“Increased import tariffs could lead to a smaller G.M., a reduced presence at home and abroad for this iconic American company, and risk less — not more — U.S. jobs,” General Motors wrote in its comment.

The tariffs would result in “broad-brush trade barriers that increase our global costs, remove a key means of competing with manufacturers in lower-wage countries, and promote a trade environment in which we could be retaliated against in other markets,” the company said.

General Motors pointed to other potential consequences, including “less investment, fewer jobs and lower wages” for its employees.

“The carry-on effect of less investment and a smaller work force could delay breakthrough technologies and threaten U.S. leadership in the next generation of automotive technology,” the company wrote.