Car comparison

Porsche 911 (991 II) Turbo S 3.8vsPorsche 911 Cabriolet (992) Turbo 3.8

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

Porsche 911 (991 II)

Turbo S 3.8

580 hp3800 ccGasolineAWDDual-clutchTwin-turboCoupe2015-2018
VS

Porsche 911 Cabriolet (992)

Turbo 3.8

580 hp3745 ccGasolineAWDDual-clutchTwin-turboCabriolet / convertible2020-2024

Comparison overview

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

Best choices

Porsche 911 (991 II) Turbo S 3.8

  • Quickest 0-100 km/h
    2.9 s
  • Fastest top speed
    330 km/h
    205 mph
  • Most powerful
    580 hp
    433 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Lightest
    1,600 kg
    3,527 lb
  • Best power-to-weight
    363 hp/t
    270 kW/t
    2.8 kg/hp
  • Lowest combined fuel consumption
    9.1 L/100 km
    25.8 mpg US
    31.0 mpg UK
  • Lowest city consumption
    11.8 L/100 km
    19.9 mpg US
    23.9 mpg UK
  • Lowest highway consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Best estimated range
    747 km
    464 mi
  • Best overall score
    77/100
  • Best performance score
    95/100
  • Best economy score
    82/100
  • Best practicality score
    40/100

Specification comparison

Specification comparison
ModelPorsche911 (991 II)Turbo S 3.8Porsche911 Cabriolet (992)Turbo 3.8
Power
580hp433kW
580hp433kW
Torque
750Nm553lb-ft
750Nm553lb-ft
Curb weight
1,600kg3,527lb
1,710kg3,770lb
Gross weight
1,990kg4,387lb
2,100kg4,630lb
Top speed
330 km/h
205 mph
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Calculated
To 99% top speed
42.8s99% target: 327 km/h / 203 mph
Calculated
82.8s99% target: 327 km/h / 203 mph
Calculated
0-100 km/h
2.9s
2.9s
0-200 km/h
7.9s
Calculated
10.1s
0-60 mph
2.8s
Calculated
2.7s
Calculated
Fuel consumption
9.1L/100 km25.8mpg US31.0mpg UK
11.3L/100 km20.8mpg US25.0mpg UK
Fuel consumption city
11.8L/100 km19.9mpg US23.9mpg UK
15.2L/100 km15.5mpg US18.6mpg UK
Fuel consumption highway
7.5L/100 km31.4mpg US37.7mpg UK
8.9L/100 km26.4mpg US31.7mpg UK
Quarter mile
10.3s
Calculated
10.8s
Calculated
Power-to-weight
363hp/t270kW/t164hp/1000 lb
Calculated
339hp/t253kW/t154hp/1000 lb
Calculated
Torque-to-weight
469Nm/t314lb-ft/ton
Calculated
439Nm/t293lb-ft/ton
Calculated
Estimated range
747km464mi
Calculated
593km368mi
Calculated
Displacement
3,800cc232cu in
3,745cc229cu in
Length
4,507mm177in
4,535mm179in
Width
1,880mm74in
1,900mm75in
Height
1,297mm51in
1,302mm51in
Wheelbase
2,450mm96in
2,450mm96in
Front track
1,541mm61in
1,583mm62in
Rear track
1,590mm63in
1,600mm63in
Trunk volume
115L
163L
Max trunk volume
260L
-
Doors
2
2
Seats
4
4
Fuel tank
68L
67L
CO2 emissions
212g/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) Turbo S 3.8Porsche 911 Cabriolet (992) Turbo 3.8PowerTorque
  • Porsche 911 (991 II) Turbo S 3.8: Power / Torque
  • Porsche 911 Cabriolet (992) Turbo 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (991 II)Turbo S 3.86,750 rpm2,250-4,000 rpm7,000 rpm
Porsche911 Cabriolet (992)Turbo 3.86,500 rpm2,250-4,500 rpm7,200 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (991 II)Turbo S 3.8Porsche911 Cabriolet (992)Turbo 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
2.8 s
2.7 s
0-100 km/h
0-62 mph
2.9 s
2.9 s
0-200 km/h
0-124 mph
7.9 s
10.1 s
0-200 mph
0-322 km/h
34.0 s
62.1 s
Top speed
330 km/h
205 mph
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Likely limited
Drag race simulation
60 ft
18 m
1.8 s
1.6 s
330 ft
101 m
4.6 s
4.5 s
1/8 mile
201 m
6.8 s
6.9 s
1000 ft
305 m
8.7 s
9.0 s
1/4 mile
402 m
10.3 s
10.8 s
Trap speed
1/4 mile
402 m
230 km/h
143 mph
206 km/h
128 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
Porsche911 (991 II)Turbo S 3.8
580 hp
433 kW
Porsche911 Cabriolet (992)Turbo 3.8
580 hp
433 kW

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
Porsche911 (991 II)Turbo S 3.8
750 Nm
553 lb-ft
Porsche911 Cabriolet (992)Turbo 3.8
750 Nm
553 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
Porsche911 (991 II)Turbo S 3.8
1,600 kg
3,527 lb
Porsche911 Cabriolet (992)Turbo 3.8
1,710 kg
3,770 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)Turbo S 3.8
330 km/h
205 mph
Porsche911 Cabriolet (992)Turbo 3.8
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 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)Turbo S 3.82.9 s
Porsche911 Cabriolet (992)Turbo 3.82.9 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)Turbo S 3.8
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Porsche911 Cabriolet (992)Turbo 3.8
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

The biggest fuel consumption difference is between Porsche 911 (991 II) Turbo S 3.8 and Porsche 911 Cabriolet (992) Turbo 3.8: 2.2 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)Turbo S 3.8
363 hp/t
270 kW/t
2.8 kg/hp
Porsche911 Cabriolet (992)Turbo 3.8
339 hp/t
253 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)Turbo S 3.8
747 km
464 mi
Porsche911 Cabriolet (992)Turbo 3.8
593 km
368 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (991 II)Turbo S 3.8
580 hp
433 kW
2.9 s
330 km/h
205 mph
Porsche911 Cabriolet (992)Turbo 3.8
580 hp
433 kW
2.9 s
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 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)Turbo S 3.8
Power
580 hp
433 kW
0-100 km/h2.9 s
Top speed
330 km/h
205 mph
Doors/seats
2 doors
4 seats
Trunk
115 L
4.1 cu ft
Length
4,507 mm
177.4 in
Height
1,297 mm
51.1 in
Porsche911 Cabriolet (992)Turbo 3.8
Power
580 hp
433 kW
0-100 km/h2.9 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Doors/seats
2 doors
4 seats
Trunk
163 L
5.8 cu ft
Length
4,535 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)Turbo S 3.8
Power
580 hp
433 kW
0-100 km/h2.9 s
Top speed
330 km/h
205 mph
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Porsche911 Cabriolet (992)Turbo 3.8
Power
580 hp
433 kW
0-100 km/h2.9 s
Top speed
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

Porsche 911 (991 II) Turbo S 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)Turbo S 3.8
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
2.9 s
Porsche911 Cabriolet (992)Turbo 3.8
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
2.9 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)Turbo S 3.8
363 hp/t
270 kW/t
2.8 kg/hp
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Porsche911 Cabriolet (992)Turbo 3.8
339 hp/t
253 kW/t
2.9 kg/hp
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (991 II)Turbo S 3.8Porsche911 Cabriolet (992)Turbo 3.8
Power
580 hp
433 kW
580 hp
433 kW
Torque
750 Nm
553 lb-ft
750 Nm
553 lb-ft
Acceleration
2.9 s
2.9 s
Top speed
330 km/h
205 mph
Unrestricted
330 km/h205 mph
Restricted
320 km/h199 mph
Lightness
1,600 kg
3,527 lb
1,710 kg
3,770 lb
Fuel consumption
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
115 L
4.1 cu ft
Length
4,507 mm
177.4 in
Height
1,297 mm
51.1 in
Doors/seats
2 doors
4 seats
Trunk
163 L
5.8 cu ft
Length
4,535 mm
178.5 in
Height
1,302 mm
51.3 in
Range score
747 km
464 mi
593 km
368 mi
CO2 score
212 g/km
-
Trunk score
115 L
4.1 cu ft
163 L
5.8 cu ft
Power-to-weight score
363 hp/t
270 kW/t
2.8 kg/hp
339 hp/t
253 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) Turbo S 3.8Porsche 911 Cabriolet (992) Turbo 3.8
Consumption9.1 L/100 km25.8 mpg US31 mpg UK11.3 L/100 km20.8 mpg US25 mpg UK
Cost / 100 km15.92 LC100 km19.78 LC100 km
Cost / 100 mi25.63 LC100 mi31.82 LC100 mi
Annual fuel used1,365 L361 US gal300 UK gal1,695 L448 US gal373 UK gal
Annual fuel cost2,389 LC/year2,966 LC/year

Head-to-head comparisons

Porsche 911 (991 II) Turbo S 3.8

  • Is 110 kg lighter
  • Uses 2.2 L/100 km less fuel
  • Has 23 hp/t better power-to-weight
  • Has 154 km (96 mi) more estimated range

Pros

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

Cons

  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (991 II) Turbo S 3.8
Porsche 911 Cabriolet (992) Turbo 3.8
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2 vehicles selected

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