Tokyo is a close economic and strategic US ally, with its firms the biggest investors in the United States and one in 10 Japanese jobs connected to the auto sector.
The duties take effect at 12:01 am (0401 GMT) on April 3
Trump signed executive orders last week imposing new 25 percent tariffs on steel and aluminium, due to come into effect on March 12
Trump stunned markets with his decision on Monday to impose tariffs on all steel and aluminum imports beginning March 12
Trump sees tariffs as a way to raise revenue, remedy trade imbalances and pressure countries to act on US concerns
"There is no hesitation when it comes to defending our interests," Jean-Noel Barrot said
A roundup of Trump's trade-related steps and threats
He will announce the new metals tariffs on Monday
Beijing slaps 15% levy on US LNG, coal; 10% on crude, farm equipment
Trump has also hit China with a 10-percent tariff in addition to levies already in place.
US exports to Mexico accounted for more than $322 billion in 2023
China's commerce ministry slammed Washington's "erroneous practices"
Trump earlier signed an executive order imposing 25% tariffs on all goods from Canada and Mexico
