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Porsche 911 Carrera 4S Cabriolet 991.2 vs Porsche 911 Carrera 991.2: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

sports car · 2017 vs 2017 · Methodology
PorschePetrolFaster

911 Carrera 4S Cabriolet 991.2

426 hp · 499 Nm · 1,560 kg · 2017

VS
PorschePetrol

911 Carrera 991.2

375 hp · 449 Nm · 1,430 kg · 2017

Result · 0–100 km/h

APorsche 911 Carrera 4S Cabriolet 991.2

4.04 s

Gap0.20 sin favour of 911 Carrera 4S Cabriolet
BPorsche 911 Carrera 991.2

4.25 s

Summary · Caralogy simulation
Measure911 Carrera 4S Cabriolet 991.2911 Carrera 991.2Gap
0–100 km/h4.04 s4.25 s0.20 s · 911 Carrera 4S Cabriolet 991.2
400 m standing start11.98 s12.21 s0.23 s · 911 Carrera 4S Cabriolet 991.2
1,000 m standing start21.53 s21.92 s0.39 s · 911 Carrera 4S Cabriolet 991.2
Top speed (electronically limited)303 km/h289 km/h14 km/h · 911 Carrera 4S Cabriolet 991.2
Power-to-weight ratio3.66 kg/hp3.81 kg/hpbetter ratio · 911 Carrera 4S Cabriolet 991.2

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

PorschePetrol911 Carrera 4S Cabriolet 991.2
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrol911 Carrera 991.2
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Best value in bold.
Stage911 Carrera 4S Cabriolet 991.2911 Carrera 991.2
0–30 km/h1.16 s · tight gap1.23 s
0–50 km/h1.94 s · tight gap2.05 s
0–80 km/h3.16 s3.33 s
0–100 km/h4.04 s4.25 s
0–120 km/h5.18 s5.43 s
0–160 km/h8.10 s8.48 s
0–200 km/h12.39 s13.03 s
400 m standing start11.98 s12.21 s
1,000 m standing start21.53 s21.92 s
Top speed303 km/h289 km/h

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Porsche

911 Carrera 4S Cabriolet 991.2

3,66kg/hpratio better by 0,15 kg/hp
CharacteristicValueDetail
Power426 hpB6
Torque499 Nm
Weight1 560 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
Porsche

911 Carrera 991.2

3,81kg/hpcompensated by −130 kg
CharacteristicValueDetail
Power375 hpB6
Torque449 Nm
Weight1 430 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxDUAL_CLUTCH

The start: 0 to 100 km/h

Off the line, the 911 Carrera 4S Cabriolet hits 100 km/h in 4.05 s versus 4.25 s for the 911 Carrera. At this point, the 911 Carrera 4S Cabriolet leads by 0.20 s and sits roughly 3 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 Carrera 4S Cabriolet is doing 158 km/h against 156 km/h for the 911 Carrera. The gap is 0.17 s. The gap remains stable from the start.

At 400 metres standing start, the 911 Carrera 4S Cabriolet crosses the line in 11.98 s versus 12.20 s. The 0.23 s gap represents roughly 12 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 Carrera 4S Cabriolet continues to build its lead. At 600 metres, it runs at 220 km/h versus 217 km/h. At 1,000 metres, the 911 Carrera 4S Cabriolet finishes in 21.53 s versus 21.92 s, with a 0.39 s lead. Both vehicles have similar top speeds (303 vs 289 km/h), preventing any comeback.

What the numbers don’t tell you

The 911 Carrera 4S Cabriolet features all-wheel drive (AWD) against the 911 Carrera’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Both rivals are electronically governed, but not at the same level: the 911 Carrera 4S Cabriolet is capped at 303 km/h, the 911 Carrera at 295 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.66 kg/hp vs 3.81 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.12 seconds. The 0.20 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of 911 Carrera 4S Cabriolet 991.2
BMW Z4 M40iBMW Z4 M40i

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Frequently asked questions

Over 0–100 km/h, 911 Carrera 4S Cabriolet 991.2 wins (4,04 s vs 4,25 s).

911 Carrera 4S Cabriolet 991.2 goes from 0 to 100 km/h in 4,04 seconds (calibrated simulation).

911 Carrera 4S Cabriolet 991.2: 426 hp, ratio 3,66 kg/hp. 911 Carrera 991.2: 375 hp, ratio 3,81 kg/hp.

911 Carrera 4S Cabriolet 991.2: 303 km/h. 911 Carrera 991.2: 289 km/h.