WashingtonThe US banned Chinese vehicle software March 17.
Most of the world now runs that software, electric vehicle markets converging on China’s stack.
The divergence sets up incompatible export markets as China’s standard hardens globally.
Sources: Rest of World
WHY SOFTWARE IS THE STANDARD
Modern EVs are defined less by the battery than by the software stack: the battery management system, over-the-air update channels, charging protocols, and the infotainment OS. Whoever sets these standards captures the long tail of vehicle revenue — subscriptions, diagnostics, fleet telemetry — for a decade after the sale.
THE CHARGING PROTOCOL FORK
Three connector standards compete globally: China's GB/T, Europe's CCS2, and Tesla's NACS (now adopted across North America). GB/T dominates by sheer volume — China sold more EVs in 2024 than the rest of the world combined — and most emerging markets default to whichever standard their imported fleet uses.
THE GALAPAGOS RISK
Japan's mobile industry coined the term garakei — galapagos phone — for handsets that were technically excellent but built to domestic standards no one else used. When the iPhone arrived, Japanese makers had no export market to retreat to. Standard-setting is a winner-take-most game; the loser does not get a smaller share, they get an island.
WHAT THE MARCH 17 RULE ACTUALLY BANS
The Commerce Department's final rule prohibits import or sale of connected vehicles with Chinese-developed Vehicle Connectivity Systems (the cellular/Bluetooth/Wi-Fi stack) from model year 2027, and Automated Driving Systems from model year 2030. It applies regardless of where the car is assembled — a Volvo built in Sweden with Chinese telematics is covered.
THE EXPORT-MARKET SPLIT
Automakers that build to one standard cannot easily sell into the other. A vehicle certified for the Chinese stack — GB/T charging, Chinese map data, Chinese OTA servers — needs a parallel hardware and software variant for the US. Volume economics punish the smaller market, and the US is now the smaller market for EVs.
THE PRECEDENT
The US made a similar bet on Huawei in 2019, banning its 5G equipment and pressuring allies to follow. Europe partially complied; most of the developing world did not. Huawei lost its premium-market handset business but kept its global infrastructure footprint. The EV ban replays the same wager on a much larger industrial base.