New Delhi, July 25 -- U.S. automakers worry that President Donald Trump's agreement to tariff Japanese vehicles at 15% would put them at a competitive disadvantage, saying they will face steeper import taxes on steel, aluminum and parts than their competitors.

"We need to review all the details of the agreement, but this is a deal that will charge lower tariffs on Japanese autos with no U.S. content," said Matt Blunt, president of the American Automotive Policy Council, which represents the Big 3 American automakers, General Motors, Ford and Jeep-maker Stellantis.

Blunt said in an interview the U.S. companies and workers "definitely are at a disadvantage" because they face a 50% tariff on steel and aluminum and a 25% tariff on parts and...