The European Union’s highest financial officials gathered in Brussels this week under the shadow of a looming trade war, as U.S. President Donald Trump escalated his threat to impose 25% tariffs on European-made cars and trucks—a move that risks unraveling the hard-won commercial agreement sealed between the two blocs just six months ago. The EU’s response, officials confirmed in closed-door meetings, is to invoke the same arsenal of retaliatory measures that once deterred Trump’s earlier expansionist gambits, including the specter of the bloc’s newly sharpened anti-coercion instrument, a legal tool designed to punish foreign governments for economic blackmail.
At the heart of the standoff is a dispute over the implementation of the July 2025 U.S.-EU Trade and Technology Agreement (TTTA), which Trump’s administration now claims the EU has deliberately sabotaged. The president’s trade representative, Jamieson Greer, accused Brussels of dragging its feet on regulatory adjustments demanded by Washington, including concessions on automotive emissions standards and supply-chain localization rules. “The EU agreed to modify key provisions, but so far, we’ve seen nothing but delays and legislative foot-dragging,” Greer told reporters ahead of his scheduled talks with European Commission trade chief Maros Sefčovič in Paris on Tuesday. The meetings, part of the G7 finance ministers’ gathering, mark the first direct engagement since Trump’s September 16 announcement of the tariffs, which are expected to take effect as early as next week.
The EU’s retaliation strategy hinges on two prongs: the immediate threat of suspended tariffs on $93 billion worth of U.S. Goods—including whiskey, motorcycles, and agricultural products—that were temporarily halted under the TTTA, and the activation of the anti-coercion instrument, which allows the bloc to impose sanctions ranging from export bans to restrictions on foreign investment. Although EU officials insist they have no intention of triggering a full-scale trade war, they are signaling that Trump’s latest move crosses a red line. “We are not seeking confrontation, but we will not tolerate coercion,” said Carlos Cuerpo, the EU’s deputy economic commissioner, in a statement released before Monday’s Ecofin meeting. “The agreement was reached in good faith, and if one party unilaterally walks away, the other has every right to protect its interests.”
Lars Klingbeil, Germany’s finance minister, echoed the warning, framing the dispute as a test of European resolve. “Groenlandia was a wake-up call,” he said in an interview with Handelsblatt, referring to Trump’s 2023 attempt to purchase the autonomous Danish territory—a gambit that prompted the EU to mobilize its anti-coercion tool as a deterrent. “We learned then that bluffing has consequences. This time, we are prepared to act if necessary.” The reference to Groenlandia is deliberate: when Trump first floated the idea of buying the Arctic territory, the EU’s threat to deploy the anti-coercion instrument—paired with the suspension of TTTA-related tariff exemptions—forced the U.S. To back down without a single sanction being imposed. The instrument, finalized in 2024, was designed precisely for such scenarios, allowing the EU to respond to “economic coercion” without violating WTO rules.
Yet the legal landscape for Trump’s tariffs remains murky. In February 2025, the U.S. Supreme Court struck down Trump’s previous attempt to impose broad-based automotive tariffs, ruling that his administration lacked the authority to unilaterally impose such measures under existing trade laws. Legal experts consulted by the Financial Times suggest that the new tariffs could face similar challenges, particularly given that the TTTA explicitly prohibits unilateral trade restrictions between the two blocs. “The president is walking a legal tightrope,” said Robert Lighthizer, a former U.S. Trade representative and Trump ally. “If the courts find this move unlawful, it could set a dangerous precedent for his own authority.”
Adding to the complexity, Trump’s tariff threat coincides with a broader diplomatic rift between Washington and Berlin. This week, the White House signaled it was “reconsidering” the deployment of U.S. Troops in Germany—a decision widely seen as retaliation for Friedrich Merz, Germany’s chancellor, publicly criticizing Trump’s Iran policy. While the EU has not directly linked the automotive tariffs to the troop withdrawal, officials in Brussels acknowledge that Trump’s actions are part of a broader pattern of instrumentalizing trade as leverage in unrelated geopolitical disputes. “This is not about cars,” said Pascal Canfin, chair of the European Parliament’s trade committee. “It’s about signaling weakness.”
The EU’s diplomatic response is being coordinated with unusual urgency. On Monday, the European Commission’s legal service issued a statement reaffirming that any U.S. Tariffs would violate the TTTA and could trigger “immediate and proportionate measures.” Meanwhile, France’s finance minister, Roland Lescure, urged restraint, warning that “escalation would harm both sides.” Yet behind closed doors, officials are privately debating whether to preemptively activate the anti-coercion instrument’s most severe measures, including a ban on U.S. Companies bidding for EU public contracts—a move that would directly target Trump’s political base in states like Ohio and Michigan, where automakers like Ford and GM have significant operations.
The next critical juncture arrives on Tuesday, when Greer and Sefčovič meet in Paris. If no breakthrough is reached, the EU has indicated it will move within 72 hours to reinstate the suspended tariffs, a step that would effectively freeze the TTTA’s implementation. “We are not bluffing,” said a senior EU diplomat. “The question now is whether the U.S. Is willing to pay the price for this gamble.” As of Monday evening, the White House had not responded to requests for comment on whether Trump would be open to negotiating a face-saving compromise—such as delaying the tariffs while the TTTA’s implementation is reviewed by an independent arbitral panel, as the EU has proposed.
