US automakers warn of multi-billion dollar costs from proposed trade rule changes

Major Detroit automakers, including General Motors, Ford, and Stellantis, are warning the Trump administration that proposed changes to the USMCA trade agreement could impose billions of dollars in annual costs. The companies are preparing to argue that stricter rules regarding North American component content will harm their competitiveness against manufacturers from Japan, South Korea, and Europe.

Key proposals under consideration include a requirement that vehicles contain at least 50 percent U.S.-made components to qualify for tariff relief, alongside a potential increase in the overall North American content threshold from the current 75 percent. Industry estimates suggest these changes could cost each major Detroit manufacturer at least $2 billion annually. General Motors has projected that tariff-related expenditures could reach between $2.5 billion and $3.5 billion this year, potentially impacting over 20 percent of its operating profit.

Automakers note a competitive disadvantage, as vehicles imported from Japan, South Korea, and Europe face a uniform 15 percent tariff, while imports from Mexico and Canada can face tariffs of approximately 25 percent. While the administration maintains that these measures aim to incentivize domestic investment and job creation, industry leaders warn that aggressive shifts in origin rules may force costly supply chain reorganizations and ultimately pass higher costs to consumers.