Stellantis has introduced STLA One, a new modular vehicle architecture designed to support multiple propulsion systems and vehicle sizes as part of the company’s broader platform standardization strategy.
The automaker said STLA One is engineered to support B-, C- and D-segment vehicles and is intended to reduce development complexity, improve scalability and enhance cost efficiency through modular interfaces and shared components.
According to Stellantis, the platform is designed to deliver a 20% improvement in cost efficiency through modular engineering and expanded battery technology options.
The company said the architecture forms part of its long-term strategy to consolidate production onto fewer global platforms. By 2030, Stellantis aims to build 50% of its vehicle volume on three global platforms while achieving up to 70% component reuse.
“STLA One is a clear example of a truly modular strategy, giving us the flexibility of a multi-energy platform without carrying inefficiencies from one propulsion system to another,” said Ned Curic, chief engineering and technology officer at Stellantis.
The company said the platform was designed with propulsion-specific optimization from the outset to improve efficiency across different energy systems, including battery-electric and other powertrain configurations.
Stellantis said STLA One is expected to support more than 30 vehicle models globally and could scale to over 2 million units annually by 2035.
The architecture will also be the first Stellantis platform planned to integrate the company’s STLA Brain electronic architecture, STLA SmartCockpit system and steer-by-wire technology.
According to the company, the software and hardware integration is intended to accelerate feature deployment while allowing individual Stellantis brands to maintain distinct customer experiences.
Stellantis plans to launch STLA One in 2027.
The platform will support 800-volt electrical architecture and expanded use of lithium iron phosphate batteries aimed at improving affordability and reducing reliance on critical raw materials.
The company also plans to use cell-to-body battery integration, where battery packs become part of the vehicle structure to reduce weight, complexity and manufacturing costs.
Stellantis said the modular platform approach is intended to improve the economics of battery-electric vehicles over time while helping streamline operations and strengthen competitiveness in key markets, including Europe.