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/
With ICE it depends how far you regularly drive the car and therefore how much of your motoring is on enriched mixture (choke) and how much is on normal mixture. If you are regularly driving 10 mile or so journeys then fuel economy should not be more than 2-3mpg worse in winter. If your pottering locally economy can be worse because the car is on choke.
However you can’t compare an ICE to a BEV, where by nature the battery degrades quicker due to yhe IN’s being less excited along with th greatere use of ancilliaries, which can see a 20-30% reduction in range.