Car comparison

Porsche 911 (991 II) GT3 4.0vsPorsche 911 (992) 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 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2017-2018
VS

Porsche 911 (992)

GT3 RS 4.0

525 hp3996 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2022-2024

Comparison overview

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

Best choices

Porsche 911 (992) GT3 RS 4.0

  • Quickest 0-100 km/h
    3.2 s
  • Most powerful
    525 hp
    391 kW
  • Highest torque
    465 Nm
    343 lb-ft
  • Best power-to-weight
    362 hp/t
    270 kW/t
    2.8 kg/hp
  • Lowest city consumption
    17.6 L/100 km
    13.4 mpg US
    16.1 mpg UK
  • Best overall score
    71/100
  • Best practicality score
    39/100

Porsche 911 (991 II) GT3 4.0

  • Fastest top speed
    318 km/h
    198 mph
  • Lightest
    1,430 kg
    3,153 lb
  • Lowest combined fuel consumption
    12.7 L/100 km
    18.5 mpg US
    22.2 mpg UK
  • Lowest highway consumption
    8.8 L/100 km
    26.7 mpg US
    32.1 mpg UK
  • Best estimated range
    504 km
    313 mi
  • Best performance score
    88/100
  • Best economy score
    73/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 4.0Porsche911 (992)GT3 RS 4.0
Power
500hp373kW
525hp391kW
Torque
460Nm339lb-ft
465Nm343lb-ft
Curb weight
1,430kg3,153lb
1,450kg3,197lb
Gross weight
1,777kg3,918lb
1,795kg3,957lb
Top speed
318 km/h
198 mph
296 km/h
184 mph
To 99% top speed
71.2s99% target: 315 km/h / 196 mph
Calculated
56.8s99% target: 293 km/h / 182 mph
Calculated
0-100 km/h
3.4s
3.2s
0-200 km/h
11.0s
10.6s
0-60 mph
3.2s
Calculated
3.0s
Calculated
Fuel consumption
12.7L/100 km18.5mpg US22.2mpg UK
12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption city
19.4L/100 km12.1mpg US14.6mpg UK
17.6L/100 km13.4mpg US16.1mpg UK
Fuel consumption highway
8.8L/100 km26.7mpg US32.1mpg UK
9.8L/100 km24mpg US28.8mpg UK
Quarter mile
11.3s
Calculated
11.1s
Calculated
Power-to-weight
350hp/t261kW/t159hp/1000 lb
Calculated
362hp/t270kW/t164hp/1000 lb
Calculated
Torque-to-weight
322Nm/t215lb-ft/ton
Calculated
321Nm/t215lb-ft/ton
Calculated
Estimated range
504km313mi
Calculated
504km313mi
Calculated
Displacement
3,996cc244cu in
3,996cc244cu in
Length
4,562mm180in
4,572mm180in
Width
1,852mm73in
1,900mm75in
Height
1,271mm50in
1,322mm52in
Wheelbase
2,457mm97in
2,457mm97in
Front track
1,551mm61in
-
Rear track
1,555mm61in
-
Ground clearance
88mm3in
100mm4in
Trunk volume
125L
-
Doors
2
2
Seats
2
2
Fuel tank
64L
64L
CO2 emissions
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 II) GT3 4.0Porsche 911 (992) GT3 RS 4.0PowerTorque
  • Porsche 911 (991 II) GT3 4.0: Power / Torque
  • Porsche 911 (992) 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 (992)GT3 RS 4.08,500 rpm6,300 rpm9,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)GT3 4.0Porsche911 (992)GT3 RS 4.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.2 s
3.0 s
0-100 km/h
0-62 mph
3.4 s
3.2 s
0-200 km/h
0-124 mph
11.0 s
10.6 s
Top speed
318 km/h
198 mph
296 km/h
184 mph
Drag race simulation
60 ft
18 m
1.8 s
1.8 s
330 ft
101 m
4.9 s
4.7 s
1/8 mile
201 m
7.3 s
7.2 s
1000 ft
305 m
9.5 s
9.3 s
1/4 mile
402 m
11.3 s
11.1 s
Trap speed
1/4 mile
402 m
203 km/h
126 mph
204 km/h
127 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 (992)GT3 RS 4.0
525 hp
391 kW

Porsche 911 (992) GT3 RS 4.0 has 25 hp more than Porsche 911 (991 II) GT3 4.0.

The biggest power difference is between Porsche 911 (991 II) GT3 4.0 and Porsche 911 (992) GT3 RS 4.0: 25 hp (19 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 (992)GT3 RS 4.0
465 Nm
343 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
1,430 kg
3,153 lb
Porsche911 (992)GT3 RS 4.0
1,450 kg
3,197 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
318 km/h
198 mph
Porsche911 (992)GT3 RS 4.0
296 km/h
184 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 4.03.4 s
Porsche911 (992)GT3 RS 4.03.2 s

The biggest 0-100 km/h difference is between Porsche 911 (992) GT3 RS 4.0 and Porsche 911 (991 II) GT3 4.0: 0.2 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
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
Porsche911 (992)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
350 hp/t
261 kW/t
2.9 kg/hp
Porsche911 (992)GT3 RS 4.0
362 hp/t
270 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
504 km
313 mi
Porsche911 (992)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
3.4 s
318 km/h
198 mph
Porsche911 (992)GT3 RS 4.0
525 hp
391 kW
3.2 s
296 km/h
184 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/h3.4 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
Porsche911 (992)GT3 RS 4.0
Power
525 hp
391 kW
0-100 km/h3.2 s
Top speed
296 km/h
184 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,572 mm
180.0 in
Height
1,322 mm
52.0 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)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
Porsche911 (992)GT3 RS 4.0
Power
525 hp
391 kW
0-100 km/h3.2 s
Top speed
296 km/h
184 mph
12.7 L/100 km
18.5 mpg US
22.2 mpg UK

Porsche 911 (991 II) GT3 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
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.4 s
Porsche911 (992)GT3 RS 4.0
12.7 L/100 km
18.5 mpg US
22.2 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 (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
Porsche911 (992)GT3 RS 4.0
362 hp/t
270 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 (992)GT3 RS 4.0
Power
500 hp
373 kW
525 hp
391 kW
Torque
460 Nm
339 lb-ft
465 Nm
343 lb-ft
Acceleration
3.4 s
3.2 s
Top speed
318 km/h
198 mph
296 km/h
184 mph
Lightness
1,430 kg
3,153 lb
1,450 kg
3,197 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
4,562 mm
179.6 in
Height
1,271 mm
50.0 in
Doors/seats
2 doors
2 seats
Trunk-
Length
4,572 mm
180.0 in
Height
1,322 mm
52.0 in
Range score
504 km
313 mi
504 km
313 mi
CO2 score
288 g/km
-
Trunk score
125 L
4.4 cu ft
-
Power-to-weight score
350 hp/t
261 kW/t
2.9 kg/hp
362 hp/t
270 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 (992) GT3 RS 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 II) GT3 4.0

  • Is 20 kg lighter
  • Has 22 km/h (14 mph) higher top speed

Pros

  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power

Porsche 911 (992) GT3 RS 4.0

  • Has 25 hp more
  • Has 5 Nm more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 12 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio

Cons

  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) GT3 4.0
Porsche 911 (992) GT3 RS 4.0
Compare selected cars
2 vehicles selected

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Porsche 911 (991 II) GT3 4.0 vs Porsche 911 (992) GT3 RS 4.0 - car comparison - FastVsFaster