Porsche Cayenne Turbo S E-Hybrid Coupe E3.1 vs Tesla Model X Long Range: which is truly faster?

Off the line, the Cayenne Turbo S E-Hybrid Coupe hits 100 km/h in 3.73 s versus 4.11 s for the Model X Long Range. At this point, the Cayenne Turbo S E-Hybrid Coupe leads by 0.38 s and sits roughly 7 m ahead.

At 200 metres, the Cayenne Turbo S E-Hybrid Coupe is doing 157 km/h against 160 km/h for the Model X Long Range. The gap is 0.23 s. The challenger starts to claw back ground.

At 400 metres standing start, the Cayenne Turbo S E-Hybrid Coupe crosses the line in 11.78 s versus 11.92 s. The 0.14 s gap represents roughly 8 m of track — barely a car length.

Past 400 metres, the situation changes. The Model X Long Range maxes out at 250 (i.e. 155 mph — industry threshold) km/h while the Cayenne Turbo S E-Hybrid Coupe keeps accelerating towards 295 km/h. At 600 metres, the gap has dropped to 0.05 s.

Around 692 metres, both vehicles are level. This is the inversion point: the Model X Long Range overcomes its launch deficit thanks to a 45 km/h higher top speed.

At 1,000 metres, the Model X Long Range finishes in 21.31 s versus 21.44 s. The 0.14 s delta shows an extremely tight race.

Both rivals are electronically governed, but not at the same level: the Cayenne Turbo S E-Hybrid Coupe is capped at 295 km/h, the Model X Long Range at 249 (i.e. 155 mph — industry threshold) 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.

With two plug-in hybrid powertrains, the difference comes down to power-to-weight ratio (3.78 kg/hp vs 3.51 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.65 seconds. The 0.38 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.