Porsche Cayenne S (8-speed Tiptronic S) 958.1 vs Porsche 911 Carrera Cab 991.1: which is truly faster?

Off the line, the 911 Carrera Cab hits 100 km/h in 4.52 s versus 5.81 s for the Cayenne S (8-speed Tiptronic S). At this point, the 911 Carrera Cab leads by 1.30 s and sits roughly 10 m ahead.

At 200 metres, the 911 Carrera Cab is doing 148 km/h against 133 km/h for the Cayenne S (8-speed Tiptronic S). The gap is 0.85 s. The challenger starts to claw back ground.

At 400 metres standing start, the 911 Carrera Cab crosses the line in 12.62 s versus 13.99 s. The 1.37 s gap represents roughly 61 m of track — a gap visible to the naked eye.

Past 400 metres, the 911 Carrera Cab continues to build its lead. At 600 metres, it runs at 208 km/h versus 186 km/h. At 1,000 metres, the 911 Carrera Cab finishes in 22.72 s versus 25.30 s, with a 2.58 s lead.

Both rivals are electronically governed, but not at the same level: the Cayenne S (8-speed Tiptronic S) is capped at 258 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 (5.16 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 8.88 seconds. The 1.30 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.