Porsche Cayenne S 958.2 vs Bmw M550d xDrive G30 : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
Simulation de performance
Race simulation at real speed
CONFIDENCE 93%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 93 %.
Cayenne S vs Bmw M550d xDrive: chronicle of a drag race at 251 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw M550d xDrive hits 100 km/h in 4.46 s versus 5.13 s for the Cayenne S. At this point, the Bmw M550d xDrive leads by 0.67 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M550d xDrive is doing 146 km/h against 137 km/h for the Cayenne S. The gap is 0.49 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw M550d xDrive crosses the line in 12.66 s versus 13.45 s. The 0.79 s gap represents roughly 37 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Bmw M550d xDrive continues to build its lead. At 600 metres, it runs at 204 km/h versus 191 km/h. At 1,000 metres, the Bmw M550d xDrive finishes in 22.91 s versus 24.50 s, with a 1.58 s lead. Both vehicles have similar top speeds (251 vs 250 km/h), preventing any comeback.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Cayenne S is capped at 257 km/h, the Bmw M550d xDrive at 250 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 (4.96 kg/hp vs 4.61 kg/hp) and transmission (Unknown vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.11 seconds. The 0.67 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M550d xDrive has a clear edge over the Porsche Cayenne S to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.