DIGITIMES observed that with the US federal government announcing a 25% tariff on imported automobiles and auto parts effective April 3, 2025, Taiwan's automotive supply chain industry faces unprecedented challenges, particularly affecting auto parts manufacturers significantly.
DIGITIMES conducted a detailed analysis of the new tax regulations and HTSUS tariff schedule, comprehensively assessing the impact on major Taiwanese manufacturers under the new US tariff policy. It was determined that three key variables would measure the extent of the impact: the proportion of revenue from the US market, the presence of local production capacity in North America, and whether products fall within the taxable list.
The focus of the new US tariff policy lies in its imposition of tariffs on as many as 130 HTSUS codes for auto parts, covering nearly all categories of automotive components. Furthermore, according to the provisions specified in the Federal Register, any auto part not compliant with the origin rules of the US-Mexico-Canada Agreement (USMCA) will incur a 25% tariff regardless of the exporting country. Notably, over 50% of Taiwan's exported auto parts are shipped to the US, making the impact particularly pronounced for Taiwanese manufacturers reliant on the US market.
Chart 1: Impact of 25% US tariff on vehicles and automotive components
Chart 2: Overview of the US tariff on complete vehicles and automotive components
Chart 3: Proportion of US imports of automobiles and components from trading countries, 2022-2024
Chart 4: Proportion of Taiwan's automotive component exports to trading countries, 2022-2024
Chart 5: Revenue of major Taiwanese auto parts manufacturers in the Americas, 2024 (NT$m)
Tong Yang's US revenue exceeds 40%, Texas plant mitigates tariff impact
TYC US revenue grows 46.8%, mass production set for 2026 in Detroit
Hota's US revenue tops 50%, factory delay heightens tariff risk
Excellence's America revenue surpasses 70%, Mexico plant to launch 2H26
Chart 10: Excellence Opto operating performance, 2022-2024 (NT$m)
Hiroca avoid direct US shipments, tariff impact estimated low
Global Tek faces 25% tariff risk with limited North America capacity
Chart 12: Global Tek operating performance, 2022-2024 (NT$m)
Mobiletron's US revenue share declines amid moderate tariff impact
Chart 13: Mobiletron operating performance, 2022-2024 (NT$m)
US tariffs on auto parts will cause revenue drop and production risks
Chart 15: US tariff influences on Taiwanese auto part manufacturers