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Porsche 911 Turbo S Cabriolet 991.2 vs Porsche 911 R 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 2016 · Methodology
PorschePetrolFaster

911 Turbo S Cabriolet 991.2

588 hp · 700 Nm · 1,670 kg · 2017

VS
PorschePetrol

911 R 991.2

500 hp · 460 Nm · 1,370 kg · 2016

Result · 0–100 km/h

APorsche 911 Turbo S Cabriolet 991.2

2.95 s

Gap0.83 sin favour of 911 Turbo S Cabriolet
BPorsche 911 R 991.2

3.78 s

Summary · Caralogy simulation
Measure911 Turbo S Cabriolet 991.2911 R 991.2Gap
0–100 km/h2.95 s3.78 s0.83 s · 911 Turbo S Cabriolet 991.2
400 m standing start10.56 s11.38 s0.82 s · 911 Turbo S Cabriolet 991.2
1,000 m standing start19.13 s20.20 s1.07 s · 911 Turbo S Cabriolet 991.2
Top speed (electronically limited)329 km/h325 km/h4 km/h · 911 Turbo S Cabriolet 991.2
Power-to-weight ratio2.84 kg/hp2.74 kg/hpbetter ratio · 911 R 991.2

Watch the race

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

PorschePetrol911 Turbo S Cabriolet 991.2
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrol911 R 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 Turbo S Cabriolet 991.2911 R 991.2
0–30 km/h0.86 s1.05 s
0–50 km/h1.44 s1.75 s
0–80 km/h2.32 s3.05 s
0–100 km/h2.95 s3.78 s
0–120 km/h3.76 s4.80 s
0–160 km/h5.83 s6.94 s
0–200 km/h8.76 s10.17 s
400 m standing start10.56 s11.38 s
1,000 m standing start19.13 s20.20 s
Top speed329 km/h325 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 Turbo S Cabriolet 991.2

2,84kg/hpcompensated by −300 kg
CharacteristicValueDetail
Power588 hpB6
Torque700 Nm
Weight1 670 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
Porsche

911 R 991.2

2,74kg/hpratio better by 0,10 kg/hp
CharacteristicValueDetail
Power500 hpB6
Torque460 Nm
Weight1 370 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxMANUAL

The start: 0 to 100 km/h

Off the line, the 911 Turbo S Cabriolet hits 100 km/h in 2.95 s versus 3.78 s for the 911 R. At this point, the 911 Turbo S Cabriolet leads by 0.83 s and sits roughly 8 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 Turbo S Cabriolet is doing 176 km/h against 166 km/h for the 911 R. The gap is 0.66 s. The challenger starts to claw back ground.

At 400 metres standing start, the 911 Turbo S Cabriolet crosses the line in 10.56 s versus 11.38 s. The 0.82 s gap represents roughly 47 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 Turbo S Cabriolet continues to build its lead. At 600 metres, it runs at 246 km/h versus 239 km/h. At 1,000 metres, the 911 Turbo S Cabriolet finishes in 19.13 s versus 20.19 s, with a 1.06 s lead. Both vehicles have similar top speeds (329 (i.e. 205 mph - industry threshold) vs 325 km/h), preventing any comeback.

What the numbers don’t tell you

The 911 Turbo S Cabriolet features all-wheel drive (AWD) against the 911 R’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.

Electronically capped at 330 (i.e. 205 mph - industry threshold) km/h, the 911 Turbo S Cabriolet never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (2.84 kg/hp vs 2.74 kg/hp) and transmission (Automatic vs Manual).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.33 seconds. The 0.83 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, 911 Turbo S Cabriolet 991.2 wins (2,95 s vs 3,78 s).

911 Turbo S Cabriolet 991.2 goes from 0 to 100 km/h in 2,95 seconds (calibrated simulation).

911 Turbo S Cabriolet 991.2: 588 hp, ratio 2,84 kg/hp. 911 R 991.2: 500 hp, ratio 2,74 kg/hp.

911 Turbo S Cabriolet 991.2: 329 km/h. 911 R 991.2: 325 km/h.