Ferrari 296 GTB 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.
400 mSimulation de performance
Race simulation at real speed
CONFIDENCE 94%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 94 %.
296 GTB vs 911 Turbo Cabriolet: chronicle of a drag race at 338 km/h
The launch: 0 to 100 km/h
Off the line, the 296 GTB hits 100 km/h in 2.94 s versus 3.24 s for the 911 Turbo Cabriolet. At this point, the 296 GTB leads by 0.30 s and sits roughly 2 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 296 GTB is doing 184 km/h against 168 km/h for the 911 Turbo Cabriolet. The gap is 0.41 s. The gap remains stable from the start.
At 400 metres standing start, the 296 GTB crosses the line in 10.30 s versus 11.04 s. The 0.74 s gap represents roughly 42 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 296 GTB continues to build its lead. At 600 metres, it runs at 255 km/h versus 233 km/h. At 1,000 metres, the 296 GTB finishes in 18.57 s versus 20.03 s, with a 1.47 s lead.
What the numbers don’t tell you
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 (2.37 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 0.30 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Ferrari 296 GTB is slightly faster than the Porsche 911 Turbo Cabriolet to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.