As global automotive markets continue transitioning at different speeds toward electrification, vehicle manufacturers are increasingly seeking flexible architectures capable of supporting multiple propulsion technologies while reducing development complexity. To address these evolving requirements, Stellantis has developed the STLA One platform and a scalable powertrain strategy designed to support a broad range of vehicle segments, energy sources, and regional market needs. The approach focuses on platform consolidation, shared technologies, and flexible propulsion options that can adapt to varying customer and regulatory requirements worldwide.
At the center of the strategy is the new STLA One platform, a modular architecture that consolidates five existing vehicle platforms into a single scalable foundation covering B-, C-, and D-segment vehicles. Built around common interfaces, the platform is designed to support multiple powertrain technologies while reducing engineering complexity and increasing component sharing across Stellantis brands. This modular approach enables faster deployment of new technologies while allowing individual brands to maintain distinct vehicle characteristics and customer experiences.
A major technical advancement within STLA One is Stellantis’ updated battery strategy. The platform expands the use of Lithium Iron Phosphate (LFP) batteries to improve affordability and reduce dependence on critical raw materials. It also incorporates cell-to-body technology, where the battery becomes an integral part of the vehicle structure. According to the company, these innovations help reduce weight, cost, and system complexity while improving overall vehicle efficiency. The platform additionally supports 800-volt electrical architectures, enabling competitive charging performance and enhanced battery electric vehicle capabilities.
Beyond the vehicle platform itself, Stellantis has adopted a multi-energy powertrain strategy designed to provide flexibility across different markets and use cases. The company continues to invest in battery electric vehicles (BEVs) while also supporting Hybrid Electric Vehicles (HEVs), Plug-in Hybrid Electric Vehicles (PHEVs), Range-Extended Electric Vehicles (REEVs), and advanced internal combustion engine technologies. This approach allows Stellantis to tailor propulsion solutions based on regional electrification adoption rates while leveraging common engineering foundations across vehicle programs.
The company’s electrified portfolio includes advanced Electric Drive Modules (EDMs), battery technologies, and scalable electric powertrains ranging from cost-focused entry-level EVs to high-performance 800-volt architectures. Stellantis also highlights REEV technology as a bridge toward broader electrification, combining electric driving capability with extended range flexibility. According to the company, REEV systems can enable up to 90% of daily driving in electric mode while also supporting vehicle-to-grid (V2G) functionality.
By combining the STLA One modular platform, LFP battery integration, cell-to-body construction, 800-volt electrical architecture, and a comprehensive multi-energy powertrain portfolio, Stellantis is building a flexible technology ecosystem designed to support the industry's ongoing transition toward sustainable mobility while accommodating diverse customer needs and market conditions worldwide.
Click here to learn more about Electric Vehicles on everything PE.
About Stellantis
Stellantis is one of the world's leading automotive manufacturers, bringing together 14 vehicle brands including Jeep, Peugeot, Fiat, Citroën, Opel, Ram, Chrysler, Dodge, Alfa Romeo, Maserati, and others. The company develops technologies across vehicle platforms, electrification, software, connectivity, and advanced propulsion systems, with a focus on delivering sustainable mobility solutions through scalable architectures and flexible multi-energy vehicle strategies.
