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Stellantis Announces STLA One Modular Platform for B‑to‑D Segments

The company says the design will cut costs about 20% by consolidating five legacy architectures into one to simplify production, support multiple powertrains, speed model rollout, support 800‑volt charging and enable integrated LFP batteries

Overview

  • Stellantis has unveiled STLA One, a single, modular vehicle architecture intended to replace five legacy platforms and cover B, C and D segment vehicles.
  • The company projects roughly a 20% cost reduction from the platform through parts reuse and a simplified production footprint.
  • STLA One is engineered for multi‑energy flexibility, offering separate energy-system layouts for combustion and electric powertrains so one setup does not carry inefficiencies for another.
  • Key technical features include 800‑volt capability for faster charging, first‑time integration of Stellantis’ STLA Brain electronics, STLA SmartCockpit, steer‑by‑wire and a battery approach using LFP cells with cell‑to‑body integration.
  • Stellantis plans STLA One to underpin more than 30 models and to reach about two million units by 2035 as part of a wider move to concentrate volume on three global platforms and increase component reuse.