I found another culprits for poor fuel economy - rain and wet asphalt - on roads with speed limit 55 mph at speed 55 mph when asphalt wet and in rain i can only get 70 MPG, when there is no rain and asphalt is dry i can squize 80-85 MPG (on long trip of course)
I not remember that with gasoline car i had so big difference in fuel consumption in similar conditions.
But also 70MPG for me big difference - with my previus cars in town i can`t ahive more then 28MPG (Yaris 4 gear automatic 2001), 47MPG (Baleno 2018 5 manual gear ) 22 MPG (Vitara 2019 1.0l turbo 6 gear auto )