Mercedes G 450 d W463 vs BMW X7 xDrive40d G07: which is truly faster?

Off the line, the G 450 d hits 100 km/h in 5.83 s versus 6.12 s for the X7 xDrive40d. At this point, the G 450 d leads by 0.29 s and sits roughly 5 m ahead.

At 200 metres, the G 450 d is doing 128 km/h against 126 km/h for the X7 xDrive40d. The gap is 0.22 s. The gap remains stable from the start.

At 400 metres standing start, the G 450 d crosses the line in 14.11 s versus 14.39 s. The 0.28 s gap represents roughly 12 m of track - two to three car lengths.

Past 400 metres, the gap narrows. The G 450 d maxes out at 210 km/h while the X7 xDrive40d keeps accelerating towards 245 km/h. At 600 metres, the gap has dropped to 0.28 s.

At 1,000 metres, the G 450 d finishes in 26.22 s versus 26.45 s, with just 0.23 s to spare. The X7 xDrive40d fails to fully close the launch gap.

Both rivals are electronically governed, but not at the same level: the G 450 d is capped at 210 km/h, the X7 xDrive40d at 245 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 (6.96 kg/hp vs 7.26 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 9.90 seconds. The 0.29 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.