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Kia/Hyundai uses cameras and screens instead of mirrors in South Korea but that technology is illegal here in the US so we get mirrors. Its not too different than adaptive headlights which can adjust themselves to not blind other drivers. Legal in Europe but illegal in the US.
I think those are legal where I'm at, but if you have both mirrors and cameras it should be allowed by default. Also in the case of Honda e, I wonder how much power the screens and "mirrors" are eating, in a tiny car like that it might be noticeable.
Most cameras are around 5W when in use, and it looks like the Honda e has a 35.5 kWh battery, and real world testing of the Honda e comes to around 167 Wh/km or 270 Wh/mile, so if you assume 3 cameras (2 side, 1 rearview) to replace mirrors, every hour of uninterrupted driving will have the cameras reducing your range by around 90 meters?
Thank you. I was mostly worried about running 5 screens at all times. Every mirror replacement system I've seen in pictures uses really bright screens and the E has 3 infotainment screens on top of that.
So if we count them as 5W each (12.3 main displays are probably hungrier, but camera displays are way smaller, and they're almost certainly IPS), that's ~25W, so 150 meters by your calculation? Doesn't sound that bad tbh. And on top of that the 12.3" ones can be turned off.