
The B-Series is the unique class of Mild-Hybrids engine choices for Volvo models that come in the B4, B5, and B6 options. As Volvo moves towards a more efficient and greener future, consider the B-series engine the evolution of the traditional T-Series engines. The B-series is not a standard Hybrid engine, which is currently available from Volvo with the T8 engine option, but is what's commonly known in the industry as a Mild Hybrid engine. Is the B series the death of the combustion engine for Volvo? Not quite, but it is a signal to more responsible and better…