Trump's 25% auto tariff threat resurfaces

Cars are the center of this story — and the stakes are bigger than just car prices. Donald Trump’s old threat to push South Korean tariffs back up to 25% suddenly looks more real because he is now using trade pressure and alliance pressure at the same time. The immediate trigger is the Iran war fallout and Trump’s new move against Europe. But the real issue is whether Washington is starting to treat tariffs as a tool for disciplining allies, not just competitors. ### What changed this week? The new development is not a fresh Korea tariff order — at least not yet. The change is that Trump moved against Europe on two fronts at once: troop cuts in Germany and a return to 25% tariffs on EU passenger cars and trucks, with Seoul Economic Daily arguing that South Korea could feel less like bluster and more like a template. ### What exactly was the January threat? On January 26, Trump said he would raise tariffs on South Korean autos, pharmaceuticals, lumber, and other reciprocal tariffs from 15% to 25%. He tied that threat to a stalled Korean legislative process around the July 30, 2025 U.S.-Korea trade deal and the related $350 schedule had not actually been changed yet. ### Why do autos matter so much? Because autos are the load-bearing export. A Congressional Research Service brief says automobiles and auto parts made up 37% of total U.S. goods imports from South Korea in 2024. So when people talk about “Korea tariffs,” cars are not one sector among many — they are the sector that can really move profits, investment plans, and bilateral politics. ### Haven’t U.S. auto tariffs already gone up? Yes — and that is what makes this confusing. Trump already announced 25% tariffs on imported automobiles and certain parts in March 2025 under Section 232 national-security authority. The current Korea story is about a separate threat to restore or maintain a 25% level in the bilateral U.S.-K there are overlapping tariff tracks now, which makes the policy risk harder for companies to model. ### Who gets hit first if 25% sticks? Hyundai, Kia, suppliers, and GM Korea. One Seoul Economic Daily estimate put Hyundai Motor Group’s potential annual hit at 8.4 trillion won if the 25% tariff is imposed, with operating margin falling from 9.7% to 6.3%. The same report said GM Korea could face costs around 6 trillion won — brutal for a business already far smaller and more exposed to U.S. exports. ### Why link this to Iran at all? Because the pattern matters more than the headline. Seoul Economic Daily’s point is that Trump has been openly weighing allies’ security cooperation — including around the Strait of Hormuz — while also reviving tariff pressure. If that reading is right, then trade policy stops, it's a very different game. ### Is this definitely happening? No. That is the important restraint here. The January move was a threat, not a completed tariff-schedule change, and the latest Korea piece is really about rising risk after Europe got hit. But markets and companies do not wait for legal finality when a president has already shown he is willing to swing first and sort out the paperwork later. ### So what’s the bottom line? The story is not just “Trump might tax Korean cars again.” It is that a 25% tariff has resurfaced as part of a broader pressure model — one where security dependence and export dependence can be squeezed together. For Seoul, that means the vulnerability is no longer only economic. It is strategic too.