President Trump announced a new 25% tariff on imported vehicles and parts not assembled in the U.S., starting April 3. The tariffs will impact major auto-producing countries like Canada, Mexico, South Korea, Japan, Germany, Italy, and Britain. The move is based on a national security investigation, claiming imported cars erode the U.S. industrial base. The tariffs will apply to finished vehicles and automotive parts, with a partial exemption for vehicles complying with USMCA rules of origin.