My Ioniq is all over the place with mpg at 80 mph. Just depends on winds or ambient temps or elevation or whatever the computer wants to do. Some days it’s extremely efficient and some days it’s a guzzler, even when the two situations are almost identical. No idea how to describe it
Long story short, it seems like some aero mods and lowering the overall drag of the car would put less stress and load on the hybrid system, therefore tricking it into thinking it’s driving slower and then boosting the mpg significantly.
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