Germany has high gasoline cost. If what Google tells me is correct about current costs per kWh to charge at Tesla Superchargers there (0.40-0.70 Euro) and current gas prices there (1.70 Euro/liter) an EV charged at Superchargers would have about the same energy costs as an ICE car that gets 16 km/l if you charge at the more expensive Supercharges and an ICE car that gets 28 km/l if you charge at the less expensive Superchargers.