Weight (mass) is pertinent when accelerating or hill climbing, of course, and it may affect rolling resistance. The last factor is largely dealt with by higher tyre pressures. It's an education to one such as myself whose driving life has hitherto been exclusively ICE just how much weather and speed can affect economy. I already knew that wet roads cause higher consumption, and headwinds likewise, but some diesel cars (I've had four) are at their most economical at the upper end of legality - 60mph or thereabouts. My diesel Jaguar X-Type is barely above idle in 6th gear at 60mph. An EV is consuming energy in handfuls at higher speeds though.
EVs are very seriously affected by cold weather and 'hotel loading' - i.e. heater/aircon, lights and wipers. The heater being head and shoulders worse than any other. Driving style is, I find, gentler in an auto and more so still in an EV than it is in a manual. I'm constantly striving to reach the speed of the next upward gear change in a manual.
Outlander Dynamic MY2020, BMW Z3 Sport Roadster 2002 build 2.2i straight six, Westfield SEiW 2 litre (for trackday use). Jaguar X-Type Sovereign Estate leaving soon. Nissan leaf Tekna already left!