BMW X7 xDrive40d G07 vs BMW X2 xDrive25e F39: which is truly faster?

Off the line, the X7 xDrive40d hits 100 km/h in 6.12 s versus 6.92 s for the X2 xDrive25e. Despite lacking instant torque, 340 hp of power compensates. At this point, the X7 xDrive40d leads by 0.80 s and sits roughly 8 m ahead.

At 200 metres, the X7 xDrive40d is doing 126 km/h against 121 km/h for the X2 xDrive25e. The gap is 0.43 s. The challenger starts to claw back ground.

At 400 metres standing start, the X7 xDrive40d crosses the line in 14.39 s versus 15.05 s. The 0.66 s gap represents roughly 27 m of track - two to three car lengths.

Past 400 metres, the X7 xDrive40d continues to build its lead. At 600 metres, it runs at 174 km/h versus 167 km/h. At 1,000 metres, the X7 xDrive40d finishes in 26.45 s versus 27.66 s, with a 1.21 s lead.

Both rivals are electronically governed, but not at the same level: the X7 xDrive40d is capped at 245 km/h, the X2 xDrive25e at 195 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 11.30 seconds. The 0.80 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.