[bryanlarsen]

Hydrogen Fuel Cell vehicles have a large battery, larger than the ones in a Prius.

[nradov]

The Toyota Mirai fuel cell vehicle has a small battery, only 1.2 kWh.

https://www.toyota.com/mirai/2023/features/

[theshrike79]

And story has it the small battery is the reason for the pathetic performance. (9.1 seconds 0-60 speed, which is minivan levels).

The fuel cell can't produce electricity fast enough to power the engines for proper acceleration and the battery doesn't have enough buffer.

[nradov]

The Honda Odyssey minivan can run 0-60 mph in under 7 seconds. So I guess the Mirai is worse than a minivan. But maybe good enough for a city car.