Some German cars display current usage as kWh/h, which is just a stupid way of saying kW. If you're using 3kW for one hour, that means you're using 3kWh ... per

Some German cars display current usage as kWh/h, which is just a stupid way of saying kW. If you're using 3kW for one hour, that means you're using 3kWh ... per hour. It just doesn't make any sense to write it like that. They correctly display the average usage over a given distance as kWh/100km. There's a lot of fuzz in the EV space since everyone is advertising WLTP (previously NADC) numbers as an indicator for range. It uses a standardized test, so this means the numbers should be comparable. But they're not. Some BEVs are much more efficient in cold weather than others, due to things like heat pumps or just better engineering, like aerodynamics. This isn't well reflected in WLTP, and people get disappointed. You can easily argue for both kWh or Wh. I've always been a proponent of using the smallest units possible, since then everything is just addition, regardless of what you want. With everything being in units of 10, it's fairly easy to do, either way. You could argue that the logical conclusion would be to use Ws/m, which is just ... Joules/m, another SI unit. But then we're using units that most people have no fundamental understanding of.