A Plug-In Hybrid Electric Vehicle (PHEV) is referred to in German as a Plug-In Hybrid Electric Vehicle (PHEF), i.e. a vehicle with a hybrid drive that has a battery-powered electric motor in addition to an internal combustion engine. The term plug-in refers to the fact that the battery for the electric motor of the hybrid vehicle is charged at a charging station. In contrast, the batteries of hybrid cars are charged by the internal combustion engine.
Hybrid vehicles run either on petrol or diesel, or electrically using the energy from the charged battery. The driving distance that can be covered with electric energy is sufficient for short distances of less than 100 km. It is much less than the distance that can be driven with petrol. The batteries are generally charged at a charging station, but there are also concepts with which the braking energy is converted into charging current. The energy of the combustion engine can also be converted into electrical energy. However, this reduces the efficiency. In this motor vehicle concept, the electric drive is used until the batteries are empty.