Porsche Cayenne Turbo 958.1 vs Porsche 911 Carrera Cab 991.1: which is truly faster?

Off the line, the Cayenne Turbo hits 100 km/h in 4.46 s versus 4.52 s for the 911 Carrera Cab. The 0.06 s gap is negligible: both vehicles are neck and neck.

At 200 metres, the Cayenne Turbo is doing 149 km/h against 148 km/h for the 911 Carrera Cab. The gap is 0.03 s. The gap remains stable from the start.

At 400 metres standing start, the Cayenne Turbo crosses the line in 12.59 s versus 12.62 s. The 0.02 s gap represents roughly 1 m of track

Past 400 metres, the situation changes. The Cayenne Turbo maxes out at 278 km/h while the 911 Carrera Cab keeps accelerating towards 289 km/h. At 600 metres, the gap has dropped to 0.00 s.

Around 571 metres, both vehicles are level. This is the inversion point: the 911 Carrera Cab overcomes its launch deficit thanks to a 11 km/h higher top speed.

At 1,000 metres, the 911 Carrera Cab finishes in 22.72 s versus 22.79 s. The 0.06 s delta shows an extremely tight race.

Both rivals are electronically governed, but not at the same level: the Cayenne Turbo is capped at 278 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.

With two combustion powertrains, the difference comes down to power-to-weight ratio (4.34 kg/hp vs 4.29 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.73 seconds. The 0.06 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.