I see your point but I think the proper equation uses radians per second which is the proper engineering unit for rotational speed, and has the units 1/s, not rpm but this is accounted for in the value of the constant.
I agree with kreshi. Kwh per mile is a ridiculous way to measure consumption. It's only logged to one decimal place, so typically 0.3 or 0.4 kwh per mile. This could be between 3.3 and 2.5 miles per kwh, which is a huge difference, so is not a useful figure at all.
Yes. Exactly the same on my 2020 4s from new. Dealership were hoping the big update would fix it but it didn't so they've lost interest. Seems trivial but extremely annoying on a car of this price. Is this data calculated and stored by the car, or the Porsche server?