Is 48V a mild hybrid?

The 48V system does fall into the category of mild hybrid technology. Its core lies in the collaborative operation of a 48V lithium battery and an electric motor (such as BSG or ISG), which assists the engine in high-load scenarios like vehicle startup and acceleration, while also recovering braking energy to reduce fuel consumption. This system can cut fuel consumption by approximately 10-15% and meets increasingly stringent emission standards, hence being widely adopted by brands such as Mercedes-Benz, BMW, and Proton. However, the motor power of 48V mild hybrids is limited (usually 10-20kW), so they cannot achieve pure electric driving like full hybrids (Hybrid) or plug-in hybrids (PHEV), and only exist as an auxiliary to the internal combustion engine. Some manufacturers like Toyota believe the 48V system should not be classified as hybrid technology due to its relatively basic functions. For example, models like the Mercedes-AMG C43 have been equipped with this technology, balancing performance and energy efficiency.