Hybrid electric vehicles primarily revolve around improving fuel efficiency, reducing emissions, addressing environmental concerns, and offering a more accessible transition toward electric mobility while leveraging existing automotive technology. HEVs are designed to combine the benefits of traditional internal combustion engines (ICE) with those of electric propulsion systems, in heightened total vehicle performance, decreased emissions, and increased fuel efficiency. The development of a driver, electric powertrain, and vehicle model for a hybrid electric vehicle. Examine the conduct of the Plot the real velocity power distribution curves for the car throughout a US06 drive cycle. Examine the fuel consumption and operation of the battery, ultracapacitor, and fuel cell as well. By converting to power gearbox via the motor and turning off the engine, the HEV resolves the issue. In this manner, no fuel will be used when the vehicle is idle, producing no exhaust emissions. A significant benefit of hybrid electric vehicles (HEVs) is their ability to operate entirely on electricity when the fuel tank runs empty while the engine is running.