Car comparison

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

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

New comparison

Porsche 911 (991 II)

GT3 4.0

500 hp3996 ccGasolineRWDManualNaturally aspiratedCoupe2017-2018
VS

Porsche 911 (991)

GT3 RS 4.0

500 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2015-2017

Comparison overview

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

Best choices

Porsche 911 (991 II) GT3 4.0

  • Fastest top speed
    330 km/h
    205 mph Unrestricted
    320 km/h
    199 mph Restricted
  • Most powerful
    500 hp
    373 kW
  • Highest torque
    460 Nm
    339 lb-ft
  • Lightest
    1,413 kg
    3,115 lb
  • Best power-to-weight
    354 hp/t
    264 kW/t
    2.8 kg/hp
  • Lowest highway consumption
    8.8 L/100 km
    26.7 mpg US
    32.1 mpg UK
  • Lowest CO2 emissions
    290 g/km
  • Largest trunk
    125 L
  • Best practicality score
    31/100

Porsche 911 (991) GT3 RS 4.0

  • Quickest 0-100 km/h
    3.3 s
  • 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
  • Best overall score
    70/100
  • Best performance score
    89/100
  • Best economy score
    73/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 4.0Porsche911 (991)GT3 RS 4.0
Power
500hp373kW
500hp373kW
Torque
460Nm339lb-ft
460Nm339lb-ft
Curb weight
1,413kg3,115lb
1,420kg3,131lb
Gross weight
1,760kg3,880lb
1,720kg3,792lb
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Calculated
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
To 99% top speed
69.5s99% target: 327 km/h / 203 mph
Calculated
47.9s99% target: 317 km/h / 197 mph
Calculated
0-100 km/h
3.9s
3.3s
0-200 km/h
11.4s
9.2s
Calculated
0-60 mph
3.7s
Calculated
3.2s
Calculated
Fuel consumption
12.9L/100 km18.2mpg US21.9mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption city
19.7L/100 km11.9mpg US14.3mpg UK
19.2L/100 km12.3mpg US14.7mpg UK
Fuel consumption highway
8.8L/100 km26.7mpg US32.1mpg UK
8.9L/100 km26.4mpg US31.7mpg UK
Quarter mile
11.7s
Calculated
10.9s
Calculated
Power-to-weight
354hp/t264kW/t161hp/1000 lb
Calculated
352hp/t263kW/t160hp/1000 lb
Calculated
Torque-to-weight
326Nm/t218lb-ft/ton
Calculated
324Nm/t217lb-ft/ton
Calculated
Estimated range
496km308mi
Calculated
504km313mi
Calculated
Displacement
3,996cc244cu in
3,996cc244cu in
Length
4,562mm180in
4,545mm179in
Width
1,852mm73in
1,880mm74in
Height
1,271mm50in
1,291mm51in
Wheelbase
2,457mm97in
2,457mm97in
Front track
1,551mm61in
1,587mm62in
Rear track
1,555mm61in
1,557mm61in
Ground clearance
88mm3in
-
Trunk volume
125L
125L
Max trunk volume-
260L
Doors
2
2
Seats
2
2
Fuel tank
64L
64L
CO2 emissions
290g/km
296g/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 4.0Porsche 911 (991) GT3 RS 4.0PowerTorque
  • Porsche 911 (991 II) GT3 4.0: Power / Torque
  • Porsche 911 (991) GT3 RS 4.0: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)GT3 4.08,250 rpm6,000 rpm9,000 rpm
Porsche911 (991)GT3 RS 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 4.0Porsche911 (991)GT3 RS 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.7 s
3.2 s
0-100 km/h
0-62 mph
3.9 s
3.3 s
0-200 km/h
0-124 mph
11.4 s
9.2 s
0-200 mph
0-322 km/h
54.3 s
-
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Likely limited
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
Drag race simulation
60 ft
18 m
2.0 s
1.9 s
330 ft
101 m
5.2 s
4.9 s
1/8 mile
201 m
7.7 s
7.2 s
1000 ft
305 m
9.9 s
9.2 s
1/4 mile
402 m
11.7 s
10.9 s
Trap speed
1/4 mile
402 m
203 km/h
126 mph
218 km/h
136 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)GT3 4.0
500 hp
373 kW
Porsche911 (991)GT3 RS 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 II)GT3 4.0
460 Nm
339 lb-ft
Porsche911 (991)GT3 RS 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 4.0
1,413 kg
3,115 lb
Porsche911 (991)GT3 RS 4.0
1,420 kg
3,131 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 4.0
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Porsche911 (991)GT3 RS 4.0
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 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 4.03.9 s
Porsche911 (991)GT3 RS 4.03.3 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: 0.6 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 4.0
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
Porsche911 (991)GT3 RS 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 II)GT3 4.0
354 hp/t
264 kW/t
2.8 kg/hp
Porsche911 (991)GT3 RS 4.0
352 hp/t
263 kW/t
2.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche911 (991 II)GT3 4.0
496 km
308 mi
Porsche911 (991)GT3 RS 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 II)GT3 4.0
500 hp
373 kW
3.9 s
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Porsche911 (991)GT3 RS 4.0
500 hp
373 kW
3.3 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 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 4.0
Power
500 hp
373 kW
0-100 km/h3.9 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 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
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

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 4.0
Power
500 hp
373 kW
0-100 km/h3.9 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
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

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 II)GT3 4.0
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
3.9 s
Porsche911 (991)GT3 RS 4.0
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.3 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 4.0
354 hp/t
264 kW/t
2.8 kg/hp
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
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

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)GT3 4.0Porsche911 (991)GT3 RS 4.0
Power
500 hp
373 kW
500 hp
373 kW
Torque
460 Nm
339 lb-ft
460 Nm
339 lb-ft
Acceleration
3.9 s
3.3 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Lightness
1,413 kg
3,115 lb
1,420 kg
3,131 lb
Fuel consumption
12.9 L/100 km
18.2 mpg US
21.9 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
4,562 mm
179.6 in
Height
1,271 mm
50.0 in
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
Range score
496 km
308 mi
504 km
313 mi
CO2 score
290 g/km
296 g/km
Trunk score
125 L
4.4 cu ft
125 L
4.4 cu ft
Power-to-weight score
354 hp/t
264 kW/t
2.8 kg/hp
352 hp/t
263 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 (991 II) GT3 4.0Porsche 911 (991) GT3 RS 4.0
Consumption12.9 L/100 km18.2 mpg US21.9 mpg UK12.7 L/100 km18.5 mpg US22.2 mpg UK
Cost / 100 km22.58 LC100 km22.22 LC100 km
Cost / 100 mi36.33 LC100 mi35.77 LC100 mi
Annual fuel used1,935 L511 US gal426 UK gal1,905 L503 US gal419 UK gal
Annual fuel cost3,386 LC/year3,334 LC/year

Head-to-head comparisons

Porsche 911 (991 II) GT3 4.0

  • Is 7 kg lighter
  • Has 10 km/h (6 mph) higher top speed
  • Has 2 hp/t better power-to-weight
  • Emits 6 g/km less CO2

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption

Porsche 911 (991) GT3 RS 4.0

  • Is 0.6 s quicker from 0-100 km/h
  • Uses 0.2 L/100 km less fuel
  • Has 8 km (5 mi) more estimated range

Pros

  • Quickest 0-100 km/h in this comparison
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Heaviest
  • Lowest top speed
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) GT3 4.0
Porsche 911 (991) GT3 RS 4.0
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Porsche 911 (991 II) GT3 4.0 vs Porsche 911 (991) GT3 RS 4.0 - car comparison - FastVsFaster