Car comparison

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

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

New comparison

Porsche 911 (991)

Carrera GTS 3.8

430 hp3800 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2014-2015
VS

Porsche 911 (991 II)

Carrera 4S 3.0

420 hp2981 ccGasolineAWDDual-clutchTwin-turboCoupe2015-2018

Comparison overview

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

Best choices

Porsche 911 (991) Carrera GTS 3.8

  • Quickest 0-100 km/h
    4.0 s
  • Fastest top speed
    304 km/h
    189 mph
  • Most powerful
    430 hp
    321 kW
  • Lightest
    1,445 kg
    3,186 lb
  • Best power-to-weight
    298 hp/t
    222 kW/t
    3.4 kg/hp
  • Largest trunk
    385 L
  • Best overall score
    72/100
  • Best performance score
    82/100
  • Best practicality score
    50/100

Porsche 911 (991 II) Carrera 4S 3.0

  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest combined fuel consumption
    7.9 L/100 km
    29.8 mpg US
    35.8 mpg UK
  • Lowest city consumption
    10.3 L/100 km
    22.8 mpg US
    27.4 mpg UK
  • Lowest highway consumption
    6.6 L/100 km
    35.6 mpg US
    42.8 mpg UK
  • Lowest CO2 emissions
    180 g/km
  • Best estimated range
    848 km
    527 mi
  • Best economy score
    86/100

Specification comparison

Specification comparison
ModelPorsche911 (991)Carrera GTS 3.8Porsche911 (991 II)Carrera 4S 3.0
Power
430hp321kW
420hp313kW
Torque
440Nm325lb-ft
500Nm369lb-ft
Curb weight
1,445kg3,186lb
1,510kg3,329lb
Gross weight
1,870kg4,123lb
1,965kg4,332lb
Top speed
304 km/h
189 mph
303 km/h
188 mph
To 99% top speed
56.2s99% target: 301 km/h / 187 mph
Calculated
57.8s99% target: 300 km/h / 186 mph
Calculated
0-100 km/h
4.0s
4.0s
0-200 km/h
11.6s
Calculated
11.8s
Calculated
0-60 mph
3.8s
Calculated
3.8s
Calculated
Fuel consumption
8.7L/100 km27mpg US32.5mpg UK
7.9L/100 km29.8mpg US35.8mpg UK
Fuel consumption city
12.2L/100 km19.3mpg US23.2mpg UK
10.3L/100 km22.8mpg US27.4mpg UK
Fuel consumption highway
6.7L/100 km35.1mpg US42.2mpg UK
6.6L/100 km35.6mpg US42.8mpg UK
Quarter mile
11.8s
Calculated
11.8s
Calculated
Power-to-weight
298hp/t222kW/t135hp/1000 lb
Calculated
278hp/t207kW/t126hp/1000 lb
Calculated
Torque-to-weight
304Nm/t204lb-ft/ton
Calculated
331Nm/t222lb-ft/ton
Calculated
Estimated range
736km457mi
Calculated
848km527mi
Calculated
Displacement
3,800cc232cu in
2,981cc182cu in
Length
4,509mm178in
4,499mm177in
Width
1,852mm73in
1,852mm73in
Height
1,295mm51in
1,298mm51in
Wheelbase
2,450mm96in
2,450mm96in
Front track
1,538mm61in
1,543mm61in
Rear track
1,560mm61in
1,558mm61in
Trunk volume
385L
125L
Max trunk volume-
260L
Doors
2
2
Seats
4
4
Fuel tank
64L
67L
CO2 emissions
202g/km
180g/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) Carrera GTS 3.8Porsche 911 (991 II) Carrera 4S 3.0PowerTorque
  • Porsche 911 (991) Carrera GTS 3.8: Power / Torque
  • Porsche 911 (991 II) Carrera 4S 3.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991)Carrera GTS 3.87,500 rpm5,750 rpm7,750 rpm
Porsche911 (991 II)Carrera 4S 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 (991)Carrera GTS 3.8Porsche911 (991 II)Carrera 4S 3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.8 s
3.8 s
0-100 km/h
0-62 mph
4.0 s
4.0 s
0-200 km/h
0-124 mph
11.6 s
11.8 s
Top speed
304 km/h
189 mph
303 km/h
188 mph
Drag race simulation
60 ft
18 m
2.1 s
2.0 s
330 ft
101 m
5.3 s
5.3 s
1/8 mile
201 m
7.8 s
7.8 s
1000 ft
305 m
10.0 s
10.0 s
1/4 mile
402 m
11.8 s
11.8 s
Trap speed
1/4 mile
402 m
201 km/h
125 mph
200 km/h
124 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
430 hp
321 kW
Porsche911 (991 II)Carrera 4S 3.0
420 hp
313 kW

Porsche 911 (991) Carrera GTS 3.8 has 10 hp more than Porsche 911 (991 II) Carrera 4S 3.0.

The biggest power difference is between Porsche 911 (991 II) Carrera 4S 3.0 and Porsche 911 (991) Carrera GTS 3.8: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
440 Nm
325 lb-ft
Porsche911 (991 II)Carrera 4S 3.0
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
1,445 kg
3,186 lb
Porsche911 (991 II)Carrera 4S 3.0
1,510 kg
3,329 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 (991)Carrera GTS 3.8
304 km/h
189 mph
Porsche911 (991 II)Carrera 4S 3.0
303 km/h
188 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.84.0 s
Porsche911 (991 II)Carrera 4S 3.04.0 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 (991)Carrera GTS 3.8
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Porsche911 (991 II)Carrera 4S 3.0
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991 II) Carrera 4S 3.0 and Porsche 911 (991) Carrera GTS 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 (991)Carrera GTS 3.8
298 hp/t
222 kW/t
3.4 kg/hp
Porsche911 (991 II)Carrera 4S 3.0
278 hp/t
207 kW/t
3.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991)Carrera GTS 3.8
736 km
457 mi
Porsche911 (991 II)Carrera 4S 3.0
848 km
527 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991)Carrera GTS 3.8
430 hp
321 kW
4.0 s
304 km/h
189 mph
Porsche911 (991 II)Carrera 4S 3.0
420 hp
313 kW
4.0 s
303 km/h
188 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 (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.0 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
Porsche911 (991 II)Carrera 4S 3.0
Power
420 hp
313 kW
0-100 km/h4.0 s
Top speed
303 km/h
188 mph
Doors/seats
2 doors
4 seats
Trunk
125 L
4.4 cu ft
Length
4,499 mm
177.1 in
Height
1,298 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 (991)Carrera GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.0 s
Top speed
304 km/h
189 mph
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Porsche911 (991 II)Carrera 4S 3.0
Power
420 hp
313 kW
0-100 km/h4.0 s
Top speed
303 km/h
188 mph
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

Porsche 911 (991 II) Carrera 4S 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 (991)Carrera GTS 3.8
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.0 s
Porsche911 (991 II)Carrera 4S 3.0
7.9 L/100 km
29.8 mpg US
35.8 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
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
Porsche911 (991 II)Carrera 4S 3.0
278 hp/t
207 kW/t
3.6 kg/hp
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)Carrera GTS 3.8Porsche911 (991 II)Carrera 4S 3.0
Power
430 hp
321 kW
420 hp
313 kW
Torque
440 Nm
325 lb-ft
500 Nm
369 lb-ft
Acceleration
4.0 s
4.0 s
Top speed
304 km/h
189 mph
303 km/h
188 mph
Lightness
1,445 kg
3,186 lb
1,510 kg
3,329 lb
Fuel consumption
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
125 L
4.4 cu ft
Length
4,499 mm
177.1 in
Height
1,298 mm
51.1 in
Range score
736 km
457 mi
848 km
527 mi
CO2 score
202 g/km
180 g/km
Trunk score
385 L
13.6 cu ft
125 L
4.4 cu ft
Power-to-weight score
298 hp/t
222 kW/t
3.4 kg/hp
278 hp/t
207 kW/t
3.6 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 (991) Carrera GTS 3.8Porsche 911 (991 II) Carrera 4S 3.0
Consumption8.7 L/100 km27 mpg US32.5 mpg UK7.9 L/100 km29.8 mpg US35.8 mpg UK
Cost / 100 km15.22 LC100 km13.83 LC100 km
Cost / 100 mi24.50 LC100 mi22.25 LC100 mi
Annual fuel used1,305 L345 US gal287 UK gal1,185 L313 US gal261 UK gal
Annual fuel cost2,284 LC/year2,074 LC/year

Head-to-head comparisons

Porsche 911 (991) Carrera GTS 3.8

  • Has 10 hp more
  • Is 65 kg lighter
  • Has 1 km/h (1 mph) higher top speed
  • Has 19 hp/t better power-to-weight
  • Has 260 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption
  • Highest CO2 emissions

Porsche 911 (991 II) Carrera 4S 3.0

  • Has 60 Nm more
  • Uses 0.8 L/100 km less fuel
  • Has 112 km (70 mi) more estimated range
  • Emits 22 g/km less CO2

Pros

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

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

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