Xpeng P7 vs Bmw X4 M40i G02 : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
VMaxSimulation de performance
Race simulation at real speed
CONFIDENCE 90%Reading the duel
At 400 m, Xpeng P7 leads by 0.45 s. At 1 000 m, Bmw X4 M40i takes the lead by 1.64 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 90 %.
P7 vs Bmw X4 M40i: chronicle of a drag race at 250 km/h
The launch: 0 to 100 km/h
Off the line, the P7 hits 100 km/h in 4.22 s versus 4.76 s for the Bmw X4 M40i. The instant torque of 655 Nm from the electric motor makes the difference. At this point, the P7 leads by 0.54 s and sits roughly 7 m ahead.
From 100 km/h to 400 metres
At 200 metres, the P7 is doing 147 km/h against 143 km/h for the Bmw X4 M40i. The gap is 0.39 s. The challenger starts to claw back ground.
At 400 metres standing start, the P7 crosses the line in 12.54 s versus 12.99 s. The 0.45 s gap represents roughly 22 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the situation changes. The P7 maxes out at 170 km/h while the Bmw X4 M40i keeps accelerating towards 250 km/h. At 600 metres, the gap has dropped to 0.04 s.
Around 615 metres, both vehicles are level. This is the inversion point: the Bmw X4 M40i overcomes its launch deficit thanks to a 80 km/h higher top speed.
At 1,000 metres, the Bmw X4 M40i finishes in 23.60 s versus 25.24 s. The 1.64 s delta in favour of the Bmw X4 M40i shows that top speed makes a clear difference.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the P7 is capped at 170 km/h, the Bmw X4 M40i 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 7.22 seconds. The 0.54 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Xpeng P7 has a clear edge over the Bmw X4 M40i to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.