PHEV signifies Plug-in Hybrid Electric Vehicle, catering to individuals aiming to transition away from traditional gas and diesel cars but may not be prepared to embrace a fully electric one. HEV represents Hybrid Electric Vehicle, featuring both a gas engine and a battery, yet it does not necessitate plugging in for charging. HEV drivers often hear the gas engine running, with the battery replenishing through regenerative braking. When the brake pedal is pressed, the electric motor reverses to function as a generator, charging the battery.