Car comparison

Porsche 911 (991 II) GT3 RS 4.0vsPorsche 911 (991) R 4.0

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

New comparison

Porsche 911 (991 II)

GT3 RS 4.0

520 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2018-2019
VS

Porsche 911 (991)

R 4.0

500 hp3996 ccGasolineRWDManualNaturally aspiratedCoupe2016-2016

Comparison overview

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

Best choices

Porsche 911 (991 II) GT3 RS 4.0

  • Quickest 0-100 km/h
    3.2 s
  • Fastest top speed
    325 km/h
    202 mph Unrestricted
    312 km/h
    194 mph Restricted
  • Most powerful
    520 hp
    388 kW
  • Highest torque
    470 Nm
    347 lb-ft
  • Lowest combined fuel consumption
    12.8 L/100 km
    18.4 mpg US
    22.1 mpg UK
  • Lowest city consumption
    19.2 L/100 km
    12.3 mpg US
    14.7 mpg UK
  • Lowest highway consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Lowest CO2 emissions
    291 g/km
  • Best estimated range
    500 km
    311 mi
  • Largest trunk
    125 L
  • Best overall score
    71/100
  • Best performance score
    89/100
  • Best economy score
    73/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 RS 4.0Porsche911 (991)R 4.0
Power
520hp388kW
500hp373kW
Torque
470Nm347lb-ft
460Nm339lb-ft
Curb weight
1,430kg3,153lb
1,370kg3,020lb
Gross weight
1,793kg3,953lb
1,660kg3,660lb
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Calculated
323 km/h
201 mph
To 99% top speed
45.6s99% target: 322 km/h / 200 mph
Calculated
71.6s99% target: 320 km/h / 199 mph
Calculated
0-100 km/h
3.2s
3.8s
0-200 km/h
8.7s
Calculated
11.6s
0-60 mph
3.1s
Calculated
3.6s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
20.1L/100 km11.7mpg US14.1mpg UK
Fuel consumption highway
9L/100 km26.1mpg US31.4mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Quarter mile
10.7s
Calculated
11.7s
Calculated
Power-to-weight
364hp/t271kW/t165hp/1000 lb
Calculated
365hp/t272kW/t166hp/1000 lb
Calculated
Torque-to-weight
329Nm/t220lb-ft/ton
Calculated
336Nm/t225lb-ft/ton
Calculated
Estimated range
500km311mi
Calculated
481km299mi
Calculated
Displacement
3,996cc244cu in
3,996cc244cu in
Length
4,557mm179in
4,532mm178in
Width
1,880mm74in
1,852mm73in
Height
1,297mm51in
1,276mm50in
Wheelbase
2,453mm97in
2,475mm97in
Front track
1,588mm63in
1,551mm61in
Rear track
1,557mm61in
1,555mm61in
Trunk volume
125L
125L
Doors
2
2
Seats
2
2
Fuel tank
64L
64L
CO2 emissions
291g/km
308g/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) GT3 RS 4.0Porsche 911 (991) R 4.0PowerTorque
  • Porsche 911 (991 II) GT3 RS 4.0: Power / Torque
  • Porsche 911 (991) R 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)GT3 RS 4.08,250 rpm6,000 rpm9,000 rpm
Porsche911 (991)R 4.08,250 rpm6,250 rpm8,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)GT3 RS 4.0Porsche911 (991)R 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.1 s
3.6 s
0-100 km/h
0-62 mph
3.2 s
3.8 s
0-200 km/h
0-124 mph
8.7 s
11.6 s
0-200 mph
0-322 km/h
46.0 s
90.9 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Likely limited
323 km/h
201 mph
Drag race simulation
60 ft
18 m
1.9 s
1.9 s
330 ft
101 m
4.8 s
5.1 s
1/8 mile
201 m
7.1 s
7.7 s
1000 ft
305 m
9.1 s
9.8 s
1/4 mile
402 m
10.7 s
11.7 s
Trap speed
1/4 mile
402 m
223 km/h
139 mph
201 km/h
125 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)GT3 RS 4.0
520 hp
388 kW
Porsche911 (991)R 4.0
500 hp
373 kW

Porsche 911 (991 II) GT3 RS 4.0 has 20 hp more than Porsche 911 (991) R 4.0.

The biggest power difference is between Porsche 911 (991) R 4.0 and Porsche 911 (991 II) GT3 RS 4.0: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)GT3 RS 4.0
470 Nm
347 lb-ft
Porsche911 (991)R 4.0
460 Nm
339 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)GT3 RS 4.0
1,430 kg
3,153 lb
Porsche911 (991)R 4.0
1,370 kg
3,020 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)GT3 RS 4.0
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Porsche911 (991)R 4.0
323 km/h
201 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)GT3 RS 4.03.2 s
Porsche911 (991)R 4.03.8 s

The biggest 0-100 km/h difference is between Porsche 911 (991 II) GT3 RS 4.0 and Porsche 911 (991) R 4.0: 0.6 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)GT3 RS 4.0
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
Porsche911 (991)R 4.0
13.3 L/100 km
17.7 mpg US
21.2 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991 II) GT3 RS 4.0 and Porsche 911 (991) R 4.0: 0.5 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 II)GT3 RS 4.0
364 hp/t
271 kW/t
2.7 kg/hp
Porsche911 (991)R 4.0
365 hp/t
272 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 (991 II)GT3 RS 4.0
500 km
311 mi
Porsche911 (991)R 4.0
481 km
299 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991 II)GT3 RS 4.0
520 hp
388 kW
3.2 s
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Porsche911 (991)R 4.0
500 hp
373 kW
3.8 s
323 km/h
201 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)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
Porsche911 (991)R 4.0
Power
500 hp
373 kW
0-100 km/h3.8 s
Top speed
323 km/h
201 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,532 mm
178.4 in
Height
1,276 mm
50.2 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)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
Porsche911 (991)R 4.0
Power
500 hp
373 kW
0-100 km/h3.8 s
Top speed
323 km/h
201 mph
13.3 L/100 km
17.7 mpg US
21.2 mpg UK

Porsche 911 (991 II) GT3 RS 4.0 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)GT3 RS 4.0
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
3.2 s
Porsche911 (991)R 4.0
13.3 L/100 km
17.7 mpg US
21.2 mpg UK
3.8 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)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
Porsche911 (991)R 4.0
365 hp/t
272 kW/t
2.7 kg/hp
13.3 L/100 km
17.7 mpg US
21.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)GT3 RS 4.0Porsche911 (991)R 4.0
Power
520 hp
388 kW
500 hp
373 kW
Torque
470 Nm
347 lb-ft
460 Nm
339 lb-ft
Acceleration
3.2 s
3.8 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
323 km/h
201 mph
Lightness
1,430 kg
3,153 lb
1,370 kg
3,020 lb
Fuel consumption
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
13.3 L/100 km
17.7 mpg US
21.2 mpg UK
Practicality
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
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,532 mm
178.4 in
Height
1,276 mm
50.2 in
Range score
500 km
311 mi
481 km
299 mi
CO2 score
291 g/km
308 g/km
Trunk score
125 L
4.4 cu ft
125 L
4.4 cu ft
Power-to-weight score
364 hp/t
271 kW/t
2.8 kg/hp
365 hp/t
272 kW/t
2.7 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) GT3 RS 4.0Porsche 911 (991) R 4.0
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK13.3 L/100 km17.7 mpg US21.2 mpg UK
Cost / 100 km22.40 LC100 km23.28 LC100 km
Cost / 100 mi36.05 LC100 mi37.46 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal1,995 L527 US gal439 UK gal
Annual fuel cost3,360 LC/year3,491 LC/year

Head-to-head comparisons

Porsche 911 (991 II) GT3 RS 4.0

  • Has 20 hp more
  • Has 10 Nm more
  • Is 0.6 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Uses 0.5 L/100 km less fuel
  • Has 19 km (12 mi) more estimated range
  • Emits 17 g/km less CO2

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) R 4.0

  • Is 60 kg lighter
  • Has 1 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
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) GT3 RS 4.0
Porsche 911 (991) R 4.0
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