Bmw M550d xDrive G30 vs Porsche 911 Carrera 4 (PDK) 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%Reading the duel
At 400 m, Bmw M550d xDrive leads by 0.07 s. At 1 000 m, Porsche 911 Carrera 4 (PDK) takes the lead 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 95 %.
Bmw M550d xDrive vs 911 Carrera 4 (PDK): chronicle of a drag race at 282 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 4.68 s for the 911 Carrera 4 (PDK). At this point, the Bmw M550d xDrive leads by 0.23 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 149 km/h for the 911 Carrera 4 (PDK). The gap is 0.15 s. The gap remains stable from the start.
At 400 metres standing start, the Bmw M550d xDrive crosses the line in 12.66 s versus 12.72 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 situation changes. The Bmw M550d xDrive maxes out at 250 km/h while the 911 Carrera 4 (PDK) keeps accelerating towards 282 km/h. At 600 metres, the gap has dropped to 0.00 s.
Around 579 metres, both vehicles are level. This is the inversion point: the 911 Carrera 4 (PDK) overcomes its launch deficit thanks to a 32 km/h higher top speed.
At 1,000 metres, the 911 Carrera 4 (PDK) finishes in 22.87 s versus 22.93 s. The 0.06 s delta shows an extremely tight race.
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 4 (PDK) at 282 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 Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.83 seconds. The 0.23 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 4 (PDK) to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.