Car comparison

Porsche 911 (991 II) GT3 RS 4.0vsPorsche 911 (997) · Facelift 2008 Turbo 3.8

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 (997) · Facelift 2008

Turbo 3.8

500 hp3800 ccGasolineAWDManualTurbochargedCoupe2009-2011

Comparison overview

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

Best choices

Porsche 911 (997) Facelift 2008 Turbo 3.8

  • Highest torque
    650 Nm
    479 lb-ft
  • Lowest combined fuel consumption
    11.6 L/100 km
    20.3 mpg US
    24.4 mpg UK
  • Lowest city consumption
    16.5 L/100 km
    14.3 mpg US
    17.1 mpg UK
  • Lowest highway consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Lowest CO2 emissions
    272 g/km
  • Best estimated range
    578 km
    359 mi
  • Best overall score
    78/100
  • Best performance score
    90/100
  • Best economy score
    76/100
  • Best practicality score
    51/100

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
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    364 hp/t
    271 kW/t
    2.8 kg/hp
  • Largest trunk
    125 L

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 RS 4.0Porsche911 (997)Facelift 2008Turbo 3.8
Power
520hp388kW
500hp373kW
Torque
470Nm347lb-ft
650Nm479lb-ft
Curb weight
1,430kg3,153lb
1,570kg3,461lb
Gross weight
1,793kg3,953lb
1,935kg4,266lb
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
Calculated
312 km/h
194 mph
To 99% top speed
45.6s99% target: 322 km/h / 200 mph
Calculated
53.6s99% target: 309 km/h / 192 mph
Calculated
0-100 km/h
3.2s
3.7s
0-200 km/h
8.7s
Calculated
10.6s
Calculated
0-60 mph
3.1s
Calculated
3.5s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
11.6L/100 km20.3mpg US24.4mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
16.5L/100 km14.3mpg US17.1mpg UK
Fuel consumption highway
9L/100 km26.1mpg US31.4mpg UK
8.3L/100 km28.3mpg US34.0mpg UK
Quarter mile
10.7s
Calculated
11.4s
Calculated
Power-to-weight
364hp/t271kW/t165hp/1000 lb
Calculated
318hp/t237kW/t144hp/1000 lb
Calculated
Torque-to-weight
329Nm/t220lb-ft/ton
Calculated
414Nm/t277lb-ft/ton
Calculated
Estimated range
500km311mi
Calculated
578km359mi
Calculated
Displacement
3,996cc244cu in
3,800cc232cu in
Length
4,557mm179in
4,450mm175in
Width
1,880mm74in
1,852mm73in
Height
1,297mm51in
1,300mm51in
Wheelbase
2,453mm97in
2,350mm93in
Front track
1,588mm63in
-
Rear track
1,557mm61in
-
Trunk volume
125L
-
Max trunk volume-
105L
Doors
2
2
Seats
2
4
Fuel tank
64L
67L
CO2 emissions
291g/km
272g/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 (997) Facelift 2008 Turbo 3.8PowerTorque
  • Porsche 911 (991 II) GT3 RS 4.0: Power / Torque
  • Porsche 911 (997) Facelift 2008 Turbo 3.8: 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 (997)Facelift 2008Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)GT3 RS 4.0Porsche911 (997)Facelift 2008Turbo 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.1 s
3.5 s
0-100 km/h
0-62 mph
3.2 s
3.7 s
0-200 km/h
0-124 mph
8.7 s
10.6 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
312 km/h
194 mph
Drag race simulation
60 ft
18 m
1.9 s
2.0 s
330 ft
101 m
4.8 s
5.1 s
1/8 mile
201 m
7.1 s
7.6 s
1000 ft
305 m
9.1 s
9.7 s
1/4 mile
402 m
10.7 s
11.4 s
Trap speed
1/4 mile
402 m
223 km/h
139 mph
208 km/h
129 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 (997)Facelift 2008Turbo 3.8
500 hp
373 kW

Porsche 911 (991 II) GT3 RS 4.0 has 20 hp more than Porsche 911 (997) Facelift 2008 Turbo 3.8.

The biggest power difference is between Porsche 911 (997) Facelift 2008 Turbo 3.8 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 (997)Facelift 2008Turbo 3.8
650 Nm
479 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 (997)Facelift 2008Turbo 3.8
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 (997)Facelift 2008Turbo 3.8
312 km/h
194 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 (997)Facelift 2008Turbo 3.83.7 s

The biggest 0-100 km/h difference is between Porsche 911 (991 II) GT3 RS 4.0 and Porsche 911 (997) Facelift 2008 Turbo 3.8: 0.5 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 (997)Facelift 2008Turbo 3.8
11.6 L/100 km
20.3 mpg US
24.4 mpg UK

The biggest fuel consumption difference is between Porsche 911 (997) Facelift 2008 Turbo 3.8 and Porsche 911 (991 II) GT3 RS 4.0: 1.2 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 (997)Facelift 2008Turbo 3.8
318 hp/t
237 kW/t
3.1 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 (997)Facelift 2008Turbo 3.8
578 km
359 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 (997)Facelift 2008Turbo 3.8
500 hp
373 kW
3.7 s
312 km/h
194 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 (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.7 s
Top speed
312 km/h
194 mph
Doors/seats
2 doors
4 seats
Trunk
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 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 (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.7 s
Top speed
312 km/h
194 mph
11.6 L/100 km
20.3 mpg US
24.4 mpg UK

Porsche 911 (997) Facelift 2008 Turbo 3.8 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 (997)Facelift 2008Turbo 3.8
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
3.7 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 (997)Facelift 2008Turbo 3.8
318 hp/t
237 kW/t
3.1 kg/hp
11.6 L/100 km
20.3 mpg US
24.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)GT3 RS 4.0Porsche911 (997)Facelift 2008Turbo 3.8
Power
520 hp
388 kW
500 hp
373 kW
Torque
470 Nm
347 lb-ft
650 Nm
479 lb-ft
Acceleration
3.2 s
3.7 s
Top speed
Unrestricted
325 km/h202 mph
Restricted
312 km/h194 mph
312 km/h
194 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
11.6 L/100 km
20.3 mpg US
24.4 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
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 in
Range score
500 km
311 mi
578 km
359 mi
CO2 score
291 g/km
272 g/km
Trunk score
125 L
4.4 cu ft
105 L
3.7 cu ft
Power-to-weight score
364 hp/t
271 kW/t
2.8 kg/hp
318 hp/t
237 kW/t
3.1 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 (997) Facelift 2008 Turbo 3.8
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK11.6 L/100 km20.3 mpg US24.4 mpg UK
Cost / 100 km22.40 LC100 km20.30 LC100 km
Cost / 100 mi36.05 LC100 mi32.67 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal1,740 L460 US gal383 UK gal
Annual fuel cost3,360 LC/year3,045 LC/year

Head-to-head comparisons

Porsche 911 (991 II) GT3 RS 4.0

  • Has 20 hp more
  • Is 140 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 13 km/h (8 mph) higher top speed
  • Has 45 hp/t better power-to-weight
  • Has 20 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Highest CO2 emissions

Porsche 911 (997) Facelift 2008 Turbo 3.8

  • Has 180 Nm more
  • Uses 1.2 L/100 km less fuel
  • Has 78 km (48 mi) more estimated range
  • Emits 19 g/km less CO2

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) GT3 RS 4.0
Porsche 911 (997) Turbo 3.8
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