Porsche Panamera S 970.1 vs Bmw 840i xDrive G15 : 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 95%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 95 %.
Panamera S vs Bmw 840i xDrive: chronicle of a drag race at 277 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw 840i xDrive hits 100 km/h in 4.58 s versus 5.16 s for the Panamera S. At this point, the Bmw 840i xDrive leads by 0.58 s and sits roughly 9 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw 840i xDrive is doing 144 km/h against 140 km/h for the Panamera S. The gap is 0.44 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw 840i xDrive crosses the line in 12.80 s versus 13.31 s. The 0.52 s gap represents roughly 25 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Bmw 840i xDrive continues to build its lead. At 600 metres, it runs at 201 km/h versus 197 km/h. At 1,000 metres, the Bmw 840i xDrive finishes in 23.24 s versus 23.98 s, with a 0.74 s lead. Despite a higher top speed (277 km/h), the Panamera S never recovers its launch deficit.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Panamera S is capped at 283 km/h, the Bmw 840i 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 (4.43 kg/hp vs 5.21 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.71 seconds. The 0.58 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw 840i xDrive is slightly faster than the Porsche Panamera S to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.