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Home›Duel›Porsche 911 vs Porsche Boxster

Performance comparison

Porsche 911 Carrera 4S Cabriolet 991.2 vs Porsche Boxster S 981: 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.

PorschePetrolFaster

911 Carrera 4S Cabriolet 991.2

426 hp · 499 Nm · 1,560 kg · 2017

VS
PorschePetrol

Boxster S 981

314 hp · 361 Nm · 1,355 kg · 2012

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

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.

911 Carrera 4S Cabriolet 991.2Boxster S 981
0–100 km/h4,04 s−1,03 s5,08 s
400 m standing start11,98 s−1,25 s13,23 s
1,000 m standing start21,53 s−2,34 s23,87 s
Top speed (electronically limited)303 km/h+41 km/h262 km/h
Power-to-weight ratio3,66 kg/hpbetter ratio4,32 kg/hp

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
PorschePetrolBoxster S 981
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. Winner in green.

Palier911 Carrera 4S Cabriolet 991.2Boxster S 981
0–30 km/h1,16 s1,43 s
0–50 km/h1,94 s2,38 s
0–80 km/h3,16 s3,91 s
0–100 km/h4,04 s5,08 s
0–120 km/h5,18 s6,61 s
0–160 km/h8,10 s10,72 s
0–200 km/h12,39 s17,41 s
400 m standing start11,98 s13,23 s
1,000 m standing start21,53 s23,87 s
Top speed303 km/h262 km/h

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 0,65 kg/hp
CharacteristicValueDetail
Power426 hpB6
Torque499 Nm
Weight1 560 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
Porsche

Boxster S 981

4,32kg/hpcompensated by −205 kg
CharacteristicValueDetail
Power314 hpEngine block and cylinder heads formed in aluminum
Torque361 Nm
Weight1 355 kgmanufacturer kerb weight
DrivetrainPropulsion
Gearbox6 speed standard

The start: 0 to 100 km/h

Off the line, the 911 Carrera 4S Cabriolet hits 100 km/h in 4.05 s versus 5.08 s for the Boxster S. At this point, the 911 Carrera 4S Cabriolet leads by 1.03 s and sits roughly 11 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 Carrera 4S Cabriolet is doing 158 km/h against 143 km/h for the Boxster S. The gap is 0.84 s. The challenger starts to claw back ground.

At 400 metres standing start, the 911 Carrera 4S Cabriolet crosses the line in 11.98 s versus 13.23 s. The 1.25 s gap represents roughly 60 m of track — a gap visible to the naked eye.

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 198 km/h. At 1,000 metres, the 911 Carrera 4S Cabriolet finishes in 21.53 s versus 23.87 s, with a 2.34 s lead.

What the numbers don’t tell you

The 911 Carrera 4S Cabriolet features all-wheel drive (AWD) against the Boxster S’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 Boxster S at 274 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 4.32 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.45 seconds. The 1.03 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
Porsche 2020 911 Carrera S CabrioletPorsche 911 Turbo CabrioletPorsche 911 Carrera 4 GTS Cabriolet

Frequently asked questions

Sur 0–100 km/h, 911 Carrera 4S Cabriolet 991.2 gagne (4,04 s vs 5,08 s).

911 Carrera 4S Cabriolet 991.2 passe de 0 à 100 km/h en 4,04 secondes (simulation calibrée).

911 Carrera 4S Cabriolet 991.2 : 426 hp, ratio 3,66 kg/hp. Boxster S 981 : 314 hp, ratio 4,32 kg/hp.

911 Carrera 4S Cabriolet 991.2 : 303 km/h. Boxster S 981 : 262 km/h.