Most Canadian and Mexican vehicles are subject to a 25 percent tariff rate only on the non-U.S. content in them. U.S. content is defined in Trump's presidential proclamation as the value of parts "wholly obtained, produced entirely, or substantially transformed in the United States."

The U.S. tariffs on goods imported from Mexico and Canada will not be affected by the 90-day pause on tariffs announced by President Donald Trump on Wednesday, a White House official said.

President Donald Trump’s sudden change to tariff policy on Wednesday won’t affect the rates that currently apply Canadian and Mexican products, according to a White House official.