US Bans BYD Vehicles at Japan's Kadena Air Base Over Spy Risk

The US military has banned all vehicles made by Chinese EV maker BYD from Kadena airbase on Okinawa, calling the risk to personnel and mission "unacceptable." The restriction took effect this week at America's biggest air force base in East Asia, and it applies to everything from privately owned cars to taxis and delivery vehicles.

Security personnel at the base's gates have been instructed to block BYD vehicles and turn drivers around, according to reports. The US military in Japan confirmed the move on Tuesday.

"These vehicles present an unacceptable and unmitigable risk to our personnel and our mission," Lieut Col Alli Stormer, a spokesperson for the US air force 18th Wing at Kadena, said in a statement.

Why Kadena matters

Kadena isn't just another base. It would be directly involved in responding to any crisis involving China, Russia or North Korea. Its inventory includes the Typhon missile system, which is said to be capable of firing Tomahawk missiles as far as 1,600km — putting parts of China and Russia within striking distance. The base also hosts fighter planes and aircraft used for mid-air refuelling, surveillance and reconnaissance, according to its website.

That profile explains the sensitivity. South Korea's Yonhap news agency reported that the concern centers on potential information leaks via vehicle-mounted technologies such as cameras, sensors and GPS devices. Military officials have not identified a specific threat.

What does this change for BYD and other Chinese tech firms?

For practitioners, the practical question is whether this spreads. The Kadena ban has fueled speculation that similar measures could follow at other US military facilities, as Washington widens its crackdown on Chinese technology it suspects of collecting sensitive information.

The precedent is already there:

• In June, the Pentagon added BYD to a list of 188 Chinese firms it believes have ties to the country's military, drawing a protest from Beijing. The blacklist also includes automaker Nio, e-commerce firm Alibaba and internet company Baidu.
• In 2018, the US defence department banned the sale and use of Huawei and ZTE smartphones at military bases worldwide, again citing security concerns.
• China has played the same game: in 2021, it barred US-made Tesla vehicles from some government compounds over security concerns about their cameras. Beijing lifted that restriction in 2024 after Tesla won an endorsement from the country's top auto industry association.

The Kadena move is part of a broader push by the US and other western countries to restrict Chinese smart technology in vehicles, mobile phones and other devices they fear could be used to "spy" on their owners.

The timing stings for BYD

BYD overtook Tesla as the world's biggest seller of battery-electric vehicles in 2025, and it's now pushing hard overseas. Japan — the world's fourth-biggest auto market — is a key battleground. In July, BYD launched its Racco electric minicar there, betting that a small, cost-efficient vehicle could carve out space in a market dominated by domestic brands.

BYD has not immediately responded publicly to the Kadena ban.

For a company trying to build consumer trust in Japan, having its vehicles physically turned away at the gates of the region's most important US installation is more than a symbolic setback. If other bases follow Kadena's lead — and the Huawei precedent suggests they might — BYD could face a patchwork of restrictions across US facilities abroad, complicating sales to the very communities, from service members to base contractors and delivery fleets, that an automaker expanding in Japan would want to reach.