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US Tariffs Rewire North American Auto Investment, Stalling New Plants in Mexico and Prompting Price Hike Plans

Automakers face steep US duty bills of $200 million to $850 million a month that are eroding profits.

Overview

  • An S&P Global Mobility briefing says roughly $50 billion in US-focused auto projects were announced in 11 months, compared with $40 billion Mexico attracted over a decade.
  • Traditional volume brands are not planning fresh near‑term capital for Mexico, and production there is now projected to hold near 3.0 to 3.5 million vehicles a year rather than returning to about 4 million.
  • Manufacturers are reconfiguring output toward the United States, with examples including General Motors shifting volumes and, per local media, cutting a third shift with about 800 layoffs in Ramos Arizpe, and Stellantis moving some production north.
  • Companies have begun a global cycle of price adjustments since July–August to offset tariffs after keeping US sticker prices up only 1%–2% so far, and some are eyeing third markets such as Thailand to help subsidize costs.
  • Mexico’s industry and the Economy Ministry are pushing to preserve PROSEC and the ‘Regla Octava’ preferential import programs to keep parts flowing, alongside a supplier push that includes a reported $5.25 billion purchase order for Mexican vendors.