Stellantis has unveiled STLA One, a modular vehicle architecture launching in 2027 that will consolidate five platforms into one, span the B, C and D segments and target more than 2 million units by 2035. The 800V platform uses cell-to-body battery integration and increased LFP chemistry to reduce costs.
Stellantis has unveiled STLA One, a modular vehicle architecture designed to consolidate five existing platforms into a single scalable structure and support more than 2 million units by 2035. The Amsterdam-headquartered automaker plans to launch the platform in 2027.
STLA One will cover the B, C and D segments and is designed to support multiple powertrains, with what Stellantis describes as a per-energy modular approach intended to optimize efficiency for each propulsion type rather than carrying compromises across all of them. The platform targets 20% cost efficiency, which Stellantis attributes to modularity by design and revised battery choices.
According to Stellantis, STLA One will be the first of its platforms to integrate STLA Brain, STLA SmartCockpit and steer-by-wire technology. The company says this combination will support faster feature rollouts while allowing each of its brands — which include Abarth, Alfa Romeo, Chrysler, Citroën, Dodge, DS Automobiles, FIAT, Jeep, Lancia, Maserati, Opel, Peugeot, Ram and Vauxhall — to tailor the customer experience.
“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,” says Ned Curic, chief engineering and technology officer at Stellantis.
The platform forms part of a wider consolidation push. By 2030, Stellantis is targeting 50% of its volume to be built on three global platforms, with up to 70% component reuse — a strategy the company says is aimed at shortening time to market, strengthening supplier stability and improving cost efficiency. STLA One itself is designed to grow into what Stellantis calls a mega platform, supporting more than 30 models.
On batteries, Stellantis says it will scale up its use of lithium iron phosphate (LFP) chemistry on STLA One to improve affordability and reduce exposure to critical raw materials. The platform will also use cell-to-body integration, with the battery built into the vehicle structure to cut cost, weight and complexity and optimize embedded energy.
STLA One will be 800V-capable. Stellantis says the higher voltage architecture will deliver competitive charging times and improve the real-world BEV experience, though no specific charging rates or vehicle-level range figures have been disclosed at this stage.
The company frames STLA One as part of a broader effort to align hardware and software on a shared technology stack and close the cost gap with what it describes as best-in-class players operating in Europe.
