U.S. automakers are concerned about President Donald Trump's agreement to tariff Japanese vehicles at 15%, saying they will face steeper import taxes on steel, aluminum and parts than their competitors.

U.S. President Donald Trump struck a trade deal with Japan that lowers tariffs on auto imports and spares Tokyo from punishing new levies on other goods in exchange for a $550 billion package of U.S.-bound investment and loans.

The U.S. and Japan have reached a trade agreement under which the longtime U.S. will face a 15% tariff—down from a previously threatened 25%—President Donald Trump announced on Tuesday, as Japan’s Prime Minister hailed the move as a “new golden era” in the relationship between the two countries.