Complaints over OTA Battery Locking Surge; MIIT Summons 8 NEV Makers

Why It Matters

The crackdown signals tighter regulatory oversight that could reshape OTA strategies and restore consumer confidence in China’s electric‑vehicle sector, affecting both domestic sales and global supply chains.

Key Takeaways

• Over 12,000 OTA battery‑locking complaints recorded in March 2026
• Complaints rose 273% year‑on‑year, prompting MIIT action
• MIIT summoned eight NEV makers; three face investigations
• Two firms withdrew OTA restrictions and promised range restoration
• Unauthorized locking threatens consumer rights and could cost billions in savings

Pulse Analysis

The practice of OTA battery‑locking first entered public view after the 2021 WM Motor EX5 fire, when the automaker pushed a software update that limited charge capacity to curb overheating. While manufacturers claim such limits protect battery health and prevent fires, the financial incentive is clear: restricting performance reduces warranty claims and extends the usable life of costly battery packs. In a market where a single NEV can cost tens of thousands of dollars, even modest savings per vehicle translate into billions of dollars for large producers.

China’s Ministry of Industry and Information Technology has taken a decisive stance, issuing warnings to eight NEV makers and opening formal investigations into three firms accused of deploying unauthorized restrictions. The regulator’s actions reflect growing consumer backlash and a broader push for transparency in software‑defined vehicle features. By demanding that automakers disclose OTA changes and obtain explicit owner consent, MIIT aims to align the industry with existing consumer‑protection laws and prevent hidden cost shifts from manufacturers to drivers.

Looking ahead, the episode could accelerate the adoption of standardized OTA governance frameworks both in China and internationally. Automakers may need to embed clearer consent mechanisms, detailed changelogs, and third‑party audits to reassure buyers. For investors and suppliers, the shift underscores the importance of software compliance as a risk factor in the NEV value chain. Companies that proactively embrace transparent OTA practices are likely to gain a competitive edge, while those that resist could face fines, brand damage, and reduced market share as regulators tighten the reins on digital vehicle updates.