Car comparison

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

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

New comparison

Porsche 911 (991)

GT3 RS 4.0

500 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2015-2017
VS

Porsche 911 (991 II)

GT3 4.0

500 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2017-2018

Comparison overview

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

Best choices

Porsche 911 (991) GT3 RS 4.0

  • Quickest 0-100 km/h
    3.3 s
  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Most powerful
    500 hp
    373 kW
  • Highest torque
    460 Nm
    339 lb-ft
  • Lightest
    1,420 kg
    3,131 lb
  • Best power-to-weight
    352 hp/t
    263 kW/t
    2.8 kg/hp
  • Lowest combined fuel consumption
    12.7 L/100 km
    18.5 mpg US
    22.2 mpg UK
  • Lowest city consumption
    19.2 L/100 km
    12.3 mpg US
    14.7 mpg UK
  • Best estimated range
    504 km
    313 mi
  • Largest trunk
    125 L
  • Best overall score
    70/100
  • Best performance score
    89/100
  • Best economy score
    73/100
  • Best practicality score
    31/100

Specification comparison

Specification comparison
ModelPorsche911 (991)GT3 RS 4.0Porsche911 (991 II)GT3 4.0
Power
500hp373kW
500hp373kW
Torque
460Nm339lb-ft
460Nm339lb-ft
Curb weight
1,420kg3,131lb
1,430kg3,153lb
Gross weight
1,720kg3,792lb
1,777kg3,918lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
318 km/h
198 mph
To 99% top speed
47.9s99% target: 317 km/h / 197 mph
Calculated
71.2s99% target: 315 km/h / 196 mph
Calculated
0-100 km/h
3.3s
3.4s
0-200 km/h
9.2s
Calculated
11.0s
0-60 mph
3.2s
Calculated
3.2s
Calculated
Fuel consumption
12.7L/100 km18.5mpg US22.2mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
19.4L/100 km12.1mpg US14.6mpg UK
Fuel consumption highway
8.9L/100 km26.4mpg US31.7mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Quarter mile
10.9s
Calculated
11.3s
Calculated
Power-to-weight
352hp/t263kW/t160hp/1000 lb
Calculated
350hp/t261kW/t159hp/1000 lb
Calculated
Torque-to-weight
324Nm/t217lb-ft/ton
Calculated
322Nm/t215lb-ft/ton
Calculated
Estimated range
504km313mi
Calculated
504km313mi
Calculated
Displacement
3,996cc244cu in
3,996cc244cu in
Length
4,545mm179in
4,562mm180in
Width
1,880mm74in
1,852mm73in
Height
1,291mm51in
1,271mm50in
Wheelbase
2,457mm97in
2,457mm97in
Front track
1,587mm62in
1,551mm61in
Rear track
1,557mm61in
1,555mm61in
Ground clearance-
88mm3in
Trunk volume
125L
125L
Max trunk volume
260L
-
Doors
2
2
Seats
2
2
Fuel tank
64L
64L
CO2 emissions
296g/km
288g/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) GT3 RS 4.0Porsche 911 (991 II) GT3 4.0PowerTorque
  • Porsche 911 (991) GT3 RS 4.0: Power / Torque
  • Porsche 911 (991 II) GT3 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991)GT3 RS 4.08,250 rpm6,250 rpm8,500 rpm
Porsche911 (991 II)GT3 4.08,250 rpm6,000 rpm9,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991)GT3 RS 4.0Porsche911 (991 II)GT3 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.2 s
3.2 s
0-100 km/h
0-62 mph
3.3 s
3.4 s
0-200 km/h
0-124 mph
9.2 s
11.0 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
318 km/h
198 mph
Drag race simulation
60 ft
18 m
1.9 s
1.8 s
330 ft
101 m
4.9 s
4.9 s
1/8 mile
201 m
7.2 s
7.3 s
1000 ft
305 m
9.2 s
9.5 s
1/4 mile
402 m
10.9 s
11.3 s
Trap speed
1/4 mile
402 m
218 km/h
136 mph
203 km/h
126 mph

Power comparison

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

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

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (991)GT3 RS 4.0
460 Nm
339 lb-ft
Porsche911 (991 II)GT3 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)GT3 RS 4.0
1,420 kg
3,131 lb
Porsche911 (991 II)GT3 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 (991)GT3 RS 4.0
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Porsche911 (991 II)GT3 4.0
318 km/h
198 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche911 (991)GT3 RS 4.03.3 s
Porsche911 (991 II)GT3 4.03.4 s

The biggest 0-100 km/h difference is between Porsche 911 (991) GT3 RS 4.0 and Porsche 911 (991 II) GT3 4.0: 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)GT3 RS 4.0
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
Porsche911 (991 II)GT3 4.0
12.7 L/100 km
18.5 mpg US
22.2 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)GT3 RS 4.0
352 hp/t
263 kW/t
2.8 kg/hp
Porsche911 (991 II)GT3 4.0
350 hp/t
261 kW/t
2.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991)GT3 RS 4.0
504 km
313 mi
Porsche911 (991 II)GT3 4.0
504 km
313 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991)GT3 RS 4.0
500 hp
373 kW
3.3 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Porsche911 (991 II)GT3 4.0
500 hp
373 kW
3.4 s
318 km/h
198 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)GT3 RS 4.0
Power
500 hp
373 kW
0-100 km/h3.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,545 mm
178.9 in
Height
1,291 mm
50.8 in
Porsche911 (991 II)GT3 4.0
Power
500 hp
373 kW
0-100 km/h3.4 s
Top speed
318 km/h
198 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,562 mm
179.6 in
Height
1,271 mm
50.0 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)GT3 RS 4.0
Power
500 hp
373 kW
0-100 km/h3.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
Porsche911 (991 II)GT3 4.0
Power
500 hp
373 kW
0-100 km/h3.4 s
Top speed
318 km/h
198 mph
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

Porsche 911 (991) 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)GT3 RS 4.0
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.3 s
Porsche911 (991 II)GT3 4.0
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.4 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)GT3 RS 4.0
352 hp/t
263 kW/t
2.8 kg/hp
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
Porsche911 (991 II)GT3 4.0
350 hp/t
261 kW/t
2.9 kg/hp
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)GT3 RS 4.0Porsche911 (991 II)GT3 4.0
Power
500 hp
373 kW
500 hp
373 kW
Torque
460 Nm
339 lb-ft
460 Nm
339 lb-ft
Acceleration
3.3 s
3.4 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
318 km/h
198 mph
Lightness
1,420 kg
3,131 lb
1,430 kg
3,153 lb
Fuel consumption
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,545 mm
178.9 in
Height
1,291 mm
50.8 in
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,562 mm
179.6 in
Height
1,271 mm
50.0 in
Range score
504 km
313 mi
504 km
313 mi
CO2 score
296 g/km
288 g/km
Trunk score
125 L
4.4 cu ft
125 L
4.4 cu ft
Power-to-weight score
352 hp/t
263 kW/t
2.8 kg/hp
350 hp/t
261 kW/t
2.9 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) GT3 RS 4.0Porsche 911 (991 II) GT3 4.0
Consumption12.7 L/100 km18.5 mpg US22.2 mpg UK12.7 L/100 km18.5 mpg US22.2 mpg UK
Cost / 100 km22.22 LC100 km22.22 LC100 km
Cost / 100 mi35.77 LC100 mi35.77 LC100 mi
Annual fuel used1,905 L503 US gal419 UK gal1,905 L503 US gal419 UK gal
Annual fuel cost3,334 LC/year3,334 LC/year

Head-to-head comparisons

Porsche 911 (991) GT3 RS 4.0

  • Is 10 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Has 2 hp/t better power-to-weight

Pros

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

Cons

  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991) GT3 RS 4.0
Porsche 911 (991 II) GT3 4.0
Compare selected cars
2 vehicles selected

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