Car comparison

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

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

New comparison

Porsche 911 (991 II)

Carrera 4S 3.0

420 hp2981 ccGasolineAWDManualTwin-turboCoupe2015-2018
VS

Porsche 911 (991)

Carrera S 3.8

400 hp3800 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2011-2015

Comparison overview

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

Best choices

Porsche 911 (991) Carrera S 3.8

  • Quickest 0-100 km/h
    4.1 s
  • Lightest
    1,435 kg
    3,164 lb
  • Lowest combined fuel consumption
    8.7 L/100 km
    27.0 mpg US
    32.5 mpg UK
  • Lowest city consumption
    12.1 L/100 km
    19.4 mpg US
    23.3 mpg UK
  • Lowest highway consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Lowest CO2 emissions
    202 g/km
  • Largest trunk
    340 L
  • Best overall score
    70/100
  • Best practicality score
    48/100

Porsche 911 (991 II) Carrera 4S 3.0

  • Fastest top speed
    305 km/h
    190 mph
  • Most powerful
    420 hp
    313 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best power-to-weight
    282 hp/t
    210 kW/t
    3.5 kg/hp
  • Best estimated range
    764 km
    475 mi
  • Best performance score
    82/100
  • Best economy score
    83/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)Carrera 4S 3.0Porsche911 (991)Carrera S 3.8
Power
420hp313kW
400hp298kW
Torque
500Nm369lb-ft
440Nm325lb-ft
Curb weight
1,490kg3,285lb
1,435kg3,164lb
Gross weight
1,950kg4,299lb
1,850kg4,079lb
Top speed
305 km/h
190 mph
302 km/h
188 mph
To 99% top speed
60.8s99% target: 302 km/h / 188 mph
Calculated
57.3s99% target: 299 km/h / 186 mph
Calculated
0-100 km/h
4.2s
4.1s
0-200 km/h
12.3s
Calculated
12.0s
Calculated
0-60 mph
4.0s
Calculated
3.9s
Calculated
Fuel consumption
8.9L/100 km26.4mpg US31.7mpg UK
8.7L/100 km27mpg US32.5mpg UK
Fuel consumption city
12.4L/100 km19mpg US22.8mpg UK
12.1L/100 km19.4mpg US23.3mpg UK
Fuel consumption highway
6.8L/100 km34.6mpg US41.5mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
Quarter mile
12.0s
Calculated
11.9s
Calculated
Power-to-weight
282hp/t210kW/t128hp/1000 lb
Calculated
279hp/t208kW/t126hp/1000 lb
Calculated
Torque-to-weight
336Nm/t225lb-ft/ton
Calculated
307Nm/t205lb-ft/ton
Calculated
Estimated range
764km475mi
Calculated
736km457mi
Calculated
Displacement
2,981cc182cu in
3,800cc232cu in
Length
4,499mm177in
4,491mm177in
Width
1,852mm73in
1,808mm71in
Height
1,298mm51in
1,295mm51in
Wheelbase
2,450mm96in
2,450mm96in
Front track
1,543mm61in
1,538mm61in
Rear track
1,558mm61in
1,516mm60in
Trunk volume
125L
340L
Max trunk volume
260L
-
Doors
2
2
Seats
4
4
Fuel tank
68L
64L
CO2 emissions
204g/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 4S 3.0Porsche 911 (991) Carrera S 3.8PowerTorque
  • Porsche 911 (991 II) Carrera 4S 3.0: Power / Torque
  • Porsche 911 (991) Carrera S 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)Carrera 4S 3.06,500 rpm1,700-5,000 rpm6,750 rpm
Porsche911 (991)Carrera S 3.87,400 rpm5,600 rpm7,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)Carrera 4S 3.0Porsche911 (991)Carrera S 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.0 s
3.9 s
0-100 km/h
0-62 mph
4.2 s
4.1 s
0-200 km/h
0-124 mph
12.3 s
12.0 s
Top speed
305 km/h
190 mph
302 km/h
188 mph
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.4 s
5.3 s
1/8 mile
201 m
8.0 s
7.9 s
1000 ft
305 m
10.2 s
10.1 s
1/4 mile
402 m
12.0 s
11.9 s
Trap speed
1/4 mile
402 m
198 km/h
123 mph
199 km/h
124 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera 4S 3.0
420 hp
313 kW
Porsche911 (991)Carrera S 3.8
400 hp
298 kW

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

The biggest power difference is between Porsche 911 (991) Carrera S 3.8 and Porsche 911 (991 II) Carrera 4S 3.0: 20 hp (15 kW).

Torque comparison

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

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

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)Carrera 4S 3.0
1,490 kg
3,285 lb
Porsche911 (991)Carrera S 3.8
1,435 kg
3,164 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 II)Carrera 4S 3.0
305 km/h
190 mph
Porsche911 (991)Carrera S 3.8
302 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 II)Carrera 4S 3.04.2 s
Porsche911 (991)Carrera S 3.84.1 s

Although Porsche 911 (991 II) Carrera 4S 3.0 has more power, Porsche 911 (991) Carrera S 3.8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 (991) Carrera S 3.8 and Porsche 911 (991 II) Carrera 4S 3.0: 0.1 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 II)Carrera 4S 3.0
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
Porsche911 (991)Carrera S 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
VehicleValue
Porsche911 (991 II)Carrera 4S 3.0
282 hp/t
210 kW/t
3.5 kg/hp
Porsche911 (991)Carrera S 3.8
279 hp/t
208 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 II)Carrera 4S 3.0
764 km
475 mi
Porsche911 (991)Carrera S 3.8
736 km
457 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991 II)Carrera 4S 3.0
420 hp
313 kW
4.2 s
305 km/h
190 mph
Porsche911 (991)Carrera S 3.8
400 hp
298 kW
4.1 s
302 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 II)Carrera 4S 3.0
Power
420 hp
313 kW
0-100 km/h4.2 s
Top speed
305 km/h
190 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
Porsche911 (991)Carrera S 3.8
Power
400 hp
298 kW
0-100 km/h4.1 s
Top speed
302 km/h
188 mph
Doors/seats
2 doors
4 seats
Trunk
340 L
12.0 cu ft
Length
4,491 mm
176.8 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
Porsche911 (991 II)Carrera 4S 3.0
Power
420 hp
313 kW
0-100 km/h4.2 s
Top speed
305 km/h
190 mph
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
Porsche911 (991)Carrera S 3.8
Power
400 hp
298 kW
0-100 km/h4.1 s
Top speed
302 km/h
188 mph
8.7 L/100 km
27.0 mpg US
32.5 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 II)Carrera 4S 3.0
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
4.2 s
Porsche911 (991)Carrera S 3.8
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.1 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 II)Carrera 4S 3.0
282 hp/t
210 kW/t
3.5 kg/hp
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
Porsche911 (991)Carrera S 3.8
279 hp/t
208 kW/t
3.6 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)Carrera 4S 3.0Porsche911 (991)Carrera S 3.8
Power
420 hp
313 kW
400 hp
298 kW
Torque
500 Nm
369 lb-ft
440 Nm
325 lb-ft
Acceleration
4.2 s
4.1 s
Top speed
305 km/h
190 mph
302 km/h
188 mph
Lightness
1,490 kg
3,285 lb
1,435 kg
3,164 lb
Fuel consumption
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
340 L
12.0 cu ft
Length
4,491 mm
176.8 in
Height
1,295 mm
51.0 in
Range score
764 km
475 mi
736 km
457 mi
CO2 score
204 g/km
202 g/km
Trunk score
125 L
4.4 cu ft
340 L
12.0 cu ft
Power-to-weight score
282 hp/t
210 kW/t
3.5 kg/hp
279 hp/t
208 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 II) Carrera 4S 3.0Porsche 911 (991) Carrera S 3.8
Consumption8.9 L/100 km26.4 mpg US31.7 mpg UK8.7 L/100 km27 mpg US32.5 mpg UK
Cost / 100 km15.58 LC100 km15.22 LC100 km
Cost / 100 mi25.07 LC100 mi24.50 LC100 mi
Annual fuel used1,335 L353 US gal294 UK gal1,305 L345 US gal287 UK gal
Annual fuel cost2,336 LC/year2,284 LC/year

Head-to-head comparisons

Porsche 911 (991 II) Carrera 4S 3.0

  • Has 20 hp more
  • Has 60 Nm more
  • Has 3 km/h (2 mph) higher top speed
  • Has 3 hp/t better power-to-weight
  • Has 28 km (18 mi) more estimated range

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Porsche 911 (991) Carrera S 3.8

  • Is 55 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 0.2 L/100 km less fuel
  • Has 215 L more trunk volume
  • Emits 2 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Lowest combined fuel consumption
  • Largest trunk

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) Carrera 4S 3.0
Porsche 911 (991) Carrera S 3.8
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Porsche 911 (991 II) Carrera 4S 3.0 vs Porsche 911 (991) Carrera S 3.8 - car comparison - FastVsFaster