Overview

• President Trump announced the 25% tariff via Truth Social, now effective Nov. 1 after an earlier Oct. 1 start was delayed following industry concerns, and the move is tied to a national‑security review under Section 232.
• Officials have not clarified whether the new levy will stack on top of existing truck duties or replace them.
• Earlier U.S. measures already put a 25% duty on about 76.66% of trucks in HS 8704 and lifted the average heavy‑truck tariff to roughly 10.74% in July from near zero in January.
• Mexico supplies about 82.31% of U.S. heavy‑truck imports, and its exports to the U.S. fell 7.34% in the first seven months of 2025 after rising in 2024.
• Company exposure differs, with International/Navistar sourcing about 98% of its U.S. trucks from Mexico and Daimler roughly 83%, while Paccar and Volvo chiefly produce in the U.S.