The license plate type of hybrid vehicles mainly depends on the composition of their power system, which can be summarized as follows:
1. Plug in hybrid vehicles: These vehicles belong to the category of new energy vehicles because they can be charged from an external power source and automatically or manually switch between electric power and internal combustion engine power as needed during operation. Plug in hybrid vehicles should have a green new energy license plate, also known as a green license plate.
2. Oil electric hybrid vehicles: These vehicles mainly rely on the coordinated work of traditional internal combustion engines and electric motors, but cannot be charged by external power sources. They are classified as ordinary motor vehicles, therefore they should have regular blue license plates, i.e. blue license plates.
3. Range extender hybrid vehicles: Although range extender hybrid vehicles also use electric drive systems, their power source is mainly generated by internal combustion engines and supplied to electric motors, rather than directly charged by external power sources. According to current regulations, extended range hybrid vehicles should also have a regular blue license plate, also known as a blue license plate.
The license plate types of hybrid vehicles are differentiated based on their power systems, with plug-in hybrid vehicles bearing green plates and hybrid and range extender hybrid vehicles bearing blue plates.