Car comparison

Porsche 911 (991 II) GT3 4.0vsPorsche 911 Cabriolet (992) Carrera GTS 3.0

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 Cabriolet (992)

Carrera GTS 3.0

480 hp2981 ccGasolineRWDManualTwin-turboCabriolet / convertible2021-2024

Comparison overview

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

Best choices

Porsche 911 Cabriolet (992) Carrera GTS 3.0

  • Highest torque
    570 Nm
    420 lb-ft
  • Lowest combined fuel consumption
    10.4 L/100 km
    22.6 mpg US
    27.2 mpg UK
  • Lowest city consumption
    15.1 L/100 km
    15.6 mpg US
    18.7 mpg UK
  • Lowest highway consumption
    7.7 L/100 km
    30.5 mpg US
    36.7 mpg UK
  • Best estimated range
    615 km
    382 mi
  • Largest trunk
    163 L
  • Best overall score
    72/100
  • Best economy score
    79/100
  • Best practicality score
    39/100

Porsche 911 (991 II) GT3 4.0

  • Quickest 0-100 km/h
    3.9 s
  • Fastest top speed
    330 km/h
    205 mph Unrestricted
    320 km/h
    199 mph Restricted
  • Most powerful
    500 hp
    373 kW
  • Lightest
    1,413 kg
    3,115 lb
  • Best power-to-weight
    354 hp/t
    264 kW/t
    2.8 kg/hp
  • Best performance score
    87/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)GT3 4.0Porsche911 Cabriolet (992)Carrera GTS 3.0
Power
500hp373kW
480hp358kW
Torque
460Nm339lb-ft
570Nm420lb-ft
Curb weight
1,413kg3,115lb
1,580kg3,483lb
Gross weight
1,760kg3,880lb
2,010kg4,431lb
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Calculated
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 mph
Calculated
To 99% top speed
69.5s99% target: 327 km/h / 203 mph
Calculated
83.2s99% target: 317 km/h / 197 mph
Calculated
0-100 km/h
3.9s
4.3s
0-200 km/h
11.4s
13.4s
0-60 mph
3.7s
Calculated
4.1s
Calculated
Fuel consumption
12.9L/100 km18.2mpg US21.9mpg UK
10.4L/100 km22.6mpg US27.2mpg UK
Fuel consumption city
19.7L/100 km11.9mpg US14.3mpg UK
15.1L/100 km15.6mpg US18.7mpg UK
Fuel consumption highway
8.8L/100 km26.7mpg US32.1mpg UK
7.7L/100 km30.5mpg US36.7mpg UK
Quarter mile
11.7s
Calculated
12.3s
Calculated
Power-to-weight
354hp/t264kW/t161hp/1000 lb
Calculated
304hp/t227kW/t138hp/1000 lb
Calculated
Torque-to-weight
326Nm/t218lb-ft/ton
Calculated
361Nm/t241lb-ft/ton
Calculated
Estimated range
496km308mi
Calculated
615km382mi
Calculated
Displacement
3,996cc244cu in
2,981cc182cu in
Length
4,562mm180in
4,533mm178in
Width
1,852mm73in
1,852mm73in
Height
1,271mm50in
1,302mm51in
Wheelbase
2,457mm97in
2,450mm96in
Front track
1,551mm61in
-
Rear track
1,555mm61in
-
Ground clearance
88mm3in
-
Trunk volume
125L
163L
Doors
2
2
Seats
2
4
Fuel tank
64L
64L
CO2 emissions
290g/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 Cabriolet (992) Carrera GTS 3.0PowerTorque
  • Porsche 911 (991 II) GT3 4.0: Power / Torque
  • Porsche 911 Cabriolet (992) Carrera GTS 3.0: 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 Cabriolet (992)Carrera GTS 3.06,500 rpm2,300-5,000 rpm7,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)GT3 4.0Porsche911 Cabriolet (992)Carrera GTS 3.0
Acceleration checkpoints
0-60 mph
0-97 km/h
3.7 s
4.1 s
0-100 km/h
0-62 mph
3.9 s
4.3 s
0-200 km/h
0-124 mph
11.4 s
13.4 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
309 km/h192 mph
Likely limited
Drag race simulation
60 ft
18 m
2.0 s
2.0 s
330 ft
101 m
5.2 s
5.4 s
1/8 mile
201 m
7.7 s
8.1 s
1000 ft
305 m
9.9 s
10.4 s
1/4 mile
402 m
11.7 s
12.3 s
Trap speed
1/4 mile
402 m
203 km/h
126 mph
191 km/h
119 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 Cabriolet (992)Carrera GTS 3.0
480 hp
358 kW

Porsche 911 (991 II) GT3 4.0 has 20 hp more than Porsche 911 Cabriolet (992) Carrera GTS 3.0.

The biggest power difference is between Porsche 911 Cabriolet (992) Carrera GTS 3.0 and Porsche 911 (991 II) GT3 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 4.0
460 Nm
339 lb-ft
Porsche911 Cabriolet (992)Carrera GTS 3.0
570 Nm
420 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 Cabriolet (992)Carrera GTS 3.0
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 II)GT3 4.0
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Porsche911 Cabriolet (992)Carrera GTS 3.0
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 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 Cabriolet (992)Carrera GTS 3.04.3 s

The biggest 0-100 km/h difference is between Porsche 911 (991 II) GT3 4.0 and Porsche 911 Cabriolet (992) Carrera GTS 3.0: 0.4 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 Cabriolet (992)Carrera GTS 3.0
10.4 L/100 km
22.6 mpg US
27.2 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (992) Carrera GTS 3.0 and Porsche 911 (991 II) GT3 4.0: 2.5 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 II)GT3 4.0
354 hp/t
264 kW/t
2.8 kg/hp
Porsche911 Cabriolet (992)Carrera GTS 3.0
304 hp/t
227 kW/t
3.3 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 Cabriolet (992)Carrera GTS 3.0
615 km
382 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 Cabriolet (992)Carrera GTS 3.0
480 hp
358 kW
4.3 s
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 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 Cabriolet (992)Carrera GTS 3.0
Power
480 hp
358 kW
0-100 km/h4.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 mph
Doors/seats
2 doors
4 seats
Trunk
163 L
5.8 cu ft
Length
4,533 mm
178.5 in
Height
1,302 mm
51.3 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 Cabriolet (992)Carrera GTS 3.0
Power
480 hp
358 kW
0-100 km/h4.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 mph
10.4 L/100 km
22.6 mpg US
27.2 mpg UK

Porsche 911 Cabriolet (992) Carrera GTS 3.0 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 Cabriolet (992)Carrera GTS 3.0
10.4 L/100 km
22.6 mpg US
27.2 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 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 Cabriolet (992)Carrera GTS 3.0
304 hp/t
227 kW/t
3.3 kg/hp
10.4 L/100 km
22.6 mpg US
27.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)GT3 4.0Porsche911 Cabriolet (992)Carrera GTS 3.0
Power
500 hp
373 kW
480 hp
358 kW
Torque
460 Nm
339 lb-ft
570 Nm
420 lb-ft
Acceleration
3.9 s
4.3 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Unrestricted
320 km/h199 mph
Restricted
309 km/h192 mph
Lightness
1,413 kg
3,115 lb
1,580 kg
3,483 lb
Fuel consumption
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
10.4 L/100 km
22.6 mpg US
27.2 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
4 seats
Trunk
163 L
5.8 cu ft
Length
4,533 mm
178.5 in
Height
1,302 mm
51.3 in
Range score
496 km
308 mi
615 km
382 mi
CO2 score
290 g/km
-
Trunk score
125 L
4.4 cu ft
163 L
5.8 cu ft
Power-to-weight score
354 hp/t
264 kW/t
2.8 kg/hp
304 hp/t
227 kW/t
3.3 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 Cabriolet (992) Carrera GTS 3.0
Consumption12.9 L/100 km18.2 mpg US21.9 mpg UK10.4 L/100 km22.6 mpg US27.2 mpg UK
Cost / 100 km22.58 LC100 km18.20 LC100 km
Cost / 100 mi36.33 LC100 mi29.29 LC100 mi
Annual fuel used1,935 L511 US gal426 UK gal1,560 L412 US gal343 UK gal
Annual fuel cost3,386 LC/year2,730 LC/year

Head-to-head comparisons

Porsche 911 (991 II) GT3 4.0

  • Has 20 hp more
  • Is 167 kg lighter
  • Is 0.4 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Has 50 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Smallest trunk

Porsche 911 Cabriolet (992) Carrera GTS 3.0

  • Has 110 Nm more
  • Uses 2.5 L/100 km less fuel
  • Has 119 km (74 mi) more estimated range
  • Has 38 L more trunk volume

Pros

  • Highest torque
  • 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 II) GT3 4.0
Porsche 911 Cabriolet (992) Carrera GTS 3.0
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