Stellantis has launched development of STLA One, an advanced, modular vehicle architecture designed to accommodate various passenger vehicles. The upcoming vehicle platform will debut in 2027, as part of efforts to integrate and streamline current platforms into a scalable solution capable of serving over 30 models.
According to the company, STLA One will be compatible with gasoline, hybrid, and electric propulsion as well as accommodate new software and technology solutions for future vehicles.
What Is the STLA One Platform?
STLA One is the name of a modular vehicle architecture that will cater to B-, C-, and D-segment passenger cars. The architecture will replace five individual platforms currently in use at Stellantis.
The architectural design of the STLA One platform features modular interfaces that facilitate the integration of diverse propulsion types into a single vehicle, without requiring distinct designs for every powertrain system.
This approach has been adopted, according to the company, to enhance engineering efficiency and manufacturing effectiveness across Stellantis’ worldwide vehicle assembly plants.
By 2035, Stellantis aims to be able to produce more than 2 million cars annually using the new STLA One platform.
How Does Stellantis Plan to Cut Costs Using STLA One?
Cost efficiency is the cornerstone of the STLA One design. Stellantis claims that, through component and technology standardisation and scalable engineering, it aims to achieve a 20% improvement in efficiency compared to existing practises.
A part of this cost reduction plan is the reuse of components across different global vehicle assemblies. By 2030, the company plans to develop 50% of its total car assembly on three key platforms by reusing up to 70% of common components.
Which Technologies Will Be Available on STLA One?
STLA One is set to be the first Stellantis platform to offer a combination of several new technologies, such as:
STLA Brain software architecture
STLA SmartCockpit infotainment system
Steer-by-wire functionality
These solutions are meant to facilitate over-the-air software upgrades and enable quicker development cycles with greater flexibility when creating custom interfaces within Stellantis’ portfolio of brands.
STLA One will also feature an 800-volt battery architecture for its BEVs, enabling rapid charging and improved battery efficiency.
What Battery Technology Will STLA One Offer?
According to Stellantis, the platform will feature an array of batteries, with a greater focus on lithium iron phosphate (LFP). These batteries are considered more affordable and contain fewer critical minerals than other types, such as nickel-based batteries.
Another interesting feature of STLA One is the application of cell-to-body battery packs. This allows for integrating battery cells into the body of the car itself. According to the automaker, this technology enables lighter cars, lower manufacturing costs, and more efficient energy packaging.
What Makes the STLA One So Important for Stellantis’ Future?
STLA One is one of the components of the company’s strategy to create standardised hardware and software solutions. As Stellantis stated, it was developed to serve multiple purposes and can be applied to different types of vehicles.
Moreover, the development of this solution was motivated by Stellantis’ attempts to create a product that could help it become competitive in markets such as Europe, where many challenges exist due to the high cost of cars and the need to produce electric vehicles.
When It Will Arrive, Launch, and Production Plans
According to the plans shared by Stellantis, STLA One will be launched in 2027. The automaker did not provide information about which models will use the platform for their manufacturing.


