President Trump’s imposition of tariffs on all steel and aluminum imports could make it more expensive to produce cars in the United States, dealing another blow to automakers already facing the potential of rising steel prices because of other policies from his administration.
Top of mind for auto executives was the bid by the Japanese steel maker Nippon Steel to buy U.S. Steel. Many of them had hoped that Mr. Trump would be open to negotiating a deal to allow the acquisition to go ahead. Instead, the president confirmed last month that he opposed the proposed deal.
Many auto industry executives believe that the merger could have increased competition and supply in the American steel industry, ultimately lowering steel prices.
In the United States, U.S. Steel and Cleveland-Cliffs are the only major American producers of the high-finish steel favored by automakers. Cleveland-Cliffs has long sought to acquire its rival, but such a merger has raised concerns in the auto industry that it could create a monopoly, giving the combined company the power to raise prices.
By contrast, industry groups expected the proposed Nippon Steel deal to preserve competition in the market. The Alliance for Automotive Innovation, a trade group representing major U.S., Japanese, and European automakers, expressed support for Nippon Steel’s acquisition, saying that a Cleveland-Cliffs-led deal would result in “anti-competitive pricing of materials.”
Even after former President Joseph R. Biden Jr. rejected the deal in January, Nippon Steel continued efforts to revive it. Cleveland-Cliffs has recently indicated that it remains interested in bidding for the financially troubled U.S. Steel. Last month, Mr. Trump reiterated that U.S. Steel must remain American-owned, and said he would block Nippon Steel from taking a controlling stake in the company.
For automakers struggling with challenges such as rising competition from Chinese rivals, costly technological transitions, and signs of a slowdown in U.S. consumer spending, the new steel tariffs are expected to further squeeze profits. The 25 percent levies, which went into effect on Wednesday, are expected to cause steel prices in the United States to rise about 16 percent compared to prices in 2024, according to the research firm Wolfe Research.