How do you make a bunny hopping, self-driving electric car that can jump over a variety of obstacles even more capable? You give it the most power an electric vehicle (EV) has ever seen.

The two German electric sedans came up way short of what the Xpeng P7 achieved in its latest endurance challenge.

Xiaomi, best known for smartphones and home appliances, has made waves in the automotive industry with its entry into the EV market—a sector that even tech giant Apple has struggled to crack. Jim ...