Hello there, Electric battery vehicles are at their most efficient when the battery is up to temperature and they aren’t at their most efficient doing short journeys with a cold battery. After 10 miles or so, depending on the ambient temperature, the efficiency improves greatly, so ignore the efficiency readings after short journeys with a cold battery. ICEs are exactly the same. Just live with the car and you’ll learn how it behaves. Happy motoring 🤞👍
Thats a new one on me. It does make sense though. If your car is plugged in at home, pre-heat the car, that’ll warm up both battery and the car using the house power supply.
Motoring in the cold wasn’t something that was really spoken about until EVs came along but it’s always been more costly
https://www.cars.com/articles/why-do-cars-get-worse-fuel-economy-in-cold-weather-475436/