Bmw M550d xDrive G30 vs Porsche 911 Carrera 4 991.1 : 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%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: chronicle of a drag race at 285 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 4.90 s for the 911 Carrera 4. At this point, the Bmw M550d xDrive leads by 0.45 s and sits roughly 7 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M550d xDrive is doing 146 km/h against 147 km/h for the 911 Carrera 4. The gap is 0.29 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw M550d xDrive crosses the line in 12.66 s versus 12.85 s. The 0.19 s gap represents roughly 10 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the gap narrows. The Bmw M550d xDrive maxes out at 250 km/h while the 911 Carrera 4 keeps accelerating towards 285 km/h. At 600 metres, the gap has dropped to 0.12 s.
At 1,000 metres, the Bmw M550d xDrive finishes in 22.93 s versus 22.96 s, with just 0.03 s to spare. The 911 Carrera 4 fails to fully close the launch gap.
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 at 285 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 4.03 kg/hp) and transmission (Automatic vs Manual).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.15 seconds. The 0.45 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 to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.