Xpeng X9 vs Tesla Model Y Performance : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
0-100Simulation de performance
Race simulation at real speed
CONFIDENCE 97%The Model Y reaches 100 km/h first (3.76 s vs 3.88 s), but the X9 is ahead at every metre of the race. Explanation: the X9 accelerates harder at low speed and builds a distance gap before either car hits 100 km/h.
Reading the duel
At 400 m, Xpeng X9 leads by 0.68 s. At 1 000 m, Tesla Model Y Performance takes the lead by 0.07 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 97 %.
X9 vs Model Y Performance: chronicle of a drag race at 250 km/h
The launch: 0 to 100 km/h
Off the line, the Model Y Performance hits 100 km/h in 3.76 s versus 3.88 s for the X9. At this point, the Model Y Performance leads by 0.12 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the X9 is doing 173 km/h against 152 km/h for the Model Y Performance. The gap is 0.18 s. The gap widens compared to the 0-100.
At 400 metres standing start, the X9 crosses the line in 11.34 s versus 12.01 s. The 0.68 s gap represents roughly 35 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the situation changes. The X9 maxes out at 200 km/h while the Model Y Performance keeps accelerating towards 250 km/h. At 600 metres, the gap has dropped to 0.71 s.
Around 976 metres, both vehicles are level. This is the inversion point: the Model Y Performance overcomes its launch deficit thanks to a 50 km/h higher top speed.
At 1,000 metres, the Model Y Performance finishes in 22.06 s versus 22.13 s. The 0.07 s delta shows an extremely tight race.
What the numbers don’t tell you
On paper, the X9 combines 543 hp, 717 Nm and 1,338 kg — a clear theoretical edge over the Model Y Performance. Yet the Model Y Performance launches quicker. At standstill, both motors deliver peak torque from 0 rpm: the decisive factor is no longer raw power, but available grip. If the Model Y Performance has a better traction coefficient (tyres, weight distribution, traction control calibration), it puts down more force despite inferior specs — exactly what the simulation reflects, calibrated on manufacturer 0-100 km/h times.
Both rivals are electronically governed, but not at the same level: the X9 is capped at 200 km/h, the Model Y Performance at 249 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 electric powertrains, the difference comes down to power-to-weight ratio (2.46 kg/hp vs 4.39 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.73 seconds. The 0.12 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Tesla Model Y Performance is slightly faster than the Xpeng X9 to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.