BMW iX xDrive50 I20 vs Porsche Cayenne GTS 958.2 : 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 91%Reading the duel
At 400 m, BMW iX xDrive50 leads by 0.18 s. At 1 000 m, Porsche Cayenne GTS takes the lead by 0.01 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 91 %.
iX xDrive50 vs Cayenne GTS: chronicle of a drag race at 262 km/h
The launch: 0 to 100 km/h
Off the line, the iX xDrive50 hits 100 km/h in 4.69 s versus 4.92 s for the Cayenne GTS. The instant torque of 765 Nm from the electric motor makes the difference. The 0.23 s gap is negligible: both vehicles are neck and neck.
From 100 km/h to 400 metres
At 200 metres, the iX xDrive50 is doing 144 km/h against 141 km/h for the Cayenne GTS. The gap is 0.11 s. The challenger starts to claw back ground.
At 400 metres standing start, the iX xDrive50 crosses the line in 12.93 s versus 13.11 s. The 0.18 s gap represents roughly 9 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the situation changes. The iX xDrive50 maxes out at 200 km/h while the Cayenne GTS keeps accelerating towards 262 km/h. At 600 metres, the gap has dropped to 0.27 s.
Around 993 metres, both vehicles are level. This is the inversion point: the Cayenne GTS overcomes its launch deficit thanks to a 62 km/h higher top speed.
At 1,000 metres, the Cayenne GTS finishes in 23.91 s versus 23.92 s. The 0.01 s delta shows an extremely tight race.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the iX xDrive50 is capped at 200 km/h, the Cayenne GTS at 262 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.
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 7.37 seconds. The 0.23 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
BMW iX xDrive50 is slightly faster than the Porsche Cayenne GTS to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.