Tesla Model X Long Range vs Porsche 911 Carrera Cab 991.1: which is truly faster?

Off the line, the Model X Long Range hits 100 km/h in 4.11 s versus 4.52 s for the 911 Carrera Cab. The instant torque of 660 Nm from the electric motor makes the difference. At this point, the Model X Long Range leads by 0.41 s and sits roughly 2 m ahead.

At 200 metres, the Model X Long Range is doing 160 km/h against 148 km/h for the 911 Carrera Cab. The gap is 0.39 s. The gap remains stable from the start.

At 400 metres standing start, the Model X Long Range crosses the line in 11.92 s versus 12.62 s. The 0.69 s gap represents roughly 35 m of track - a gap visible to the naked eye.

Past 400 metres, the Model X Long Range continues to build its lead. At 600 metres, it runs at 224 km/h versus 208 km/h. At 1,000 metres, the Model X Long Range finishes in 21.31 s versus 22.72 s, with a 1.42 s lead. Despite a higher top speed (289 km/h), the 911 Carrera Cab never recovers its launch deficit.

The Model X Long Range features all-wheel drive (AWD) against the 911 Carrera 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 Model X Long Range is capped at 249 (i.e. 155 mph - industry threshold) km/h, the 911 Carrera Cab at 289 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 6.73 seconds. The 0.41 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.