Porsche Panamera S 970.1 vs Bmw M240i xDrive Convertible : 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 91%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 91 %.
Panamera S vs Bmw M240i xDrive Convertible: chronicle of a drag race at 276 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw M240i xDrive Convertible hits 100 km/h in 4.54 s versus 5.19 s for the Panamera S. At this point, the Bmw M240i xDrive Convertible leads by 0.66 s and sits roughly 9 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M240i xDrive Convertible is doing 145 km/h against 140 km/h for the Panamera S. The gap is 0.49 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw M240i xDrive Convertible crosses the line in 12.74 s versus 13.35 s. The 0.61 s gap represents roughly 29 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Bmw M240i xDrive Convertible continues to build its lead. At 600 metres, it runs at 201 km/h versus 196 km/h. At 1,000 metres, the Bmw M240i xDrive Convertible finishes in 23.19 s versus 24.06 s, with a 0.86 s lead. Despite a higher top speed (276 km/h), the Panamera S never recovers its launch deficit.
What the numbers don’t tell you
The Bmw M240i xDrive Convertible features all-wheel drive (AWD) against the Panamera S’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.
Both rivals are electronically governed, but not at the same level: the Panamera S is capped at 282 km/h, the Bmw M240i xDrive Convertible 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 5.06 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.78 seconds. The 0.66 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M240i xDrive Convertible has a clear edge over the Porsche Panamera S to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.