BYD Launches 4-Nanometer Chip for Autonomous Driving on May 28

Chinese electric-vehicle giant BYD (1211.HK) unveiled an in-house 4-nanometer semiconductor designed for self-driving systems on May 28, 2026, escalating the technology arms race among EV manufacturers. The chip, intended for advanced driver-assistance features, represents a push toward vertical integration to reduce dependence on external suppliers like Nvidia or Qualcomm. BYD did not disclose specific production timelines or models that will first deploy the component, but the move aligns with its strategy to control core technologies and differentiate its mass-market offerings. The announcement comes as competition in China’s EV sector intensifies, with rivals including Tesla, Nio, and Xpeng accelerating their own autonomous-driving capabilities. BYD, the country’s largest new-energy vehicle maker, is leveraging its scale to absorb chip development costs and potentially improve margins on future vehicle lines.