This mode maintains the charge of the high-voltage battery constantly at the desired level or increases it to the preset value, by having the electric motor function as a generator. In addition, charging can also take place during the journey with the function known as Battery Control Mode. Regenerative braking allows the plug-in hybrid to regain part of its energy. Without charging, all-electric driving will be limited, and power reserves for the eBoost function will be much lower. For optimized efficiency, BMW recommends regular charging overnight.īMW plug-in hybrids can also charge while driving. Mild hybrid technology optimizes efficiency and performance while increasing overall comfort for the driver.Ĭharging the battery of your plug-in hybrid vehicle is highly recommended to maximize efficiency and power. 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. 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.Ī mild hybrid electric vehicle (MHEV) is powered by a combustion engine supported by a 48V electric motor integrated into the drivetrain. In addition, the driver also has the option of using the combustion engine in tandem with the electric motor or independently.Ī hybrid vehicle, by contrast, cannot be charged from an external power source – they rely on energy generated from gasoline or regenerative braking. 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. 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. A plug-in hybrid electric vehicle carries a larger battery than hybrid vehicles that cannot be plugged in.

2019 plug in hybrid vehicles