China Unlocks Steer-by-Wire Future with New National Standard

SUZHOU, China – December 30, 2025 – China's automotive industry is on the cusp of a technological revolution with the official release of a new national standard that legally clears the path for vehicles without a physical steering column. The regulation, GB 17675–2025, effectively greenlights the mass adoption of Steer-by-Wire (SbW) technology, a move that promises to reshape vehicle design, enhance driving dynamics, and accelerate the transition to fully autonomous vehicles.

The new standard, set to take effect on July 1, 2026, was developed with significant input from industry leaders, including global motion control technology firm Nexteer Automotive, which sponsored a recent coalition meeting of the China Automotive Standardization Research Institute's specialized working group. This development provides crucial regulatory clarity for automakers and is expected to cement China's position as the world's leading market for SbW adoption.

A Regulatory Leap Forward

The most groundbreaking aspect of the GB 17675–2025 standard is its elimination of the long-standing mandatory requirement for a mechanical connection between the steering wheel and the road wheels. For decades, this physical link has been a non-negotiable safety feature. Its removal signifies a monumental shift in regulatory thinking, acknowledging that advanced electronics can now provide the necessary safety and reliability for critical vehicle functions.

However, this freedom comes with stringent new responsibilities. The standard places immense emphasis on functional safety and system redundancy, aligning with international benchmarks like the UN R79 regulation and the ISO 26262 functional safety standard. Manufacturers wishing to deploy full SbW systems must now prove their technology is "fail-operational," meaning the steering must remain functional even in the event of a component failure. This is achieved through multi-layered redundancy in sensors, electronic control units (ECUs), and steering actuators, ensuring a driver never loses control.

The regulation also mandates real-time system monitoring and clear driver warnings for any potential issues, such as reduced electrical performance, which could impact steering control. By establishing these robust safety protocols, the Chinese government has created a secure and predictable framework, giving original equipment manufacturers (OEMs) the confidence to invest heavily in and accelerate the deployment of this transformative technology.

Redefining the Automobile from the Inside Out

The implications of Steer-by-Wire extend far beyond the technical regulations. For drivers and passengers, the technology promises a fundamentally different in-cabin experience. The removal of the bulky steering column liberates vehicle interior design, paving the way for more spacious, flexible, and futuristic cockpits. Designers can now experiment with retractable steering wheels, reconfigurable dashboards, and layouts that optimize space and ergonomics, particularly important in the context of shared and autonomous mobility.

For the driver, SbW offers a more refined and customizable experience. Unwanted vibrations from the road surface are eliminated, creating a smoother ride. Furthermore, the steering feel and ratio can be adjusted via software. A driver could select a "comfort" mode with light steering for city driving and a "sport" mode with a heavier, more responsive feel for dynamic driving on open roads. This software-defined control is a cornerstone of the modern vehicle, allowing for over-the-air (OTA) updates that can continuously improve vehicle performance.

Perhaps most critically, SbW is a foundational technology for advanced driver-assistance systems (ADAS) and the pursuit of full autonomy. The system's rapid and precise electronic control is essential for features like automated lane-keeping, emergency steering maneuvers, and seamless transitions between human and machine control. As the industry moves toward Level 4 and Level 5 autonomous driving, a reliable by-wire chassis is not just an advantage—it is a prerequisite.

A Competitive Race in the World's Largest Market

With a clear regulatory path and immense technological benefits, the race to dominate China's SbW market is heating up. Industry analysts project the Chinese market for these systems to explode from an estimated 6.3 billion yuan (approx. $880 million) in 2025 to a staggering 37.6 billion yuan (approx. $5.2 billion) by 2030.

Nexteer Automotive, which has been an active member of the standard's working group since 2023, is strategically positioned to capitalize on this growth. The company's deep expertise in motion control and its collaborative role in shaping the technical and safety requirements underscore its influence. "Steer-by-Wire is a foundational technology for the future of vehicle motion control," said Geoff Krieger, Product Line Executive Director for SbW at Nexteer Automotive. "We are honored to contribute to the development of China's national SbW standards that will support safe, reliable and scalable adoption of SbW technology."

The company's established relationships with both global and domestic Chinese OEMs, including BYD, Xiaomi, and Li Auto, provide a strong foundation for future business. However, the competition is fierce. ZF Friedrichshafen AG is already supplying its SbW system for the NIO ET9, which stands as the first mass-produced vehicle in China to deploy the technology without a mechanical backup. Bosch's Chinese joint venture has also announced supply agreements with several local manufacturers.

The market is a dynamic mix of global giants and ambitious domestic players, including OEMs like NIO who were lead drafters of the new standard. This competitive pressure, combined with the clear regulatory support, is set to create a hotbed of innovation. The release of GB 17675–2025 is more than just a new rule; it is the starting gun for the next chapter of automotive evolution, with China firmly in the driver's seat.