Overview
- President Trump signed a Section 232 proclamation on Oct. 17 that takes effect Nov. 1, levying 25% tariffs on Class 3–8 trucks and truck parts and 10% on imported buses.
- USMCA-compliant trucks will be charged tariffs only on their non‑U.S. content, and USMCA-compliant truck parts are temporarily exempt until Commerce and CBP set a process to assess non‑U.S. content, while buses face the full 10% rate.
- The order extends the auto import‑adjustment offset through 2030 at 3.75% of a U.S.-assembled vehicle’s MSRP and creates comparable 3.75% offsets for medium‑ and heavy‑duty truck manufacturers, plus a parallel program for engine makers.
- The White House cites national security and supply‑chain resilience for the action and says products covered by this proclamation will not be subject to other sectoral tariffs on steel, aluminum, copper, autos and parts, or lumber.
- The steps follow months of industry lobbying, and analysts estimate auto and parts tariffs have cost U.S.-based automakers at least $10 billion through October, while business groups warn of higher prices and supply‑chain complications.