72% of Surveyed U.S. Auto Suppliers Warn Losing CUSMA Duty-Free Trade Would Raise Costs or Disrupt Business

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For American automotive suppliers, the future of North American free trade is becoming a question of survival, competitiveness, and long-term investment. A new industry finding reveals just how deeply manufacturers depend on predictable trade across the United States, Canada, and Mexico.

In testimony delivered on October 14, 2026, MEMA, the Vehicle Suppliers Association, reported that 72% of respondents to its September poll considered CUSMA’s duty-free treatment extremely important and warned that losing it would materially increase costs or disrupt operations.

The warning comes as Washington seeks changes to the trade agreement rather than committing to its long-term extension. Although CUSMA remains in force, uncertainty is already complicating decisions about production, hiring, and investment across a highly interconnected automotive industry.

What the 72% Warning Actually Measures

The finding was presented by MEMA, the Vehicle Suppliers Association, during testimony before the U.S. International Trade Commission on October 14. The organization reported that 72% of respondents considered CUSMA’s duty-free treatment extremely important to their North American operations. Those respondents also expected its removal to materially increase costs, disrupt business operations, or both. It is a significant warning from companies involved in vehicle production, but it is not evidence that those disruptions have already occurred.

The results came from an invitation-based online poll conducted between September 16 and 28, 2026, among MEMA’s original-equipment and aftermarket executive members. Although the association represents nearly 900 supplier companies, its testimony did not disclose how many answered this particular poll. The distinction matters: 72% describes the respondents, not necessarily the entire U.S. automotive supply industry. Even with that limitation, the finding provides a revealing picture of how participating manufacturers assess their exposure to further trade disruption.

Nearly Half of Suppliers’ North American Revenue Is Tied to Cross-Border Trade

Modern vehicle manufacturing rarely follows a straight line from raw material to finished car. A component may be designed in Michigan, manufactured using Canadian materials, incorporated into a larger assembly in Mexico, and eventually installed in a vehicle destined for an American dealership. The efficiency of that arrangement depends on factories being able to exchange specialized parts without repeatedly confronting unexpected border costs. Changing the trade rules can therefore affect several production stages rather than a single shipment.

MEMA’s September findings offer a measure of that dependence. Respondents indicated that, on average, approximately 46% of their North American revenue was associated with products, inputs, or materials crossing a regional border at least once. This is an average among participating firms, not a calculation for the entire industry. Nevertheless, it helps explain why seemingly modest trade-policy changes can have disproportionate consequences. A tariff imposed on a frequently traded component may alter purchasing decisions, delivery schedules, inventory requirements, and the economics of production across multiple facilities.

CUSMA’s Duty-Free Benefits Come With Strict Conditions

CUSMA, known in the United States as USMCA, replaced NAFTA on July 1, 2020. Its automotive provisions were designed to encourage more manufacturing within North America while allowing qualifying goods to receive preferential tariff treatment. For passenger vehicles and light trucks, the agreement established a 75% regional value-content requirement, calculated under specified rules. Automakers also face North American steel and aluminum purchasing requirements and labour-value provisions that reward qualifying high-wage production.

Those obligations mean that duty-free treatment is not automatic simply because a part crosses the Canadian, American, or Mexican border. Businesses must demonstrate that goods meet the applicable origin rules and maintain the necessary documentation. Another complication is that separate trade measures can still apply: U.S. sector-specific tariffs on certain vehicles have affected the value of content produced outside the United States even when vehicles qualify under CUSMA. Preserving the agreement’s preferential treatment would therefore protect an important existing advantage without necessarily eliminating every tariff burden already facing the automotive industry.

Existing Tariffs Make the Warning More Urgent

The debate is unfolding in an automotive market that is already absorbing substantial trade barriers. In its April 2026 assessment, the Bank of Canada explained that CUSMA-compliant vehicles imported into the United States still faced a 25% tariff on content made outside the United States. Canada, meanwhile, maintained retaliatory duties on certain vehicles imported from America, with special treatment for qualifying regional content. For manufacturers planning production across the border, those measures mean trade preferences and actual landed costs are no longer always the same thing.

The distinction is particularly important for suppliers. Canadian government guidance indicates that CUSMA-compliant automotive parts are currently exempt from the U.S. 25% automotive-parts duty, even while some completed vehicles face separate charges. Other measures can affect industrial materials used to make those parts. Losing existing preferential access would therefore threaten to add another cost layer to a system already under pressure. But the exact bill would differ by product, origin, tariff classification, and contract. The 72% finding captures fear of further disruption, not a uniform price increase already imposed on every supplier.

Smaller Suppliers May Have the Least Room to Adjust

It is easy to imagine a multinational automaker reshuffling orders among factories. That option is far less straightforward for a specialized parts company with limited staff and one major production line. More than 60% of MEMA’s membership consists of small and medium-sized businesses, according to the association. Such firms may make narrow but essential components, from precision brackets to electronics housings, that larger manufacturers need on schedule. A sudden change in tariff treatment could force a business to renegotiate pricing while simultaneously deciding whether a long-standing customer relationship remains profitable.

The administrative burden is already considerable. In MEMA’s September 2026 findings, participating suppliers reported spending an average of 77 hours each month on CUSMA compliance. For Tier 1 suppliers, which typically sell directly to vehicle manufacturers, the figure exceeded 100 hours. Some smaller companies have only one or two employees responsible for trade-compliance work. Those hours involve documentation, sourcing information, and checks needed to establish preferential treatment. Additional regulatory changes would demand more attention from the very people also trying to keep daily production running.

An Indiana Factory Shows How Imports Can Support American Jobs

One example shared with U.S. trade officials challenges the assumption that buying from Canada or Mexico necessarily comes at the expense of American manufacturing. MEMA described an Indiana-based supplier serving the commercial-vehicle market in the United States and Mexico. Its business relies on selected inputs sourced from the two neighbouring countries, while important product design, engineering, and production work takes place in Indiana. The company has invested more than $20 million in U.S. plants and equipment, according to the association’s October testimony.

MEMA also said the supplier expected employment at its Indiana headquarters to rise by about 25% during 2026. That was the company’s reported growth expectation, rather than an independently confirmed final headcount. The example illustrates a practical reality: domestic investment and cross-border sourcing can reinforce each other. An imported input may make a finished American-made product competitive enough to win additional orders. If a new duty unexpectedly raises its cost, management could face difficult decisions about pricing, future equipment purchases, and hiring. Supporting U.S. jobs may require more than simply reducing the volume of parts crossing the border.

A Michigan Family Business Has Even More at Stake

MEMA’s second example involves a fourth-generation, family-owned automotive supplier based in Michigan. The company employs about 200 people across five U.S. facilities and reported growing by 25% between 2019 and 2025. It also sources roughly 85% of its raw materials from American suppliers, demonstrating a substantial commitment to domestic purchasing. Yet its growth depends on continued access to customers beyond the United States. At one Texas facility, buyers in Mexico account for nearly two-thirds of sales, according to the company’s account presented by MEMA.

The supplier has also invested more than $1 million in Michigan equipment and manufacturing capacity specifically to serve Canadian and Mexican customers. MEMA warned that losing access to the Mexican market could make the Texas operation economically unsustainable, potentially shifting business toward a competitor in Mexico. That outcome is a company-reported risk, not a verified closure announcement. Still, the numbers make the stakes tangible. A factory can buy most of its materials domestically, employ American workers, and remain highly dependent on neighbouring export markets. Trade barriers can threaten its sales even when its sourcing decisions favour the United States.

The Economic Record Shows Benefits and Trade-Offs

The scale of the American supplier industry helps explain why policymakers are paying attention. MEMA estimates that vehicle suppliers directly employ roughly 930,000 people in the United States and support another 4.8 million jobs across the wider economy. The association also pointed to U.S. automotive-parts production rising from $311.8 billion in 2019 to $349 billion in 2024, figures drawn from federal trade-commission research. In 2026, MEMA members have announced approximately $2 billion in new domestic investments. Those are significant numbers, although none proves that CUSMA alone caused every job or investment.

Independent government analysis presents a more complicated picture. In its 2025 review, the U.S. International Trade Commission modeled gains in production, employment, revenue, and investment for domestic parts and materials producers linked to CUSMA’s rules of origin. It also estimated modest negative effects for some American light-vehicle manufacturers and slightly higher vehicle prices. The overall impact on the U.S. economy was negligible in the model. In other words, the agreement’s benefits and costs are distributed unevenly. Suppliers can have powerful reasons to preserve the system without every participant experiencing precisely the same results.

Drivers Could Feel the Effects Through Higher Vehicle Prices

Tariffs are initially collected from importers, but that does not mean importers necessarily bear the entire economic burden. A parts manufacturer can absorb some of the expense, seek concessions from a supplier, or ask a customer to pay more. Automakers face similar choices when deciding how to price vehicles at dealerships. If a component becomes more expensive at several points in its production journey, the pressure can build before the finished car reaches a buyer. The result could be thinner manufacturer margins, higher sticker prices, or delayed investment rather than one predictable outcome.

There is evidence that automotive trade requirements already affect costs. The U.S. International Trade Commission found that most sourcing adjustments made to satisfy CUSMA’s origin rules increased production costs, although some reduced costs or made no difference. Its economic model also indicated a slight increase in average U.S. light-vehicle prices. A separate MEMA poll of 203 supplier executives in early 2025 found that 82% expected Mexican tariffs to harm their operations, while 68% expected harm from Canadian tariffs. Those were business expectations, not measurements of later consumer price increases.

Washington Has Declined an Extension, Not Ended the Agreement

The immediate political backdrop is serious, but the distinction between non-renewal and termination is essential. On July 1, 2026, the United States declined to extend CUSMA for a fresh 16-year term during the agreement’s scheduled joint review. The Office of the U.S. Trade Representative explicitly stated that the pact remained in force. Under its review provisions, the existing agreement is set to run until July 2036 unless the countries agree to extend it or an earlier withdrawal or termination occurs under the applicable rules.

That creates a prolonged period of negotiation rather than an overnight shutdown of regional trade. The governments are continuing discussions about trade terms, including automotive manufacturing, while the United States is gathering further public input. An October 2026 Federal Register notice opened a new consultation process ahead of the 2027 review, with written comments due January 12, 2027. For suppliers considering expensive equipment or long-term purchasing contracts, the legal distinction provides some reassurance, but not complete certainty. They still need to judge what rules will govern the products they intend to manufacture several years from now.

The Next Review Could Determine Where Factories Invest

The industry’s concern is not simply whether tariffs increase next month. Suppliers make tooling decisions, approve new vendors, and commit capital well before new models reach production. MEMA told trade officials that firms are still adjusting to the agreement’s tougher sourcing provisions, with final regional-content requirements for certain commercial vehicles scheduled for July 2027. Some specialized materials and inputs remain difficult to obtain at the necessary scale within North America. Rapidly tightening the rules could therefore leave businesses facing requirements they cannot immediately satisfy.

The U.S. International Trade Commission is preparing another assessment of CUSMA’s automotive rules, due by July 1, 2027. Meanwhile, MEMA has urged negotiators to preserve duty-free treatment for qualifying goods while pursuing targeted improvements that strengthen regional production. The challenge for Washington, Ottawa, and Mexico City is to make North American manufacturing more competitive without undermining the cross-border relationships that already sustain American factories. For the suppliers behind the 72% warning, trade stability is not an abstract diplomatic objective. It influences where equipment gets installed, which workers are hired, and whether the next production order stays in North America.

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