Porsche 911 Carrera GTS 991.2 vs Bmw X7 M50d : 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 94%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 94 %.
911 Carrera GTS vs Bmw X7 M50d: chronicle of a drag race at 311 km/h
The launch: 0 to 100 km/h
Off the line, the 911 Carrera GTS hits 100 km/h in 3.65 s versus 5.49 s for the Bmw X7 M50d. At this point, the 911 Carrera GTS leads by 1.84 s and sits roughly 11 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 911 Carrera GTS is doing 166 km/h against 132 km/h for the Bmw X7 M50d. The gap is 1.42 s. The challenger starts to claw back ground.
At 400 metres standing start, the 911 Carrera GTS crosses the line in 11.41 s versus 13.82 s. The 2.40 s gap represents roughly 105 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 911 Carrera GTS continues to build its lead. At 600 metres, it runs at 230 km/h versus 184 km/h. At 1,000 metres, the 911 Carrera GTS finishes in 20.49 s versus 25.28 s, with a 4.78 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the 911 Carrera GTS is capped at 311 km/h, the Bmw X7 M50d 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 (3.02 kg/hp vs 6.15 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.69 seconds. The 1.84 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 911 Carrera GTS has a clear edge over the Bmw X7 M50d to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.