Alfa Romeo Stelvio Quadrifoglio vs Porsche 911 Carrera 4S 991.2 : 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 96%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 96 %.
Stelvio Quadrifoglio vs 911 Carrera 4S: chronicle of a drag race at 304 km/h
The launch: 0 to 100 km/h
Off the line, the Stelvio Quadrifoglio hits 100 km/h in 3.83 s versus 3.83 s for the 911 Carrera 4S. The 0.00 s gap is negligible: both vehicles are neck and neck.
From 100 km/h to 400 metres
At 200 metres, the 911 Carrera 4S is doing 161 km/h against 156 km/h for the Stelvio Quadrifoglio. The gap is 0.02 s. The gap remains stable from the start.
At 400 metres standing start, the 911 Carrera 4S crosses the line in 11.74 s versus 11.86 s. The 0.13 s gap represents roughly 7 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 911 Carrera 4S continues to build its lead. At 600 metres, it runs at 223 km/h versus 216 km/h. At 1,000 metres, the 911 Carrera 4S finishes in 21.16 s versus 21.59 s, with a 0.43 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Stelvio Quadrifoglio is capped at 283 km/h, the 911 Carrera 4S at 304 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 (3.59 kg/hp vs 3.50 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.66 seconds. The 0.00 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Alfa Romeo Stelvio Quadrifoglio is slightly faster than the Porsche 911 Carrera 4S to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.