What The Heck Is Going On With OTA Cuts To EV Range In China?

Electric vehicle owners in China have reported a puzzling reduction in their cars’ advertised range following over-the-air (OTA) software updates. Some vehicles initially capable of travelling around 500 km on a full charge saw their range drop to approximately 300 km after these updates, alongside slower fast-charging times increasing from 40 to 70 minutes. This practice, referred to as “battery locking,” involves manufacturers altering battery management systems via software upgrades without clearly informing customers, effectively limiting charging capacity and discharge power. The rationale provided by automakers for battery locking is to optimise battery health and mitigate risks such as spontaneous combustion. However, this approach comes at the expense of vehicle performance and user experience, prompting a surge in consumer complaints on platforms like Black Cat Complaints. Despite widespread speculation, the identities of the manufacturers involved remain unclear, with conflicting reports about whether multiple companies have been investigated or summoned by Chinese authorities. The China Association of Automobile Manufacturers has denied claims of formal investigations, adding to the uncertainty. In response to these concerns, Chinese regulators have introduced new rules governing OTA updates for electric vehicles. Issued by the Ministry of Industry and Information Technology and the State Administration for Market Regulation in March, these regulations explicitly prohibit undisclosed battery locking, forced silent updates, and the use of OTA software to circumvent vehicle recalls. This regulatory move suggests that the issue was significant enough to warrant official intervention, although details about the extent of the problem and the companies responsible remain scarce. The controversy highlights the challenges of balancing battery safety, vehicle performance, and transparency in the rapidly evolving Chinese EV market. While battery locking may offer technical benefits, the lack of clear communication with consumers risks undermining trust in electric vehicles. As the industry adapts to these new regulations, greater clarity and accountability will be essential to maintain confidence among EV owners and support the continued growth of electric mobility in China.