Could be a combination of that and EV-specific tires that decrease resistance and increase range. What I've observed is that I get about 5.2-5.3 in the summer,

Could be a combination of that and EV-specific tires that decrease resistance and increase range. What I've observed is that I get about 5.2-5.3 in the summer, and about 4.8 in the winter. When my wife drives it, she gets more like 4.9 in the summer, and 4.5 in the winter. So there's a difference in driving style, but my wife definitely doesn't try to drive particularly efficiently and still beats 3.5 by quite a bit.