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Fogestyesterday at 10:54 PM1 replyview on HN

Referring to the example from the Twitter post you cited, wouldn't the KWh per mile simply be a lot higher because these vehicles are engaging in much less efficient travel overall? City driving itself is often pretty inefficient because of all the stopping and going, and these vehicles likely are driving in a lot of the rush hour traffic and high density areas everyday. Not to mention they probably idle around a lot more than a normal persons car would in a day.

So wouldn't that be the reason the figures would look 2.5x worse than the regular Jaguar? I'm sure there are other factors of course since running the computer systems, lidar and all the other features will also consume more power, so I'm sure from a baseline it will be less efficient anyway, I just think because of the kind of driving it engages in, this will make it also look far less efficient.


Replies

porphyrayesterday at 11:11 PM

Possible, but EVs tend to be more efficient in city driving than highway driving, thanks to regenerative braking and the fact that the dominant form of energy loss, air resistance, scales quadratically with speed.