Porsche Cayenne (8-speed Tiptronic S) 958.1 vs Audi Q8 SUV: which is truly faster?

Off the line, the Q8 SUV hits 100 km/h in 6.93 s versus 7.55 s for the Cayenne (8-speed Tiptronic S). At this point, the Q8 SUV leads by 0.62 s and sits roughly 13 m ahead.

At 200 metres, the Q8 SUV is doing 119 km/h against 119 km/h for the Cayenne (8-speed Tiptronic S). The gap is 0.50 s. The challenger starts to claw back ground.

At 400 metres standing start, the Q8 SUV crosses the line in 15.03 s versus 15.50 s. The 0.47 s gap represents roughly 19 m of track - two to three car lengths.

Past 400 metres, the gap narrows.

At 1,000 metres, the Q8 SUV finishes in 27.77 s versus 28.16 s, with just 0.39 s to spare. The Cayenne (8-speed Tiptronic S) fails to fully close the launch gap.

Both rivals are electronically governed, but not at the same level: the Cayenne (8-speed Tiptronic S) is capped at 230 km/h, the Q8 SUV at 226 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 (6.68 kg/hp vs 9.35 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.88 seconds. The 0.62 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.