Bmw M550d xDrive G30 vs Porsche 911 Carrera Cab 991.1 : 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%The Bmw M550d reaches 100 km/h first (4.45 s vs 4.51 s), but the 911 Carrera is ahead at every metre of the race. Explanation: the 911 Carrera accelerates harder at low speed and builds a distance gap before either car hits 100 km/h.
Why this result?
The Bmw M550d xDrive is faster at 0-100 km/h, but the Porsche 911 Carrera Cab compensates at high speed thanks to higher peak power or top speed. At 400 m, Porsche 911 Carrera Cab leads by 0.04 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 95 %.
Bmw M550d xDrive vs 911 Carrera Cab: chronicle of a drag race at 289 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw M550d xDrive hits 100 km/h in 4.45 s versus 4.52 s for the 911 Carrera Cab. The 0.07 s gap is negligible: both vehicles are neck and neck.
From 100 km/h to 400 metres
At 200 metres, the Bmw M550d xDrive is doing 146 km/h against 148 km/h for the 911 Carrera Cab. The gap is 0.05 s. The gap remains stable from the start.
At 400 metres standing start, the 911 Carrera Cab crosses the line in 12.62 s versus 12.66 s. The 0.04 s gap represents roughly 2 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 911 Carrera Cab continues to build its lead. At 600 metres, it runs at 208 km/h versus 204 km/h. At 1,000 metres, the 911 Carrera Cab finishes in 22.72 s versus 22.93 s, with a 0.21 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Bmw M550d xDrive is capped at 250 km/h, the 911 Carrera Cab at 289 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 (4.65 kg/hp vs 4.29 kg/hp) and transmission (Automatic vs Unknown).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.77 seconds. The 0.07 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M550d xDrive is slightly faster than the Porsche 911 Carrera Cab to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.