Efficiency, distance and power in the units you see on spec sheets around the world.
Lower kWh/100 km is more efficient; higher mi/kWh, km/kWh or MPGe is more efficient. MPGe uses 33.705 kWh per gallon of gasoline.
hp is mechanical horsepower (745.7 W); PS is metric horsepower (735.5 W).
Power = volts × amps × number of phases. The car's onboard charger may limit what it actually accepts.