In the hyper-competitive Chinese electric vehicle (EV) market, software is king, but a recent wave of controversy suggests it may also be a Trojan horse for consumer distrust. Allegations that eight of the industry’s biggest players—including BYD, Tesla, and NIO—were summoned by regulators for "locking" battery capacity via over-the-air (OTA) updates recently sent shockwaves through the sector. The China Association of Automobile Manufacturers (CAAM) and the named automakers have since issued a forceful collective denial, branding the rumors as AI-generated misinformation.
The term "battery locking" refers to a controversial practice where manufacturers use software updates to restrict a battery’s maximum charge or discharge speed, often without the owner's knowledge. While automakers argue these measures are essential safety interventions to prevent thermal runaway and extend battery longevity, consumers see it as a deceptive downgrade of the product they purchased. This tension highlights the growing pains of the "software-defined vehicle" era, where a car's performance can be altered long after it leaves the showroom.
The fallout from the recent rumors was exacerbated by a climate of heightened regulatory scrutiny. Earlier this spring, China’s Ministry of Industry and Information Technology (MIIT) and the State Administration for Market Regulation (SAMR) issued strict new guidelines governing OTA updates. These rules explicitly forbid "silent" upgrades and mandate that manufacturers obtain written consent before implementing any software that reduces battery capacity or vehicle performance.
Despite the debunking of the specific "summons" report, the underlying grievances of Chinese EV owners remain a potent force. Data from the national 12315 consumer platform shows a staggering 273% year-on-year increase in complaints related to OTA performance throttling. As the market matures, the ability of brands like Xpeng, Li Auto, and Geely’s Zeekr to manage the delicate balance between battery safety and transparency will likely determine their long-term brand equity in an increasingly crowded field.