,280 mm
50.4 in

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (991)Carrera 3.4Porsche911 Speedster3.6
Power
350 hp
261 kW
250 hp
186 kW
Torque
390 Nm
288 lb-ft
310 Nm
229 lb-ft
Acceleration
5.0 s
5.7 s
Top speed
286 km/h
178 mph
Unrestricted
270 km/h168 mph
Restricted
260 km/h162 mph
Lightness
1,470 kg
3,241 lb
1,350 kg
2,976 lb
Fuel consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
-
Practicality
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
Doors/seats
2 doors
2 seats
Trunk-
Length
4,250 mm
167.3 in
Height
1,280 mm
50.4 in
Range score
696 km
432 mi
-
CO2 score
216 g/km
-
Trunk score
290 L
10.2 cu ft
-
Power-to-weight score
238 hp/t
178 kW/t
4.2 kg/hp
185 hp/t
138 kW/t
5.4 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 3.4
Consumption9.2 L/100 km25.6 mpg US30.7 mpg UK
Cost / 100 km16.10 LC100 km
Cost / 100 mi25.91 LC100 mi
Annual fuel used1,380 L365 US gal304 UK gal
Annual fuel cost2,415 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Carrera 3.4

  • Has 100 hp more
  • Has 80 Nm more
  • Is 0.7 s quicker from 0-100 km/h
  • Has 16 km/h (10 mph) higher top speed
  • Has 53 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

  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (991) Carrera 3.4
Porsche 911 Speedster 3.6
Compare selected cars
2 vehicles selected

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Porsche 911 Cabriolet (991) Carrera 3.4 vs Porsche 911 Speedster 3.6 - car comparison - FastVsFaster