Ferrari Portofino vs Alfa Romeo Giulia Quadrifoglio : 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 93%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 93 %.
Portofino vs Giulia Quadrifoglio: chronicle of a drag race at 348 km/h
The launch: 0 to 100 km/h
Off the line, the Portofino hits 100 km/h in 3.55 s versus 3.94 s for the Giulia Quadrifoglio. At this point, the Portofino leads by 0.39 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Portofino is doing 177 km/h against 164 km/h for the Giulia Quadrifoglio. The gap is 0.50 s. The gap remains stable from the start.
At 400 metres standing start, the Portofino crosses the line in 10.92 s versus 11.74 s. The 0.82 s gap represents roughly 45 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Portofino continues to build its lead. At 600 metres, it runs at 249 km/h versus 228 km/h. At 1,000 metres, the Portofino finishes in 19.36 s versus 20.93 s, with a 1.57 s lead.
What the numbers don’t tell you
Electronically capped at 307 km/h, the Giulia Quadrifoglio 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 (2.58 kg/hp vs 3.10 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.51 seconds. The 0.39 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Ferrari Portofino is slightly faster than the Alfa Romeo Giulia Quadrifoglio to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.