Car comparison

Porsche 911 (991 II) Carrera 3.0vsPorsche 911 Cabriolet (991) Carrera 3.4

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

New comparison

Porsche 911 (991 II)

Carrera 3.0

370 hp2981 ccGasolineRWDManualTwin-turboCoupe2015-2018

Porsche 911 Cabriolet (991)

Carrera 3.4

350 hp3436 ccGasolineRWDDual-clutchNaturally aspiratedCabriolet / convertible2011-2015

Comparison overview

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

Porsche 911 (991 II) Carrera 3.0

Quickest 0-100 km/h
4.6 s
Fastest top speed
295 km/h
183 mph
Most powerful
370 hp
276 kW
Highest torque
450 Nm
332 lb-ft
Lightest
1,430 kg
3,153 lb
Best power-to-weight
259 hp/t
193 kW/t
3.9 kg/hp
Lowest combined fuel consumption
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
Lowest highway consumption
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
Lowest CO2 emissions
190 g/km
Best estimated range
771 km
479 mi
Best overall score
65/100
Best performance score
77/100
Best economy score
85/100

Porsche 911 Cabriolet (991) Carrera 3.4

Lowest city consumption
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Largest trunk
290 L
Best practicality score
44/100

Specification comparison

Specification comparison
Model	Porsche911 (991 II)Carrera 3.0	Porsche911 Cabriolet (991)Carrera 3.4
Power	370hp276kW	350hp261kW
Torque	450Nm332lb-ft	390Nm288lb-ft
Curb weight	1,430kg3,153lb	1,490kg3,285lb
Gross weight	1,875kg4,134lb	1,870kg4,123lb
Top speed	295 km/h 183 mph	284 km/h 176 mph
To 99% top speed	63.9s99% target: 292 km/h / 181 mph Calculated	63.2s99% target: 281 km/h / 175 mph Calculated
0-100 km/h	4.6s	4.6s
0-200 km/h	13.8s Calculated	14.5s Calculated
0-60 mph	4.4s Calculated	4.4s Calculated
Fuel consumption	8.3L/100 km28.3mpg US34.0mpg UK	8.4L/100 km28mpg US33.6mpg UK
Fuel consumption city	11.7L/100 km20.1mpg US24.1mpg UK	11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption highway	6.3L/100 km37.3mpg US44.8mpg UK	6.7L/100 km35.1mpg US42.2mpg UK
Quarter mile	12.5s Calculated	12.6s Calculated
Power-to-weight	259hp/t193kW/t117hp/1000 lb Calculated	235hp/t175kW/t107hp/1000 lb Calculated
Torque-to-weight	315Nm/t211lb-ft/ton Calculated	262Nm/t175lb-ft/ton Calculated
Estimated range	771km479mi Calculated	762km473mi Calculated
Displacement	2,981cc182cu in	3,436cc210cu in
Length	4,499mm177in	4,491mm177in
Width	1,808mm71in	1,808mm71in
Height	1,294mm51in	1,299mm51in
Wheelbase	2,450mm96in	2,450mm96in
Front track	-	1,532mm60in
Rear track	-	1,518mm60in
Trunk volume	145L	290L
Doors	2	2
Seats	4	4
Fuel tank	64L	64L
CO2 emissions	190g/km	195g/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 (991 II) Carrera 3.0Porsche 911 Cabriolet (991) Carrera 3.4PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Porsche911 (991 II)Carrera 3.0	6,500 rpm	1,700-5,000 rpm	6,750 rpm
Porsche911 Cabriolet (991)Carrera 3.4	7,400 rpm	5,600 rpm	7,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Porsche911 (991 II)Carrera 3.0	Porsche911 Cabriolet (991)Carrera 3.4
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.4 s	4.4 s
0-100 km/h 0-62 mph	4.6 s	4.6 s
0-200 km/h 0-124 mph	13.8 s	14.5 s
Top speed	295 km/h 183 mph	284 km/h 176 mph
	Drag race simulation
60 ft 18 m	2.2 s	2.2 s
330 ft 101 m	5.6 s	5.6 s
1/8 mile 201 m	8.3 s	8.3 s
1000 ft 305 m	10.6 s	10.6 s
1/4 mile 402 m	12.5 s	12.6 s
Trap speed 1/4 mile 402 m	190 km/h 118 mph	187 km/h 116 mph

Power comparison

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

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	370 hp 276 kW
Porsche911 Cabriolet (991)Carrera 3.4	350 hp 261 kW

Porsche 911 (991 II) Carrera 3.0 has 20 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 (991 II) Carrera 3.0: 20 hp (15 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	450 Nm 332 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
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	1,430 kg 3,153 lb
Porsche911 Cabriolet (991)Carrera 3.4	1,490 kg 3,285 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	295 km/h 183 mph
Porsche911 Cabriolet (991)Carrera 3.4	284 km/h 176 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	4.6 s
Porsche911 Cabriolet (991)Carrera 3.4	4.6 s

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	8.3 L/100 km 28.3 mpg US 34.0 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4	8.4 L/100 km 28.0 mpg US 33.6 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	259 hp/t 193 kW/t 3.9 kg/hp
Porsche911 Cabriolet (991)Carrera 3.4	235 hp/t 175 kW/t 4.3 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 3.0	771 km 479 mi
Porsche911 Cabriolet (991)Carrera 3.4	762 km 473 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Porsche911 (991 II)Carrera 3.0	370 hp 276 kW	4.6 s	295 km/h 183 mph
Porsche911 Cabriolet (991)Carrera 3.4	350 hp 261 kW	4.6 s	284 km/h 176 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Vehicle

Performance score

Practicality score

Porsche911 (991 II)Carrera 3.0

Power	370 hp 276 kW
0-100 km/h	4.6 s
Top speed 295 km/h 183 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

Porsche911 Cabriolet (991)Carrera 3.4

Power	350 hp 261 kW
0-100 km/h	4.6 s
Top speed 284 km/h 176 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.

Vehicle

Performance score

Fuel economy score

Porsche911 (991 II)Carrera 3.0

Power	370 hp 276 kW
0-100 km/h	4.6 s
Top speed 295 km/h 183 mph

8.3 L/100 km

28.3 mpg US

34.0 mpg UK

Porsche911 Cabriolet (991)Carrera 3.4

Power	350 hp 261 kW
0-100 km/h	4.6 s
Top speed 284 km/h 176 mph

8.4 L/100 km

28.0 mpg US

33.6 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
Porsche911 (991 II)Carrera 3.0	8.3 L/100 km 28.3 mpg US 34.0 mpg UK	4.6 s
Porsche911 Cabriolet (991)Carrera 3.4	8.4 L/100 km 28.0 mpg US 33.6 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Porsche911 (991 II)Carrera 3.0	259 hp/t 193 kW/t 3.9 kg/hp	8.3 L/100 km 28.3 mpg US 34.0 mpg UK
Porsche911 Cabriolet (991)Carrera 3.4	235 hp/t 175 kW/t 4.3 kg/hp	8.4 L/100 km 28.0 mpg US 33.6 mpg UK

Detailed score breakdown

Vehicle

Porsche911 (991 II)Carrera 3.0

Porsche911 Cabriolet (991)Carrera 3.4

Power

370 hp

276 kW

350 hp

261 kW

Torque

450 Nm

332 lb-ft

390 Nm

288 lb-ft

Acceleration

4.6 s

Top speed

295 km/h

183 mph

284 km/h

176 mph

Lightness

1,430 kg

3,153 lb

1,490 kg

3,285 lb

Fuel consumption

8.3 L/100 km

28.3 mpg US

34.0 mpg UK

8.4 L/100 km

28.0 mpg US

33.6 mpg UK

Practicality

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

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

771 km

479 mi

762 km

473 mi

CO2 score

190 g/km

195 g/km

Trunk score

145 L

5.1 cu ft

290 L

10.2 cu ft

Power-to-weight score

259 hp/t

193 kW/t

3.9 kg/hp

235 hp/t

175 kW/t

4.3 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Porsche 911 (991 II) Carrera 3.0	Porsche 911 Cabriolet (991) Carrera 3.4
Consumption	8.3 L/100 km28.3 mpg US34 mpg UK	8.4 L/100 km28 mpg US33.6 mpg UK
Cost / 100 km	14.53 LC100 km	14.70 LC100 km
Cost / 100 mi	23.38 LC100 mi	23.66 LC100 mi
Annual fuel used	1,245 L329 US gal274 UK gal	1,260 L333 US gal277 UK gal
Annual fuel cost	2,179 LC/year	2,205 LC/year