Trump Imposes 25% Tariff on Mexican Trucks, Threatening USMCA Trade Relations and North American Supply Chains
08 October 2025

Trump Imposes 25% Tariff on Mexican Trucks, Threatening USMCA Trade Relations and North American Supply Chains

Mexico Tariff News and Tracker

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Listeners, today on Mexico Tariff News and Tracker, we have major developments regarding U.S. trade policy impacting Mexico. On October 6th, 2025, President Trump announced that starting November 1st, all medium and heavy-duty trucks imported into the U.S. will be subject to a 25 percent tariff. This announcement, made via Truth Social, signals a sharp escalation aimed at protecting American manufacturers from what Trump calls "unfair outside competition." Mexico, which supplies 82 percent of medium and heavy-duty trucks imported into the United States, is especially in the spotlight as these new tariffs directly target one of its most critical export sectors.

According to Mexico Business News, these new tariffs are set to take effect despite Mexico’s role as the U.S.’s main truck supplier. Previously, under the United States-Mexico-Canada Agreement (USMCA), trucks meeting a 70 percent regional value content threshold could move tariff-free between the parties. Now, with the introduction of Section 232 tariffs, there is widespread uncertainty over whether USMCA-compliant trucks will continue to benefit, or if the new tariffs will override existing duty-free provisions. Many industry watchers are warning of reduced demand from American customers, higher prices, and potential disruption to Mexico’s automotive supply chains and labor markets.

Barnes Richardson & Colburn LLP reports that while Trump's social media post is not itself legally binding — he had previously proposed an October 1st tariff start date — the administration’s intent is clear and importers should expect these duties imminently. The firm also notes the possibility of broader impacts as related legal and trade questions remain unresolved, specifically how qualifying USMCA trucks will be treated and what exemptions could be possible.

The global tariff environment is also shifting. S&P Global Ratings released its October 2025 tracker showing that overall, Mexico now faces an average statutory tariff rate of about 7.5 percent when accounting for USMCA duty-free imports, up significantly from previous years.

The mood in Washington adds to the uncertainty. The Business Journal reports President Trump has shown ambivalence toward the future of the USMCA, openly suggesting that the U.S. could renegotiate the agreement or pursue new bilateral deals. This posture has led to a wave of concern among policymakers and business leaders in Mexico, especially given mounting evidence that Trump's administration is willing to let uncertainty over trade linger as leverage for future negotiations.

As Mexico and the U.S. brace for this dramatic policy shift, all eyes are on the possible revisions to USMCA and how the sector-specific truck tariffs will impact North American supply chains in the coming months. Stay tuned for more updates as the story develops.

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