Car comparison

Porsche 911 (991 II) Carrera 4 GTS 3.0vsPorsche 911 (991) Carrera GTS 3.8

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

New comparison

Porsche 911 (991 II)

Carrera 4 GTS 3.0

450 hp2981 ccGasolineAWDDual-clutchTwin-turboCoupe2017-2018

Porsche 911 (991)

Carrera GTS 3.8

430 hp3800 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2014-2015

Comparison overview

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

Porsche 911 (991 II) Carrera 4 GTS 3.0

Quickest 0-100 km/h
3.6 s
Fastest top speed
315 km/h
196 mph Unrestricted
308 km/h
191 mph Restricted
Most powerful
450 hp
336 kW
Highest torque
550 Nm
406 lb-ft
Lowest combined fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
Lowest city consumption
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Lowest CO2 emissions
192 g/km
Best estimated range
788 km
490 mi
Largest trunk
385 L
Best overall score
75/100
Best performance score
87/100
Best economy score
84/100
Best practicality score
51/100

Porsche 911 (991) Carrera GTS 3.8

Lightest
1,445 kg
3,186 lb
Best power-to-weight
298 hp/t
222 kW/t
3.4 kg/hp
Lowest highway consumption
6.7 L/100 km
35.1 mpg US
42.2 mpg UK

Specification comparison

Specification comparison
Model	Porsche911 (991 II)Carrera 4 GTS 3.0	Porsche911 (991)Carrera GTS 3.8
Power	450hp336kW	430hp321kW
Torque	550Nm406lb-ft	440Nm325lb-ft
Curb weight	1,515kg3,340lb	1,445kg3,186lb
Gross weight	1,965kg4,332lb	1,870kg4,123lb
Top speed	Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph Calculated	304 km/h 189 mph
To 99% top speed	93.3s99% target: 312 km/h / 194 mph Calculated	56.2s99% target: 301 km/h / 187 mph Calculated
0-100 km/h	3.6s	4.0s
0-200 km/h	12.8s	11.6s Calculated
0-60 mph	3.4s Calculated	3.8s Calculated
Fuel consumption	8.5L/100 km27.7mpg US33.2mpg UK	8.7L/100 km27mpg US32.5mpg UK
Fuel consumption city	10.9L/100 km21.6mpg US25.9mpg UK	12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption highway	7.1L/100 km33.1mpg US39.8mpg UK	6.7L/100 km35.1mpg US42.2mpg UK
Quarter mile	11.7s Calculated	11.8s Calculated
Power-to-weight	297hp/t221kW/t135hp/1000 lb Calculated	298hp/t222kW/t135hp/1000 lb Calculated
Torque-to-weight	363Nm/t243lb-ft/ton Calculated	304Nm/t204lb-ft/ton Calculated
Estimated range	788km490mi Calculated	736km457mi Calculated
Displacement	2,981cc182cu in	3,800cc232cu in
Length	4,528mm178in	4,509mm178in
Width	1,852mm73in	1,852mm73in
Height	1,284mm51in	1,295mm51in
Wheelbase	2,450mm96in	2,450mm96in
Front track	1,541mm61in	1,538mm61in
Rear track	1,544mm61in	1,560mm61in
Trunk volume	-	385L
Max trunk volume	385L	-
Doors	2	2
Seats	4	4
Fuel tank	67L	64L
CO2 emissions	192g/km	202g/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 4 GTS 3.0Porsche 911 (991) Carrera GTS 3.8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Porsche911 (991 II)Carrera 4 GTS 3.0	6,500 rpm	2,150-5,000 rpm	7,500 rpm
Porsche911 (991)Carrera GTS 3.8	7,500 rpm	5,750 rpm	7,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Porsche911 (991 II)Carrera 4 GTS 3.0	Porsche911 (991)Carrera GTS 3.8
	Acceleration checkpoints
0-60 mph 0-97 km/h	3.4 s	3.8 s
0-100 km/h 0-62 mph	3.6 s	4.0 s
0-200 km/h 0-124 mph	12.8 s	11.6 s
Top speed	Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph Likely limited	304 km/h 189 mph
	Drag race simulation
60 ft 18 m	1.8 s	2.1 s
330 ft 101 m	4.9 s	5.3 s
1/8 mile 201 m	7.5 s	7.8 s
1000 ft 305 m	9.8 s	10.0 s
1/4 mile 402 m	11.7 s	11.8 s
Trap speed 1/4 mile 402 m	192 km/h 119 mph	201 km/h 125 mph

Power comparison

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

Chart data table
Vehicle	Value
Porsche911 (991 II)Carrera 4 GTS 3.0	450 hp 336 kW
Porsche911 (991)Carrera GTS 3.8	430 hp 321 kW

Porsche 911 (991 II) Carrera 4 GTS 3.0 has 20 hp more than Porsche 911 (991) Carrera GTS 3.8.

The biggest power difference is between Porsche 911 (991) Carrera GTS 3.8 and Porsche 911 (991 II) Carrera 4 GTS 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 4 GTS 3.0	550 Nm 406 lb-ft
Porsche911 (991)Carrera GTS 3.8	440 Nm 325 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 4 GTS 3.0	1,515 kg 3,340 lb
Porsche911 (991)Carrera GTS 3.8	1,445 kg 3,186 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 4 GTS 3.0	Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph
Porsche911 (991)Carrera GTS 3.8	304 km/h 189 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 4 GTS 3.0	3.6 s
Porsche911 (991)Carrera GTS 3.8	4.0 s

The biggest 0-100 km/h difference is between Porsche 911 (991 II) Carrera 4 GTS 3.0 and Porsche 911 (991) Carrera GTS 3.8: 0.4 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 4 GTS 3.0	8.5 L/100 km 27.7 mpg US 33.2 mpg UK
Porsche911 (991)Carrera GTS 3.8	8.7 L/100 km 27.0 mpg US 32.5 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 4 GTS 3.0	297 hp/t 221 kW/t 3.4 kg/hp
Porsche911 (991)Carrera GTS 3.8	298 hp/t 222 kW/t 3.4 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 4 GTS 3.0	788 km 490 mi
Porsche911 (991)Carrera GTS 3.8	736 km 457 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 4 GTS 3.0	450 hp 336 kW	3.6 s	Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph
Porsche911 (991)Carrera GTS 3.8	430 hp 321 kW	4.0 s	304 km/h 189 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 4 GTS 3.0

Power	450 hp 336 kW
0-100 km/h	3.6 s
Top speed Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph

Doors/seats	2 doors 4 seats
Trunk	385 L 13.6 cu ft
Length	4,528 mm 178.3 in
Height	1,284 mm 50.6 in

Porsche911 (991)Carrera GTS 3.8

Power	430 hp 321 kW
0-100 km/h	4.0 s
Top speed 304 km/h 189 mph

Doors/seats	2 doors 4 seats
Trunk	385 L 13.6 cu ft
Length	4,509 mm 177.5 in
Height	1,295 mm 51.0 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 4 GTS 3.0

Power	450 hp 336 kW
0-100 km/h	3.6 s
Top speed Unrestricted 315 km/h196 mph Restricted 308 km/h191 mph

8.5 L/100 km

27.7 mpg US

33.2 mpg UK

Porsche911 (991)Carrera GTS 3.8

Power	430 hp 321 kW
0-100 km/h	4.0 s
Top speed 304 km/h 189 mph

8.7 L/100 km

27.0 mpg US

32.5 mpg UK

Porsche 911 (991 II) Carrera 4 GTS 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 4 GTS 3.0	8.5 L/100 km 27.7 mpg US 33.2 mpg UK	3.6 s
Porsche911 (991)Carrera GTS 3.8	8.7 L/100 km 27.0 mpg US 32.5 mpg UK	4.0 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Porsche911 (991 II)Carrera 4 GTS 3.0	297 hp/t 221 kW/t 3.4 kg/hp	8.5 L/100 km 27.7 mpg US 33.2 mpg UK
Porsche911 (991)Carrera GTS 3.8	298 hp/t 222 kW/t 3.4 kg/hp	8.7 L/100 km 27.0 mpg US 32.5 mpg UK

Detailed score breakdown

Vehicle

Porsche911 (991 II)Carrera 4 GTS 3.0

Porsche911 (991)Carrera GTS 3.8

Power

450 hp

336 kW

430 hp

321 kW

Torque

550 Nm

406 lb-ft

440 Nm

325 lb-ft

Acceleration

3.6 s

4.0 s

Top speed

Unrestricted

315 km/h196 mph

Restricted

308 km/h191 mph

304 km/h

189 mph

Lightness

1,515 kg

3,340 lb

1,445 kg

3,186 lb

Fuel consumption

8.5 L/100 km

27.7 mpg US

33.2 mpg UK

8.7 L/100 km

27.0 mpg US

32.5 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	385 L 13.6 cu ft
Length	4,528 mm 178.3 in
Height	1,284 mm 50.6 in

Doors/seats	2 doors 4 seats
Trunk	385 L 13.6 cu ft
Length	4,509 mm 177.5 in
Height	1,295 mm 51.0 in

Range score

788 km

490 mi

736 km

457 mi

CO2 score

192 g/km

202 g/km

Trunk score

385 L

13.6 cu ft

385 L

13.6 cu ft

Power-to-weight score

297 hp/t

221 kW/t

3.4 kg/hp

298 hp/t

222 kW/t

3.4 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 4 GTS 3.0	Porsche 911 (991) Carrera GTS 3.8
Consumption	8.5 L/100 km27.7 mpg US33.2 mpg UK	8.7 L/100 km27 mpg US32.5 mpg UK
Cost / 100 km	14.88 LC100 km	15.22 LC100 km
Cost / 100 mi	23.94 LC100 mi	24.50 LC100 mi
Annual fuel used	1,275 L337 US gal280 UK gal	1,305 L345 US gal287 UK gal
Annual fuel cost	2,231 LC/year	2,284 LC/year