Xpeng X9 vs Porsche 911 Carrera S Cab 991.1: which is truly faster?

Off the line, the X9 hits 100 km/h in 3.88 s versus 4.34 s for the 911 Carrera S Cab. The instant torque of 717 Nm from the electric motor makes the difference. At this point, the X9 leads by 0.46 s and sits roughly 3 m ahead.

At 200 metres, the X9 is doing 173 km/h against 152 km/h for the 911 Carrera S Cab. The gap is 0.58 s. The gap remains stable from the start.

At 400 metres standing start, the X9 crosses the line in 11.34 s versus 12.34 s. The 1.00 s gap represents roughly 52 m of track — a gap visible to the naked eye.

Past 400 metres, the situation changes. The X9 maxes out at 200 km/h while the 911 Carrera S Cab keeps accelerating towards 299 km/h. At 600 metres, the gap has dropped to 0.94 s.

Around 993 metres, both vehicles are level. This is the inversion point: the 911 Carrera S Cab overcomes its launch deficit thanks to a 99 km/h higher top speed.

At 1,000 metres, the 911 Carrera S Cab finishes in 22.11 s versus 22.13 s. The 0.02 s delta shows an extremely tight race.

The X9 features all-wheel drive (AWD) against the 911 Carrera S Cab’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Both rivals are electronically governed, but not at the same level: the X9 is capped at 200 km/h, the 911 Carrera S Cab at 302 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 6.36 seconds. The 0.46 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.