Renault's Emblème project represents a significant step towards sustainable mobility through the development of a family car prototype that incorporates hydrogen technology. The project, initiated as an extension of Renault's Scenic Vision concept, aims to drastically reduce the carbon footprint of the vehicle throughout its entire life cycle. The Emblème demo car, developed by Renault's Ampere electric vehicle subsidiary, features a dual-energy electric powertrain powered by a combination of electricity and hydrogen, resulting in a 90% reduction in greenhouse gas emissions compared to a 2019 baseline. In addition to the innovative powertrain, the Emblème design incorporates various sustainable technologies and materials to achieve substantial reductions in carbon footprint. The vehicle's construction involves a 70% reduction in the carbon footprint for all parts production, with 50% of materials being recycled and all materials being recyclable at the end of their service life. Engineers and designers collaborated to optimize aerodynamics, energy efficiency, and overall vehicle weight, resulting in a reduced weight of 1800kg. The project's sustainability efforts extend beyond the design phase, encompassing the entire life cycle of the vehicle through life cycle analysis (LCA). This analysis includes factors such as raw material extraction, component production, assembly, usage, maintenance, and recycling, enabling Renault to calculate the vehicle's actual consumption over 200,000 km and 15 years. The target for the Emblème project is to limit total CO2eq emissions to 5 tonnes from cradle to grave, a goal verified by independent experts from IFPEN. Renault's collaboration with suppliers like Forvia Hella, STMicroelectronics, Valeo, and Verkor has been instrumental in optimizing materials selection and design processes for enhanced sustainability. For example, headlamps developed by Forvia Hella halve their lifecycle CO2eq emissions by utilizing fresnel lenses and reducing material usage. ST's silicon carbide MOSFETs and Verkor's advanced battery system further contribute to reducing carbon emissions and achieving a more sustainable automotive ecosystem. Overall, the Emblème project exemplifies Renault's commitment to sustainable mobility and innovation, emphasizing decarbonization without compromising on essential features like comfort, safety, and connectivity. Through a collaborative and comprehensive approach, Renault and its partners have demonstrated how barrier-free innovation can drive ambitious sustainability targets in the automotive industry.