Bmw X7 M50i G07 vs Porsche 911 Carrera 4 GTS 991.2 : 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 96%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 96 %.
Bmw X7 M50i vs 911 Carrera 4 GTS: chronicle of a drag race at 309 km/h
The launch: 0 to 100 km/h
Off the line, the 911 Carrera 4 GTS hits 100 km/h in 3.47 s versus 4.74 s for the Bmw X7 M50i. At this point, the 911 Carrera 4 GTS leads by 1.26 s and sits roughly 11 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 911 Carrera 4 GTS is doing 167 km/h against 144 km/h for the Bmw X7 M50i. The gap is 1.07 s. The challenger starts to claw back ground.
At 400 metres standing start, the 911 Carrera 4 GTS crosses the line in 11.24 s versus 12.92 s. The 1.68 s gap represents roughly 81 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 911 Carrera 4 GTS continues to build its lead. At 600 metres, it runs at 232 km/h versus 201 km/h. At 1,000 metres, the 911 Carrera 4 GTS finishes in 20.26 s versus 23.38 s, with a 3.12 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Bmw X7 M50i is capped at 250 km/h, the 911 Carrera 4 GTS at 309 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 (4.70 kg/hp vs 3.11 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.08 seconds. The 1.26 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 911 Carrera 4 GTS has a clear edge over the Bmw X7 M50i to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.