Chinese automaker BYD has officially filed a lawsuit against the U.S. government, challenging the legality of import tariffs imposed under former President Donald Trump’s trade policies. The action, filed on January 26, 2026 at the U.S. Court of International Trade in New York, is the first time a Chinese carmaker has legally contested these tariffs. BYD is seeking refunds for all levies it has paid since April 2025, when the Trump-era tariff regime began impacting its U.S. operations.
Four BYD subsidiaries are named as plaintiffs in the case: BYD America LLC, BYD Coach & Bus LLC, BYD Energy LLC, and BYD Motors LLC. Together, these subsidiaries represent BYD’s core operations in the United States, covering commercial vehicles, battery manufacturing, energy storage, and solar products. Although BYD does not sell passenger cars in the U.S., these segments have been subject to the tariffs and form the basis for the legal claim.
The defendants in the lawsuit include the U.S. federal government and high-ranking officials from agencies responsible for enforcing trade and tariff policies, such as the Department of Homeland Security, U.S. Customs and Border Protection, the Office of the U.S. Trade Representative, and the Treasury Department. BYD argues that these agencies exceeded their legal authority when imposing tariffs under the International Emergency Economic Powers Act (IEEPA). According to the company, the law does not explicitly authorize the imposition of tariffs or border taxes, and therefore the levy is unlawful.
BYD is seeking several remedies from the court. The company requests a declaration that the tariff orders are invalid, permanent injunctions to stop further enforcement, and full financial relief. This includes refunds for all tariffs collected under IEEPA, interest on these refunds, and reimbursement of legal costs incurred due to the levies. The lawsuit is not only aimed at stopping future tariffs but also at recovering funds already paid, protecting BYD’s financial interests in the U.S. market.
The legal move has wider implications for both the automotive and energy industries. Tariffs imposed under IEEPA have affected global supply chains and operations of foreign and domestic companies alike. Industry representatives suggest that BYD’s action may encourage other Chinese and international companies to use legal channels to challenge similar trade measures, rather than relying solely on diplomatic or political negotiations.
BYD’s U.S. presence is significant, with a manufacturing facility in Lancaster, California employing around 750 workers. The facility produces commercial trucks, buses, and energy products, contributing to local employment while navigating complex trade regulations. While former U.S. policies have raised concerns about Chinese competition, BYD’s investment reflects a growing trend of global automakers producing locally to avoid political and economic barriers.
The lawsuit, officially listed as Case No. 26-00847, reflects both a challenge to the legality of the Trump-era tariffs and a strategic effort to reclaim financial resources affected by those measures. If successful, it could set a precedent for other companies seeking relief from tariffs applied under emergency trade powers.
In summary, BYD’s legal challenge against the U.S. government highlights the evolving dynamics of international trade law and corporate strategy. By questioning the statutory authority of IEEPA and seeking refunds for levies paid, the Chinese automaker is taking a historic step that could reshape how foreign firms respond to trade-related barriers in the United States.