Overview
- The additional 25% duty on Class 3–8 trucks now applies at entry, bringing total tariffs on those vehicles to about 50%, and a new 10% duty applies to buses.
- Vehicles that qualify under USMCA are assessed only on their non‑U.S. content after application to CBP, while buses receive no carve‑out and are charged the full rate.
- Medium‑ and heavy‑duty parts with USMCA treatment are temporarily exempt until CBP establishes a system to calculate non‑U.S. content, with a 3.75% offset available for qualifying parts tied to U.S. assembly from 2025 to 2030.
- The White House states these measures do not stack with existing tariffs on steel, aluminum, copper, automobiles, or with reciprocal actions targeting products from Canada, Mexico, Brazil, or India.
- Japan joins Mexico and Canada among affected suppliers, with Japan accounting for roughly 19% of U.S. imports of 5–20 ton diesel trucks in 2024, according to JETRO data.