Ho, that's an old picture...
Today's odb is :
Just 5L of gasoline (1.32 gallon) So it become possible to drive 51 000 km (31690 miles) with one tank (60/5*4252km).
But winter is comming. It may be cold here, less then 0°C (32F) so I will see.
I have only 700w electric heater inside today. If needed more I have to use engine heat losts.
Used 87 Wh/km from the cells or 102 Wh/km from the plug.
I really don't know how many times I plug the car.
Most of them where in my garage, probably more then 90%.
A few at work and rarely on public charging points.