General Motors (GM) plans to halt production at five factories in North America and cut more than 14,000 jobs.
The US carmaker has also announced it will close three plants outside North America by the end of 2019.
The moves follow rising costs and slower car sales and as the firm focuses on its line-up of trucks, electric and self-driving vehicles.
But the restructuring drew swift criticism from politicians, including President Donald Trump.
I am not happy about it, he said of the plans, which undercut his claims that his policies are spurring a revival in the US auto industry.
The production cuts come as buyers in North America have turned away from smaller cars to bigger vehicles such as SUVs and trucks, which now make up nearly 70% of total US car purchases.