Elon Musk’s two flagship companies, Tesla and SpaceX, face a fundamental obstacle to any potential merger: Tesla’s deep entanglement with China. The electric-car maker operates a giant factory in Shanghai, sources batteries and components from Chinese suppliers, and sells tens of thousands of vehicles annually inside the country. Those ties, according to people familiar with the matter, create serious national security and regulatory hurdles that would make a combination with SpaceX — a major U.S. defense contractor — extremely difficult, if not impossible.
The China factor
Tesla’s presence in China is not just a sales channel; it’s a manufacturing and supply-chain anchor. The company’s Shanghai Gigafactory produces vehicles for both the Chinese market and export. That means Tesla shares technical data, software, and potentially vehicle telemetry with Chinese authorities as part of normal regulatory compliance. SpaceX, meanwhile, builds rockets and satellites for the U.S. military and intelligence agencies. Any corporate structure that gives Chinese regulators even indirect access to SpaceX’s technology or operations would trigger alarms in Washington.
National security hurdles
U.S. national security regulators have grown increasingly wary of foreign influence over critical defense suppliers. SpaceX holds contracts with the Department of Defense and the National Reconnaissance Office. A merger with a company that has substantial operations in China would almost certainly face a lengthy review by the Committee on Foreign Investment in the United States. That panel can block deals or force divestitures if it finds a threat to national security. Even a partial ownership structure or a holding-company arrangement might not satisfy concerns about Chinese government leverage over Tesla’s supply chain.
Regulatory roadblocks
Beyond national security, the merger would run into a thicket of other regulations. Tesla is subject to Chinese laws that require data localization and technology transfer in certain sectors. SpaceX is subject to U.S. export controls under the International Traffic in Arms Regulations. Combining the two would create a compliance nightmare. Lawyers who have worked on cross-border defense deals say the two regulatory regimes are fundamentally incompatible. One former CFIUS official described the situation as a “structural conflict” that no amount of mitigation measures could fully resolve.
What’s at stake
Musk has floated the idea of merging Tesla and SpaceX in the past, most recently during a 2024 all-hands meeting where he said the two companies share “a common mission” and could benefit from combined engineering talent. But investors and analysts have long viewed the China issue as a deal-breaker. Tesla’s Shanghai factory is its most productive plant, and the Chinese market accounts for roughly a third of its global sales. Untangling those operations would be costly and time-consuming. Keeping them separate while merging the rest might not satisfy regulators on either side of the Pacific.
The question now is whether Musk can find a structure that addresses the concerns — or whether the China ties will simply kill any merger talk before it gets serious. For now, the two companies remain independent, and the obstacles show no sign of easing.
