Porsche Boxster Spyder 981 vs Porsche 718 Cayman: which is truly faster?

Off the line, the 718 Cayman hits 100 km/h in 4.56 s versus 4.59 s for the Boxster Spyder. The 0.03 s gap is negligible: both vehicles are neck and neck.

At 200 metres, the Boxster Spyder is doing 154 km/h against 149 km/h for the 718 Cayman. The gap is 0.07 s. The gap remains stable from the start.

At 400 metres standing start, the Boxster Spyder crosses the line in 12.41 s versus 12.65 s. The 0.25 s gap represents roughly 12 m of track - two to three car lengths.

Past 400 metres, the Boxster Spyder continues to build its lead. At 600 metres, it runs at 216 km/h versus 206 km/h. At 1,000 metres, the Boxster Spyder finishes in 22.15 s versus 22.89 s, with a 0.73 s lead. Both vehicles have similar top speeds (288 vs 274 km/h), preventing any comeback.

On paper, the Boxster Spyder combines 375 hp, 420 Nm and 1,315 kg - a clear theoretical edge over the 718 Cayman. Yet the 718 Cayman launches quicker. At standstill, both motors deliver peak torque from 0 rpm: the decisive factor is no longer raw power, but available grip. If the 718 Cayman has a better traction coefficient (tyres, weight distribution, traction control calibration), it puts down more force despite inferior specs - exactly what the simulation reflects, calibrated on manufacturer 0-100 km/h times.

Electronically capped at 274 km/h, the 718 Cayman 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 (3.51 kg/hp vs 4.45 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.70 seconds. The 0.03 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.