BYD Seal 390 AWD vs Porsche 718 Cayman GT4 RS : 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 %.
Seal 390 AWD vs 718 Cayman GT4 RS: chronicle of a drag race at 321 km/h
The launch: 0 to 100 km/h
Off the line, the 718 Cayman GT4 RS hits 100 km/h in 3.35 s versus 3.77 s for the Seal 390 AWD. Despite lacking instant torque, 500 hp of power compensates. At this point, the 718 Cayman GT4 RS leads by 0.42 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 718 Cayman GT4 RS is doing 170 km/h against 155 km/h for the Seal 390 AWD. The gap is 0.47 s. The gap remains stable from the start.
At 400 metres standing start, the 718 Cayman GT4 RS crosses the line in 11.05 s versus 11.93 s. The 0.88 s gap represents roughly 44 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 718 Cayman GT4 RS continues to build its lead. At 600 metres, it runs at 237 km/h versus 180 km/h. At 1,000 metres, the 718 Cayman GT4 RS finishes in 19.94 s versus 23.93 s, with a 3.99 s lead.
What the numbers don’t tell you
Electronically capped at 180 km/h, the Seal 390 AWD 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.
Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.59 seconds. The 0.42 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 718 Cayman GT4 RS is slightly faster than the BYD Seal 390 AWD to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.