What does 2.5 hybrid mean?

[DeReid]

Hybrid vehicles refer to cars equipped with two or more power sources, also known as composite power vehicles. 2.5 hybrid refers to vehicles using a 2.5L hybrid system. Below is relevant information about hybrid vehicles: 1. Introduction: Hybrid vehicles are equipped with two power sources simultaneously - thermal power source (generated by traditional gasoline or diesel engines) and electric power source (battery and electric motor). 2. Classification of hybrid vehicles: One type uses the engine as the main power source with an electric motor as auxiliary power in a "parallel configuration"; another type relies solely on the electric motor for low-speed driving, with the engine and electric motor working together at higher speeds in a "series-parallel configuration"; there's also a type that uses only the electric motor for driving, known as the "series configuration" electric vehicle.