Does a plug-in hybrid consume more fuel if not charged?

[HarmonyFitz]

According to the design, plug-in hybrid vehicles are most fuel-efficient when operating in pure electric drive mode. If they are not charged for a long time, they operate purely on fuel mode, just like conventional vehicles. Reasons: Even when not charged, plug-in hybrids still maintain about 15% of the initial battery charge. During startup and low-to-medium speed driving, the electric motor still intervenes to avoid the inefficient operating conditions of the fuel engine. In hybrid mode, the electric motor also provides additional boost during sudden acceleration. Plug-in Hybrid Electric Vehicle (PHEV): A Plug-in Hybrid Electric Vehicle (PHEV) is a type of new energy vehicle that bridges the gap between pure electric vehicles and conventional fuel vehicles. It has the engine, transmission, drivetrain, fuel system, and fuel tank of a traditional car, as well as the battery, electric motor, control circuit, and a charging port of a pure electric vehicle, with a relatively large battery capacity. Combining the advantages of both pure electric vehicles (EVs) and hybrid electric vehicles (HEVs), PHEVs can achieve pure electric, zero-emission driving and also extend the vehicle's range through hybrid mode.