Ferrari Portofino M vs Porsche 911 Turbo Cabriolet 991.1 : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
Simulation de performance
Race simulation at real speed
CONFIDENCE 97%The 911 Turbo reaches 100 km/h first (3.24 s vs 3.47 s), but the Portofino M is ahead at every metre of the race. Explanation: the Portofino M accelerates harder at low speed and builds a distance gap before either car hits 100 km/h.
Why this result?
The Porsche 911 Turbo Cabriolet is faster at 0-100 km/h, but the Ferrari Portofino M compensates at high speed thanks to higher peak power or top speed. At 400 m, Ferrari Portofino M leads by 0.18 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 97 %.
Portofino M vs 911 Turbo Cabriolet: chronicle of a drag race at 352 km/h
The launch: 0 to 100 km/h
Off the line, the 911 Turbo Cabriolet hits 100 km/h in 3.24 s versus 3.47 s for the Portofino M. At this point, the 911 Turbo Cabriolet leads by 0.24 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 911 Turbo Cabriolet is doing 168 km/h against 178 km/h for the Portofino M. The gap is 0.04 s. The challenger starts to claw back ground.
At 400 metres standing start, the Portofino M crosses the line in 10.86 s versus 11.04 s. The 0.18 s gap represents roughly 11 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Portofino M continues to build its lead. At 600 metres, it runs at 250 km/h versus 233 km/h. At 1,000 metres, the Portofino M finishes in 19.27 s versus 20.03 s, with a 0.77 s lead.
What the numbers don’t tell you
On paper, the Portofino M combines 620 hp, 760 Nm and 1,590 kg — a clear theoretical edge over the 911 Turbo Cabriolet. Yet the 911 Turbo Cabriolet launches quicker. At standstill, both motors deliver peak torque from 0 rpm: the decisive factor is no longer raw power, but available grip. If the 911 Turbo Cabriolet has a better traction coefficient (tyres, weight distribution, traction control calibration), it puts down more force despite inferior specs — exactly what the simulation reflects, calibrated on manufacturer 0-100 km/h times.
Electronically capped at 318 km/h, the 911 Turbo 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 (2.56 kg/hp vs 3.20 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 4.74 seconds. The 0.24 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 911 Turbo Cabriolet is slightly faster than the Ferrari Portofino M to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.