Porsche Cayenne Turbo Coupe vs Porsche 911 GT3 RS 991.2: which is truly faster?

Off the line, the 911 GT3 RS hits 100 km/h in 3.26 s versus 3.84 s for the Cayenne Turbo Coupe. At this point, the 911 GT3 RS leads by 0.58 s and sits roughly 2 m ahead.

At 200 metres, the 911 GT3 RS is doing 169 km/h against 150 km/h for the Cayenne Turbo Coupe. The gap is 0.54 s. The gap remains stable from the start.

At 400 metres standing start, the 911 GT3 RS crosses the line in 11.02 s versus 12.07 s. The 1.05 s gap represents roughly 53 m of track - a gap visible to the naked eye.

Past 400 metres, the 911 GT3 RS continues to build its lead. At 600 metres, it runs at 235 km/h versus 206 km/h. At 1,000 metres, the 911 GT3 RS finishes in 19.95 s versus 22.22 s, with a 2.28 s lead.

The Cayenne Turbo Coupe features all-wheel drive (AWD) against the 911 GT3 RS’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Electronically capped at 285 km/h, the Cayenne Turbo Coupe never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (4.38 kg/hp vs 2.80 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.03 seconds. The 0.58 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.