Car comparison

Porsche 911 (991 II) GT3 RS 4.0vsPorsche 911 (992) Sport Classic 3.7

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 (992)

Sport Classic 3.7

550 hp3745 ccGasolineRWDManualTwin-turboCoupe2022-2023

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
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    364 hp/t
    271 kW/t
    2.8 kg/hp
  • Lowest combined fuel consumption
    12.8 L/100 km
    18.4 mpg US
    22.1 mpg UK
  • Lowest highway consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Best performance score
    89/100
  • Best economy score
    73/100

Porsche 911 (992) Sport Classic 3.7

  • Most powerful
    550 hp
    410 kW
  • Highest torque
    600 Nm
    443 lb-ft
  • Lowest city consumption
    18.7 L/100 km
    12.6 mpg US
    15.1 mpg UK
  • Best estimated range
    523 km
    325 mi
  • Largest trunk
    132 L
  • Best overall score
    73/100
  • Best practicality score
    41/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 RS 4.0Porsche911 (992)Sport Classic 3.7
Power
520hp388kW
550hp410kW
Torque
470Nm347lb-ft
600Nm443lb-ft
Curb weight
1,430kg3,153lb
1,570kg3,461lb
Gross weight
1,793kg3,953lb
1,995kg4,398lb
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Calculated
315 km/h
196 mph
To 99% top speed
45.6s99% target: 322 km/h / 200 mph
Calculated
64.5s99% target: 312 km/h / 194 mph
Calculated
0-100 km/h
3.2s
4.1s
0-200 km/h
8.7s
Calculated
12.0s
0-60 mph
3.1s
Calculated
3.9s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
12.8L/100 km18.4mpg US22.1mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
18.7L/100 km12.6mpg US15.1mpg UK
Fuel consumption highway
9L/100 km26.1mpg US31.4mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Quarter mile
10.7s
Calculated
11.9s
Calculated
Power-to-weight
364hp/t271kW/t165hp/1000 lb
Calculated
350hp/t261kW/t159hp/1000 lb
Calculated
Torque-to-weight
329Nm/t220lb-ft/ton
Calculated
382Nm/t256lb-ft/ton
Calculated
Estimated range
500km311mi
Calculated
523km325mi
Calculated
Displacement
3,996cc244cu in
3,745cc229cu in
Length
4,557mm179in
4,535mm179in
Width
1,880mm74in
1,900mm75in
Height
1,297mm51in
1,299mm51in
Wheelbase
2,453mm97in
2,450mm96in
Front track
1,588mm63in
1,577mm62in
Rear track
1,557mm61in
1,594mm63in
Ground clearance-
115mm5in
Trunk volume
125L
132L
Doors
2
2
Seats
2
4
Fuel tank
64L
67L
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 (991 II) GT3 RS 4.0Porsche 911 (992) Sport Classic 3.7PowerTorque
  • Porsche 911 (991 II) GT3 RS 4.0: Power / Torque
  • Porsche 911 (992) Sport Classic 3.7: 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 (992)Sport Classic 3.76,750 rpm2,000-6,000 rpm7,200 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)GT3 RS 4.0Porsche911 (992)Sport Classic 3.7
Acceleration checkpoints
0-60 mph
0-97 km/h
3.1 s
3.9 s
0-100 km/h
0-62 mph
3.2 s
4.1 s
0-200 km/h
0-124 mph
8.7 s
12.0 s
0-200 mph
0-322 km/h
46.0 s
-
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Likely limited
315 km/h
196 mph
Drag race simulation
60 ft
18 m
1.9 s
2.1 s
330 ft
101 m
4.8 s
5.3 s
1/8 mile
201 m
7.1 s
7.9 s
1000 ft
305 m
9.1 s
10.1 s
1/4 mile
402 m
10.7 s
11.9 s
Trap speed
1/4 mile
402 m
223 km/h
139 mph
199 km/h
124 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 (992)Sport Classic 3.7
550 hp
410 kW

Porsche 911 (992) Sport Classic 3.7 has 30 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) Sport Classic 3.7: 30 hp (22 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 (992)Sport Classic 3.7
600 Nm
443 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 (992)Sport Classic 3.7
1,570 kg
3,461 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 (992)Sport Classic 3.7
315 km/h
196 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 (992)Sport Classic 3.74.1 s

Although Porsche 911 (992) Sport Classic 3.7 has more power, Porsche 911 (991 II) GT3 RS 4.0 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 (991 II) GT3 RS 4.0 and Porsche 911 (992) Sport Classic 3.7: 0.9 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 (992)Sport Classic 3.7
12.8 L/100 km
18.4 mpg US
22.1 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 RS 4.0
364 hp/t
271 kW/t
2.7 kg/hp
Porsche911 (992)Sport Classic 3.7
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 II)GT3 RS 4.0
500 km
311 mi
Porsche911 (992)Sport Classic 3.7
523 km
325 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 (992)Sport Classic 3.7
550 hp
410 kW
4.1 s
315 km/h
196 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 (992)Sport Classic 3.7
Power
550 hp
410 kW
0-100 km/h4.1 s
Top speed
315 km/h
196 mph
Doors/seats
2 doors
4 seats
Trunk
132 L
4.7 cu ft
Length
4,535 mm
178.5 in
Height
1,299 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 (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 (992)Sport Classic 3.7
Power
550 hp
410 kW
0-100 km/h4.1 s
Top speed
315 km/h
196 mph
12.8 L/100 km
18.4 mpg US
22.1 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 (992)Sport Classic 3.7
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
4.1 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 (992)Sport Classic 3.7
350 hp/t
261 kW/t
2.9 kg/hp
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)GT3 RS 4.0Porsche911 (992)Sport Classic 3.7
Power
520 hp
388 kW
550 hp
410 kW
Torque
470 Nm
347 lb-ft
600 Nm
443 lb-ft
Acceleration
3.2 s
4.1 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
315 km/h
196 mph
Lightness
1,430 kg
3,153 lb
1,570 kg
3,461 lb
Fuel consumption
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
12.8 L/100 km
18.4 mpg US
22.1 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
4 seats
Trunk
132 L
4.7 cu ft
Length
4,535 mm
178.5 in
Height
1,299 mm
51.1 in
Range score
500 km
311 mi
523 km
325 mi
CO2 score
291 g/km
-
Trunk score
125 L
4.4 cu ft
132 L
4.7 cu ft
Power-to-weight score
364 hp/t
271 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 II) GT3 RS 4.0Porsche 911 (992) Sport Classic 3.7
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK12.8 L/100 km18.4 mpg US22.1 mpg UK
Cost / 100 km22.40 LC100 km22.40 LC100 km
Cost / 100 mi36.05 LC100 mi36.05 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal1,920 L507 US gal422 UK gal
Annual fuel cost3,360 LC/year3,360 LC/year

Head-to-head comparisons

Porsche 911 (991 II) GT3 RS 4.0

  • Is 140 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Has 13 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Smallest trunk

Porsche 911 (992) Sport Classic 3.7

  • Has 30 hp more
  • Has 130 Nm more
  • Has 23 km (15 mi) more estimated range
  • Has 7 L more trunk volume

Pros

  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) GT3 RS 4.0
Porsche 911 (992) Sport Classic 3.7
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Porsche 911 (991 II) GT3 RS 4.0 vs Porsche 911 (992) Sport Classic 3.7 - car comparison - FastVsFaster