Porsche Panamera 4 971 vs Porsche Cayenne Diesel 958.2: which is truly faster?

Off the line, the Panamera 4 hits 100 km/h in 5.45 s versus 7.11 s for the Cayenne Diesel. At this point, the Panamera 4 leads by 1.66 s and sits roughly 11 m ahead.

At 200 metres, the Panamera 4 is doing 132 km/h against 118 km/h for the Cayenne Diesel. The gap is 0.86 s. The challenger starts to claw back ground.

At 400 metres standing start, the Panamera 4 crosses the line in 13.78 s versus 15.22 s. The 1.44 s gap represents roughly 57 m of track - a gap visible to the naked eye.

Past 400 metres, the Panamera 4 continues to build its lead. At 600 metres, it runs at 184 km/h versus 163 km/h. At 1,000 metres, the Panamera 4 finishes in 25.22 s versus 28.17 s, with a 2.95 s lead.

Both rivals are electronically governed, but not at the same level: the Panamera 4 is capped at 257 km/h, the Cayenne Diesel at 217 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 (6.08 kg/hp vs 8.05 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.83 seconds. The 1.66 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.