The optimisation of modern combustion engines plays an important role at Mercedes-Benz. Electrification and a 48-volt on-board electrical system allow reductions in consumption that had previously been the sole preserve of hybrid technology. Mercedes-Benz refers to this technology as EQ Boost. The 48-volt on-board electrical system makes it possible to implement important hybrid functions such as “recuperate”, “boost” and “coast” for the first time without high-voltage components thanks to the integrated or belt-driven starter alternator. This makes it possible to significantly reduce consumption. In addition to reducing consumption and CO2, the 48-volt on-board electrical system also facilitates extra comfort because it can rev a combustion engine up to idle smoothly. This improves the NVH (Noise, Vibration, Harshness) profile, and the transition when the engine starts is even quieter.