US auto industry sees modest gains, supplier investment plunges under Trump tariffs

President Donald Trump's claim of a "roaring comeback" in US auto manufacturing is viewed by analysts as a mixed result, with modest gains offset by trade policy uncertainty and significant strain on suppliers. Automakers like GM, Toyota, and Ford have announced US plant expansions and production shifts due to tariffs, but gains are incremental. Supplier investment plunged from over $8 billion to around $600 million in 2025, with nearly 80 percent of companies citing trade policy as a top threat. US auto employment rose to nearly 1.8 million workers in September 2026, up slightly since January 2025 but below 2024 peaks. Production is expected to remain stable until around 2030, with suppliers shifting investment toward automation amid a "discipline-over-growth" approach.