The average Brit drives under 20 miles per day. A Tesla will do 4 miles per kWh, meaning it requires 5 kWh per day. That's 1/8 of 40 kWh. I'm not sure where the discrepancy is.
Regenerative braking? Or the IC engine not being operated at its most efficient power point.
Regenerative braking? Or the IC engine not being operated at its most efficient power point.