Porsche Cayenne S Coupe E3.1 vs Bmw X4 M40i G02 : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
0-100Simulation de performance
Race simulation at real speed
CONFIDENCE 96%Why this result?
The Bmw X4 M40i is faster at 0-100 km/h, but the Porsche Cayenne S Coupe compensates at high speed thanks to higher peak power or top speed. At 400 m, Porsche Cayenne S Coupe leads by 0.06 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 96 %.
Cayenne S Coupe vs Bmw X4 M40i: chronicle of a drag race at 262 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw X4 M40i hits 100 km/h in 4.76 s versus 4.76 s for the Cayenne S Coupe. The 0.00 s gap is negligible: both vehicles are neck and neck.
From 100 km/h to 400 metres
At 200 metres, the Cayenne S Coupe is doing 143 km/h against 143 km/h for the Bmw X4 M40i. The gap is 0.05 s. The gap remains stable from the start.
At 400 metres standing start, the Cayenne S Coupe crosses the line in 12.94 s versus 12.99 s. The 0.06 s gap represents roughly 3 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Cayenne S Coupe continues to build its lead. At 600 metres, it runs at 198 km/h versus 198 km/h. At 1,000 metres, the Cayenne S Coupe finishes in 23.58 s versus 23.60 s, with a 0.02 s lead. Both vehicles have similar top speeds (262 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 Coupe is capped at 262 km/h, the Bmw X4 M40i 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 (5.10 kg/hp vs 5.16 kg/hp) and transmission (Unknown vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.22 seconds. The 0.00 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche Cayenne S Coupe and Bmw X4 M40i are virtually tied to 100 km/h. The gap is under a tenth of a second — only the physics engine can settle it step by step.