Car comparison

Porsche 911 (992) Turbo 3.8vsPorsche 911 (991 II) GT3 RS 4.0

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

New comparison

Porsche 911 (992)

Turbo 3.8

580 hp3745 ccGasolineAWDDual-clutchTwin-turboCoupe2020-2024
VS

Porsche 911 (991 II)

GT3 RS 4.0

520 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2018-2019

Comparison overview

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

Best choices

Porsche 911 (992) Turbo 3.8

  • Quickest 0-100 km/h
    2.8 s
  • Fastest top speed
    330 km/h
    205 mph Unrestricted
    320 km/h
    199 mph Restricted
  • Most powerful
    580 hp
    433 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Lowest combined fuel consumption
    11.1 L/100 km
    21.2 mpg US
    25.4 mpg UK
  • Lowest city consumption
    15.3 L/100 km
    15.4 mpg US
    18.5 mpg UK
  • Lowest highway consumption
    8.7 L/100 km
    27.0 mpg US
    32.5 mpg UK
  • Best estimated range
    604 km
    375 mi
  • Largest trunk
    264 L
  • Best overall score
    79/100
  • Best performance score
    94/100
  • Best economy score
    77/100
  • Best practicality score
    46/100

Specification comparison

Specification comparison
ModelPorsche911 (992)Turbo 3.8Porsche911 (991 II)GT3 RS 4.0
Power
580hp433kW
520hp388kW
Torque
750Nm553lb-ft
470Nm347lb-ft
Curb weight
1,640kg3,616lb
1,430kg3,153lb
Gross weight
2,040kg4,497lb
1,793kg3,953lb
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Calculated
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Calculated
To 99% top speed
78.8s99% target: 327 km/h / 203 mph
Calculated
45.6s99% target: 322 km/h / 200 mph
Calculated
0-100 km/h
2.8s
3.2s
0-200 km/h
9.7s
8.7s
Calculated
0-60 mph
2.7s
Calculated
3.1s
Calculated
Fuel consumption
11.1L/100 km21.2mpg US25.4mpg UK
12.8L/100 km18.4mpg US22.1mpg UK
Fuel consumption city
15.3L/100 km15.4mpg US18.5mpg UK
19.2L/100 km12.3mpg US14.7mpg UK
Fuel consumption highway
8.7L/100 km27mpg US32.5mpg UK
9L/100 km26.1mpg US31.4mpg UK
Quarter mile
10.7s
Calculated
10.7s
Calculated
Power-to-weight
354hp/t264kW/t160hp/1000 lb
Calculated
364hp/t271kW/t165hp/1000 lb
Calculated
Torque-to-weight
457Nm/t306lb-ft/ton
Calculated
329Nm/t220lb-ft/ton
Calculated
Estimated range
604km375mi
Calculated
500km311mi
Calculated
Displacement
3,745cc229cu in
3,996cc244cu in
Length
4,535mm179in
4,557mm179in
Width
1,900mm75in
1,880mm74in
Height
1,303mm51in
1,297mm51in
Wheelbase
2,450mm96in
2,453mm97in
Front track
1,583mm62in
1,588mm63in
Rear track
1,600mm63in
1,557mm61in
Trunk volume
264L
125L
Doors
2
2
Seats
4
2
Fuel tank
67L
64L
CO2 emissions-
291g/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 (992) Turbo 3.8Porsche 911 (991 II) GT3 RS 4.0PowerTorque
  • Porsche 911 (992) Turbo 3.8: Power / Torque
  • Porsche 911 (991 II) GT3 RS 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (992)Turbo 3.86,500 rpm2,250-4,500 rpm7,200 rpm
Porsche911 (991 II)GT3 RS 4.08,250 rpm6,000 rpm9,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (992)Turbo 3.8Porsche911 (991 II)GT3 RS 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
2.7 s
3.1 s
0-100 km/h
0-62 mph
2.8 s
3.2 s
0-200 km/h
0-124 mph
9.7 s
8.7 s
0-200 mph
0-322 km/h
59.2 s
46.0 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Likely limited
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Likely limited
Drag race simulation
60 ft
18 m
1.6 s
1.9 s
330 ft
101 m
4.5 s
4.8 s
1/8 mile
201 m
6.8 s
7.1 s
1000 ft
305 m
8.9 s
9.1 s
1/4 mile
402 m
10.7 s
10.7 s
Trap speed
1/4 mile
402 m
209 km/h
130 mph
223 km/h
139 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (992)Turbo 3.8
580 hp
433 kW
Porsche911 (991 II)GT3 RS 4.0
520 hp
388 kW

Porsche 911 (992) Turbo 3.8 has 60 hp more than Porsche 911 (991 II) GT3 RS 4.0.

The biggest power difference is between Porsche 911 (991 II) GT3 RS 4.0 and Porsche 911 (992) Turbo 3.8: 60 hp (45 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (992)Turbo 3.8
750 Nm
553 lb-ft
Porsche911 (991 II)GT3 RS 4.0
470 Nm
347 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (992)Turbo 3.8
1,640 kg
3,616 lb
Porsche911 (991 II)GT3 RS 4.0
1,430 kg
3,153 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 (992)Turbo 3.8
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Porsche911 (991 II)GT3 RS 4.0
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche911 (992)Turbo 3.82.8 s
Porsche911 (991 II)GT3 RS 4.03.2 s

The biggest 0-100 km/h difference is between Porsche 911 (992) Turbo 3.8 and Porsche 911 (991 II) GT3 RS 4.0: 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
VehicleValue
Porsche911 (992)Turbo 3.8
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Porsche911 (991 II)GT3 RS 4.0
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

The biggest fuel consumption difference is between Porsche 911 (992) Turbo 3.8 and Porsche 911 (991 II) GT3 RS 4.0: 1.7 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 (992)Turbo 3.8
354 hp/t
264 kW/t
2.8 kg/hp
Porsche911 (991 II)GT3 RS 4.0
364 hp/t
271 kW/t
2.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (992)Turbo 3.8
604 km
375 mi
Porsche911 (991 II)GT3 RS 4.0
500 km
311 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (992)Turbo 3.8
580 hp
433 kW
2.8 s
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Porsche911 (991 II)GT3 RS 4.0
520 hp
388 kW
3.2 s
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 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 (992)Turbo 3.8
Power
580 hp
433 kW
0-100 km/h2.8 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Doors/seats
2 doors
4 seats
Trunk
264 L
9.3 cu ft
Length
4,535 mm
178.5 in
Height
1,303 mm
51.3 in
Porsche911 (991 II)GT3 RS 4.0
Power
520 hp
388 kW
0-100 km/h3.2 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,557 mm
179.4 in
Height
1,297 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 (992)Turbo 3.8
Power
580 hp
433 kW
0-100 km/h2.8 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Porsche911 (991 II)GT3 RS 4.0
Power
520 hp
388 kW
0-100 km/h3.2 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Porsche 911 (992) Turbo 3.8 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 (992)Turbo 3.8
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
2.8 s
Porsche911 (991 II)GT3 RS 4.0
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
3.2 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 (992)Turbo 3.8
354 hp/t
264 kW/t
2.8 kg/hp
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Porsche911 (991 II)GT3 RS 4.0
364 hp/t
271 kW/t
2.8 kg/hp
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (992)Turbo 3.8Porsche911 (991 II)GT3 RS 4.0
Power
580 hp
433 kW
520 hp
388 kW
Torque
750 Nm
553 lb-ft
470 Nm
347 lb-ft
Acceleration
2.8 s
3.2 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Lightness
1,640 kg
3,616 lb
1,430 kg
3,153 lb
Fuel consumption
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
264 L
9.3 cu ft
Length
4,535 mm
178.5 in
Height
1,303 mm
51.3 in
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,557 mm
179.4 in
Height
1,297 mm
51.1 in
Range score
604 km
375 mi
500 km
311 mi
CO2 score
-
291 g/km
Trunk score
264 L
9.3 cu ft
125 L
4.4 cu ft
Power-to-weight score
354 hp/t
264 kW/t
2.8 kg/hp
364 hp/t
271 kW/t
2.8 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 (992) Turbo 3.8Porsche 911 (991 II) GT3 RS 4.0
Consumption11.1 L/100 km21.2 mpg US25.4 mpg UK12.8 L/100 km18.4 mpg US22.1 mpg UK
Cost / 100 km19.43 LC100 km22.40 LC100 km
Cost / 100 mi31.26 LC100 mi36.05 LC100 mi
Annual fuel used1,665 L440 US gal366 UK gal1,920 L507 US gal422 UK gal
Annual fuel cost2,914 LC/year3,360 LC/year

Head-to-head comparisons

Porsche 911 (992) Turbo 3.8

  • Has 60 hp more
  • Has 280 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Uses 1.7 L/100 km less fuel
  • Has 104 km (64 mi) more estimated range
  • Has 139 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Heaviest

Porsche 911 (991 II) GT3 RS 4.0

  • Is 210 kg lighter
  • Has 10 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (992) Turbo 3.8
Porsche 911 (991 II) GT3 RS 4.0
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