Stellantis Poissy: industrial future confirmed with €20 million investment

For several months, uncertainty has loomed over the automotive landscape in the Paris region. The Poissy factory, a historic site and the last remaining car manufacturing plant in Île-de-France, has been the subject of alarming rumors. Amidst declining volumes and the industry's energy transition, fears of a permanent closure had taken root. However, a crucial meeting of the Social and Economic Committee (CSE) has shifted the narrative. Plant management has issued a firm reassurance: the Poissy factory has a long-term future. While the exact nature of vehicle production after 2028 remains to be defined, concrete investments have been confirmed, guaranteeing the site's sustainability.

A firm commitment to jobs and stability

This comes as a massive relief for the 2,000 employees at the site. During the extraordinary meeting held recently, Stellantis management delivered a clear message intended to put an end to speculation: "The Poissy factory will not close; we have made a commitment to give it an industrial future."

This official statement counters the darkest scenarios that had been circulating. The group has formally committed to no social plan (redundancy scheme). For the current workforce, this guarantees job security—fundamental news in a fluctuating economic context. The site, which currently produces the DS 3 and Opel Mokka, will continue operations with its current staff levels.

The significance of this announcement extends beyond the factory walls. As the only remaining car assembly plant in the capital region, Poissy is a strong industrial symbol. Management emphasized that this industrial future will be secured without negative impacts on current jobs. It is a victory for social dialogue and a recognition of the expertise of the Poissy teams, who have successfully adapted their production tools to Stellantis' requirements in recent years.

€20 Million to modernize and prepare for the future

Beyond verbal promises, Stellantis is backing its commitment with financial action. Management announced a significant investment of €20 million. This budget is specifically allocated for the modernization of the stamping lines. For context, stamping is the critical stage where metal sheets are pressed to form the vehicle's body parts.

This investment is strategic. Firstly, it upgrades the industrial tool to meet current quality and productivity standards. Secondly, as management indicates, this modernization "allows for a production commitment for over 20 years." This is a strong signal: companies do not invest such sums in heavy infrastructure for a site destined for short-term closure.

alongside this modernization, the Poissy site will diversify its activities. The group plans to develop complementary operations focused on the circular economy and the manufacturing of after-sales parts. Concretely, this could involve refurbishing used vehicles or extracting spare parts to supply the repair network. This shift towards the circular economy is a major trend at Stellantis, aiming to maximize the value of each vehicle throughout its lifecycle.

However, a significant nuance remains regarding the assembly of new vehicles. Production of the current models, the DS 3 and Opel Mokka, is secured until 2028. For the post-2028 period, no new vehicle allocation has been officially announced yet. We must wait until the first half of 2026 to learn the details of Stellantis' new strategic plan, to be presented by Antonio Filosa. It is only then that we will know if Poissy will continue to assemble cars or if the site will fully transition towards these new industrial and logistical activities.

Unions have welcomed this news with cautious optimism. For Brahim Ait Athmane of the Force Ouvrière union, this investment is a "first strong signal of the maintenance of industrial activity." Meanwhile, the CFE-CGC union sees these announcements as a step to "consolidate the industrial future," while requesting a rapid decision on the allocation of a future vehicle without waiting for the summer of 2026.

Rumors dispelled and a clearer horizon

The announcements made by Stellantis have cleared the fog surrounding the Poissy factory. For the employees, this marks the end of destructive rumors and a return to serenity. The guarantee that there will be no social plan and that activity is secured until at least 2028 is a significant victory.

Although questions remain about the exact nature of production in the next decade, the €20 million investment anchors the factory in the territory for the next twenty years. Whether it remains an assembly site or evolves into a hub of excellence for the circular economy and spare parts, the Poissy factory will endure. This is reassuring news for the French automotive industry and excellent news for brand enthusiasts who will see this historic site continue its journey.