Car comparison

Porsche 911 (991) GT3 RS 4.0vsPorsche 911 Targa (991) 4 GTS 3.8

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 Targa (991)

4 GTS 3.8

430 hp3800 ccGasolineAWDDual-clutchNaturally aspirated2015-2015

Comparison overview

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

Best choices

Porsche 911 Targa (991) 4 GTS 3.8

  • Lowest combined fuel consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest city consumption
    12.5 L/100 km
    18.8 mpg US
    22.6 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest CO2 emissions
    214 g/km
  • Best estimated range
    739 km
    459 mi
  • Largest trunk
    285 L
  • Best overall score
    71/100
  • Best economy score
    82/100
  • Best practicality score
    51/100

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
  • Best performance score
    89/100

Specification comparison

Specification comparison
ModelPorsche911 (991)GT3 RS 4.0Porsche911 Targa (991)4 GTS 3.8
Power
500hp373kW
430hp321kW
Torque
460Nm339lb-ft
440Nm325lb-ft
Curb weight
1,420kg3,131lb
1,580kg3,483lb
Gross weight
1,720kg3,792lb
1,980kg4,365lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
301 km/h
187 mph
To 99% top speed
47.9s99% target: 317 km/h / 197 mph
Calculated
58.2s99% target: 298 km/h / 185 mph
Calculated
0-100 km/h
3.3s
4.3s
0-200 km/h
9.2s
Calculated
12.5s
Calculated
0-60 mph
3.2s
Calculated
4.1s
Calculated
Fuel consumption
12.7L/100 km18.5mpg US22.2mpg UK
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption city
19.2L/100 km12.3mpg US14.7mpg UK
12.5L/100 km18.8mpg US22.6mpg UK
Fuel consumption highway
8.9L/100 km26.4mpg US31.7mpg UK
7.1L/100 km33.1mpg US39.8mpg UK
Quarter mile
10.9s
Calculated
12.1s
Calculated
Power-to-weight
352hp/t263kW/t160hp/1000 lb
Calculated
272hp/t203kW/t123hp/1000 lb
Calculated
Torque-to-weight
324Nm/t217lb-ft/ton
Calculated
278Nm/t186lb-ft/ton
Calculated
Estimated range
504km313mi
Calculated
739km459mi
Calculated
Displacement
3,996cc244cu in
3,800cc232cu in
Length
4,545mm179in
4,509mm178in
Width
1,880mm74in
1,852mm73in
Height
1,291mm51in
1,291mm51in
Wheelbase
2,457mm97in
2,450mm96in
Front track
1,587mm62in
1,538mm61in
Rear track
1,557mm61in
1,560mm61in
Trunk volume
125L
285L
Max trunk volume
260L
-
Doors
2
2
Seats
2
4
Fuel tank
64L
68L
CO2 emissions
296g/km
214g/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 Targa (991) 4 GTS 3.8PowerTorque
  • Porsche 911 (991) GT3 RS 4.0: Power / Torque
  • Porsche 911 Targa (991) 4 GTS 3.8: 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 Targa (991)4 GTS 3.87,500 rpm5,750 rpm7,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991)GT3 RS 4.0Porsche911 Targa (991)4 GTS 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.2 s
4.1 s
0-100 km/h
0-62 mph
3.3 s
4.3 s
0-200 km/h
0-124 mph
9.2 s
12.5 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
301 km/h
187 mph
Drag race simulation
60 ft
18 m
1.9 s
2.1 s
330 ft
101 m
4.9 s
5.4 s
1/8 mile
201 m
7.2 s
8.1 s
1000 ft
305 m
9.2 s
10.3 s
1/4 mile
402 m
10.9 s
12.1 s
Trap speed
1/4 mile
402 m
218 km/h
136 mph
197 km/h
123 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 Targa (991)4 GTS 3.8
430 hp
321 kW

Porsche 911 (991) GT3 RS 4.0 has 70 hp more than Porsche 911 Targa (991) 4 GTS 3.8.

The biggest power difference is between Porsche 911 Targa (991) 4 GTS 3.8 and Porsche 911 (991) GT3 RS 4.0: 70 hp (52 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 Targa (991)4 GTS 3.8
440 Nm
325 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 Targa (991)4 GTS 3.8
1,580 kg
3,483 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 Targa (991)4 GTS 3.8
301 km/h
187 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 Targa (991)4 GTS 3.84.3 s

The biggest 0-100 km/h difference is between Porsche 911 (991) GT3 RS 4.0 and Porsche 911 Targa (991) 4 GTS 3.8: 1.0 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 Targa (991)4 GTS 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

The biggest fuel consumption difference is between Porsche 911 Targa (991) 4 GTS 3.8 and Porsche 911 (991) GT3 RS 4.0: 3.5 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)GT3 RS 4.0
352 hp/t
263 kW/t
2.8 kg/hp
Porsche911 Targa (991)4 GTS 3.8
272 hp/t
203 kW/t
3.7 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 Targa (991)4 GTS 3.8
739 km
459 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 Targa (991)4 GTS 3.8
430 hp
321 kW
4.3 s
301 km/h
187 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 Targa (991)4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.3 s
Top speed
301 km/h
187 mph
Doors/seats
2 doors
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 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)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 Targa (991)4 GTS 3.8
Power
430 hp
321 kW
0-100 km/h4.3 s
Top speed
301 km/h
187 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Porsche 911 Targa (991) 4 GTS 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)GT3 RS 4.0
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
3.3 s
Porsche911 Targa (991)4 GTS 3.8
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
4.3 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)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 Targa (991)4 GTS 3.8
272 hp/t
203 kW/t
3.7 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991)GT3 RS 4.0Porsche911 Targa (991)4 GTS 3.8
Power
500 hp
373 kW
430 hp
321 kW
Torque
460 Nm
339 lb-ft
440 Nm
325 lb-ft
Acceleration
3.3 s
4.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
301 km/h
187 mph
Lightness
1,420 kg
3,131 lb
1,580 kg
3,483 lb
Fuel consumption
12.7 L/100 km
18.5 mpg US
22.2 mpg UK
9.2 L/100 km
25.6 mpg US
30.7 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
4 seats
Trunk
285 L
10.1 cu ft
Length
4,509 mm
177.5 in
Height
1,291 mm
50.8 in
Range score
504 km
313 mi
739 km
459 mi
CO2 score
296 g/km
214 g/km
Trunk score
125 L
4.4 cu ft
285 L
10.1 cu ft
Power-to-weight score
352 hp/t
263 kW/t
2.8 kg/hp
272 hp/t
203 kW/t
3.7 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 Targa (991) 4 GTS 3.8
Consumption12.7 L/100 km18.5 mpg US22.2 mpg UK9.2 L/100 km25.6 mpg US30.7 mpg UK
Cost / 100 km22.22 LC100 km16.10 LC100 km
Cost / 100 mi35.77 LC100 mi25.91 LC100 mi
Annual fuel used1,905 L503 US gal419 UK gal1,380 L365 US gal304 UK gal
Annual fuel cost3,334 LC/year2,415 LC/year

Head-to-head comparisons

Porsche 911 (991) GT3 RS 4.0

  • Has 70 hp more
  • Has 20 Nm more
  • Is 160 kg lighter
  • Is 1.0 s quicker from 0-100 km/h
  • Has 19 km/h (12 mph) higher top speed
  • Has 80 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

Porsche 911 Targa (991) 4 GTS 3.8

  • Uses 3.5 L/100 km less fuel
  • Has 235 km (146 mi) more estimated range
  • Has 160 L more trunk volume
  • Emits 82 g/km less CO2

Pros

  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991) GT3 RS 4.0
Porsche 911 Targa (991) 4 GTS 3.8
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