Xpeng X9 vs Ford Mustang GT S550 450 : 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 97%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 97 %.
X9 vs Mustang GT S550 450: chronicle of a drag race at 250 km/h
The launch: 0 to 100 km/h
Off the line, the X9 hits 100 km/h in 3.88 s versus 4.53 s for the Mustang GT S550 450. The instant torque of 717 Nm from the electric motor makes the difference. At this point, the X9 leads by 0.65 s and sits roughly 7 m ahead.
From 100 km/h to 400 metres
At 200 metres, the X9 is doing 173 km/h against 154 km/h for the Mustang GT S550 450. The gap is 0.71 s. The gap remains stable from the start.
At 400 metres standing start, the X9 crosses the line in 11.34 s versus 12.46 s. The 1.12 s gap represents roughly 58 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the gap narrows. The X9 maxes out at 200 km/h while the Mustang GT S550 450 keeps accelerating towards 250 km/h. At 600 metres, the gap has dropped to 1.08 s.
At 1,000 metres, the X9 finishes in 22.13 s versus 22.31 s, with just 0.18 s to spare. The Mustang GT S550 450 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 X9 is capped at 200 km/h, the Mustang GT S550 450 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.
Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.37 seconds. The 0.65 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Xpeng X9 has a clear edge over the Ford Mustang GT S550 450 to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.