In the interest of click saving:

"The only problem is that McLaren’s marketing line of being the “world’s most powerful trail-legal electric mountain bikes” is, at best, misleading, and at worst, patently false.

The issue is that for European e-bikes, 250W is the legal limit for both on-road and trail usage. So if you’ve got a 250W e-bike, you’ve basically tied every single other e-bike on the market for highest power. Of course, none of the 250W e-bikes rolling around today actually put out only 250W of power. They all sneak by with higher peak power ratings, but the continuous power ratings are all identical. Thus, claiming to have the world’s most powerful trail-legal electric mountain bike is a bit like claiming to sell the world’s tallest 6-foot ladder.

When you look at the US market, it’s even more problematic. E-bikes in the US fall under various regulations depending on the state, but most areas use a 3-class system. And to make things simple, all three classes allow up to 750 watts of power.

If you’re on private property, it doesn’t really matter how much power your e-bike has. ‘Murica! But if you’re on public property, like public roads or trails on state land, you’re likely going to be limited to that 750W of power in most places. Thus, claiming that a 600W e-bike is the world’s most powerful trail-legal e-bike is obviously quite problematic in the land of 750W e-bikes."