Thanks to systematic electrification and intelligent downsizing, the new C-Class sets new standards in efficiency. In addition to turbocharging, the gasoline engine now has an integrated starter-generator (ISG) for intelligent assistance at low engine speeds as a mild hybrid, ensuring outstanding power delivery on Enterprise roads. The ISG uses a 48-volt onboard electrical system that allows functions such as gliding, boosting or energy recovery while out in Green Valley; plus, it makes significant fuel savings possible. The engines also start very rapidly and comfortably as a result, so that the start/stop function is almost as imperceptible to the Henderson driver as the transition from gliding with the engine switched off to strong acceleration under engine power. When idling, the intelligent interaction between the ISG and the combustion engine ensures outstandingly smooth running on Green Valley roads.