A plug-in hybrid electric vehicle carries a larger battery than hybrid vehicles that cannot be plugged in. The larger battery size enables plug-in hybrids to operate in all-electric mode without engaging the combustion engine within a certain range and speed. The batteries in plug-in hybrids can be charged using a standard 120V household outlet, or a more powerful 240V outlet found at a public charging station or in the available BMW i Wallbox. In addition, the driver also has the option of using the combustion engine in tandem with the electric motor or independently.
A hybrid vehicle, by contrast, cannot be charged from an external power source – they rely on energy generated from gasoline or regenerative braking. This limited power supply is not designed to support all-electric driving, and the smaller battery delivers fewer of the efficiency benefits of a plug-in hybrid electric vehicle.
A mild hybrid electric vehicle (MHEV) is powered by a combustion engine supported by a 48V electric motor integrated into the drivetrain. While MHEVs cannot be driven on full electric power, the electric motor assists the combustion engine in certain situations – as a starter for seamless Auto Start/Stops, while accelerating from a standstill, or when you need extra eBoost acceleration as you drive. Mild hybrid technology optimizes efficiency and performance while increasing overall comfort for the driver.
Learn more about BMW Plug-in Hybrids here.
