General Motors, Ford and other Detroit automakers are warning that proposed changes to North American trade rules could significantly increase vehicle-production costs, adding another layer of financial pressure to an industry already dealing with tariffs, expensive raw materials and major investments in new technologies.
The concerns center on negotiations over the United States-Mexico-Canada Agreement, or USMCA. The Trump administration is considering tougher rules governing how much of a vehicle must be produced in the United States and North America for automakers to qualify for preferential trade treatment.
According to Reuters, the proposed changes could require vehicles to contain at least 50% U.S.-made content while also increasing the existing North American content requirement above its current 75% threshold. Detroit automakers estimate that such changes could add at least $2 billion in annual costs per company.
The issue is particularly important because modern vehicles rely on highly integrated supply chains stretching across the United States, Canada, and Mexico.
Parts can cross borders multiple times before a vehicle reaches a dealership, meaning even modest changes to sourcing requirements could force automakers to redesign their supply networks.
For GM, Ford, and Stellantis, the challenge is finding a way to satisfy tougher domestic-content requirements without making vehicles substantially more expensive or reducing their competitiveness against foreign manufacturers.
Why the Proposed Rules Could Be So Expensive
The North American automotive industry was built around regional integration. Automakers use factories in the United States, Mexico, and Canada to manufacture vehicles and components based on labor costs, supplier capabilities, transportation infrastructure, and available production capacity.
That system allows manufacturers to produce vehicles more efficiently than if every component had to be sourced from a single country. The proposed changes could disrupt that model.
According to Reuters, the Trump administration is considering requiring vehicles to contain at least 50% U.S.-made content to qualify for favorable treatment under a revised trade agreement. The proposal would also increase the existing North American content requirement beyond 75%.
For automakers, meeting those thresholds could require shifting component production from Mexico or Canada into the United States.
In some cases, companies could need to find entirely new suppliers, invest in domestic factories, or modify existing manufacturing operations. Those changes would not happen cheaply.
A vehicle contains thousands of components, ranging from engines, transmissions, and batteries to wiring, electronics, seats, and smaller mechanical parts. Some components are themselves assembled from materials sourced from multiple countries.
Reconfiguring that supply chain would therefore involve more than simply moving a few factories.
GM is already facing substantial tariff-related expenses. Reuters reported that the company expects gross tariff expenses of approximately $2.5 billion to $3.5 billion this year. Ford expects a roughly $1 billion impact from tariffs.
Adding billions more in annual costs through stricter content requirements could make the situation considerably more difficult.
Automakers could ultimately pass some of those expenses on to consumers through higher vehicle prices. That would be particularly significant in a market where new-car affordability is already a major concern.
GM and Ford Face Different Supply-Chain Challenges
The proposed rules affect Detroit manufacturers differently because each company has developed its own North American production network.
Ford has increasingly emphasized domestic manufacturing as trade policy becomes more important to its business decisions. The company recently announced plans to shift production of Lincoln vehicles intended for U.S. customers from China to American factories beginning in 2030.
According to Reuters, that decision is consistent with the administration’s push for greater domestic manufacturing, although it also illustrates the significant cost involved in relocating production.
Ford CEO Jim Farley has previously described the United States, Mexico, and Canada as an integrated manufacturing system. In January, Reuters reported that Farley called a North American trade agreement “critical” to the automotive industry while arguing that the existing arrangement needed revisions. That position helps explain the dilemma facing Ford.
The company supports strengthening North American manufacturing but also depends heavily on cross-border production. Mexican factories are an important part of Ford’s regional manufacturing footprint, and forcing more production into the United States could raise costs significantly.
GM faces a similar challenge. The company has manufacturing facilities across all three countries and relies on suppliers operating throughout the region. Increasing U.S. content requirements could force GM to change sourcing arrangements that were developed over many years.
Stellantis is also exposed because brands such as Jeep and Ram depend heavily on North American manufacturing networks.
The companies therefore have a shared interest in making sure new trade requirements do not undermine the efficiency of the regional supply chain.
At the same time, the automakers must navigate political pressure to increase American manufacturing and reduce reliance on foreign components.
Foreign Automakers Could Gain a Cost Advantage
One of the biggest concerns for Detroit manufacturers is that stricter North American requirements could leave them at a disadvantage against foreign competitors.
According to Reuters, Japanese and South Korean automakers currently face a 15% flat tariff under their respective trade arrangements, giving them a potentially different cost structure from Detroit automakers dealing with higher regional-content requirements.
That creates a complicated competitive situation. GM and Ford can increase domestic content to satisfy tougher rules, but doing so could increase their production costs. Meanwhile, foreign manufacturers with different tariff arrangements could potentially maintain lower costs depending on where their vehicles and components are produced.
The Detroit automakers are therefore asking policymakers to consider the competitive consequences of the proposed rules rather than evaluating domestic content in isolation. The problem becomes even more complicated as Chinese automakers expand internationally.
Chinese manufacturers are increasingly competing with established automakers in Europe, Southeast Asia, and Latin America, using their advantages in batteries, electronics, and electric-vehicle manufacturing.
Although Chinese automakers have limited direct access to the U.S. passenger-vehicle market because of trade barriers, their growing global presence puts additional pressure on traditional manufacturers to control costs.
For American companies, higher manufacturing expenses could make it more difficult to compete internationally.
The proposed USMCA changes could nevertheless encourage greater domestic investment. If manufacturers know that higher U.S. content will be required for favorable trade treatment, they may decide to build more component factories in the country.
That could create jobs and strengthen domestic supply chains over time. The question is how much consumers and automakers would have to pay for that transition.
The Trade Negotiations Could Reshape North American Auto Manufacturing
The current debate goes beyond individual vehicle prices. It could influence where automakers build factories, where suppliers invest, and how future vehicle platforms are engineered.
Automakers typically make manufacturing decisions years before a vehicle reaches production. A new vehicle program can require billions of dollars in factory investments and supplier contracts, meaning uncertainty over future trade rules can complicate long-term planning.
The companies also need to prepare for the growing role of electrification. Electric vehicles rely on different supply chains from traditional gasoline-powered vehicles, with batteries and critical minerals becoming particularly important. Governments in the United States, Canada, and Mexico all want to capture more of that economic activity.
Tighter North American content requirements could encourage automakers to increase regional production of batteries, electric motors, and other EV components. However, doing so could raise short-term costs at a time when manufacturers are already reassessing EV investments because consumer demand has not grown as quickly as expected.
GM, Ford and Stellantis are therefore facing several competing pressures at once: tariffs, stricter domestic-content requirements, EV investment, high labor costs and increasingly aggressive international competition.
According to Reuters, GM and Stellantis remain supportive of negotiations with Canada and Mexico, but Detroit manufacturers want the final agreement to maintain fair competition and avoid creating high costs.
The negotiations could also influence consumer prices. If manufacturers cannot absorb additional expenses, higher costs could eventually appear in vehicle transaction prices. That could make already expensive trucks and SUVs even less affordable for American buyers.
On the other hand, supporters of tougher content requirements argue that stronger domestic sourcing could create more American manufacturing jobs, reduce dependence on foreign suppliers and make the industry more resilient against future trade disruptions.
The challenge for policymakers will be finding the right balance. The proposed changes represent a major potential shift in how North American vehicles are manufactured.
A requirement for at least 50% U.S. content, combined with a higher North American threshold, would encourage automakers to bring more production into the United States but could also undermine the integrated supply chain that has made North American vehicle manufacturing competitive.
For GM and Ford, the timing could hardly be more difficult. Both companies are already absorbing billions of dollars in tariff-related costs while restructuring their product strategies and deciding where to invest for the next generation of vehicles.
The final USMCA rules will therefore matter far beyond trade policy. They could determine where future vehicles are assembled, where their parts are produced and how much consumers ultimately pay for them.
For Detroit automakers, the objective is not simply to secure a trade agreement. It is to ensure that a more American-focused supply chain remains economically viable while allowing U.S. manufacturers to compete against global rivals.
The outcome of the negotiations could shape the structure of the North American auto industry for years to come.
