China has introduced a groundbreaking national standard for passenger car braking systems, designated as GB 21670-2025, which is set to significantly impact the popular “single-pedal driving” mode used by several electric vehicle manufacturers, including Tesla. This new regulation, approved by the State Administration for Market Regulation and the Standardisation Administration of China, prohibits vehicles from defaulting to a single-pedal mode that allows deceleration to a complete stop solely by releasing the accelerator pedal.
The implementation of this standard will occur in phases, with most new vehicle type approvals required to comply by January 1, 2026. Specifically, the provisions concerning single-pedal mode will become effective on January 1, 2027. For vehicles already approved, the standard will apply from the same date in 2027.
Key Features of the New Standard
The new regulations bring several critical changes to the automotive industry, particularly affecting the design and functionality of electric vehicles (EVs).
Mandatory ABS Installation
One of the key mandates is the installation of Anti-lock Braking Systems (ABS) in all newly approved passenger vehicles. ABS is a well-established active safety technology that prevents wheel lock-up during emergency braking, thereby maintaining vehicle stability and control. This requirement aims to significantly reduce the risk of skidding and fishtailing, enhancing overall road safety.
Restrictions on Single-Pedal Mode
The regulations specifically target the energy recovery systems prevalent in new energy vehicles. By prohibiting vehicles from defaulting to a mode where releasing the accelerator alone can bring the vehicle to a complete stop, the standard aims to mitigate the risk of drivers developing a delayed reaction to the brake pedal in urgent situations.
Brake Light Activation for Energy Recovery
Another significant requirement is the activation of brake lights when the deceleration caused by energy recovery exceeds 1.3 m/s². This signal must remain active as long as deceleration is occurring, alerting following vehicles and other road users, thereby reducing the likelihood of rear-end collisions.
Implications for the Automotive Industry
Single-pedal driving, once heralded by Tesla’s Elon Musk as the “ultimate form of future driving,” simplifies the driving process by allowing drivers to control both acceleration and deceleration with a single pedal. This mode not only enhances energy recovery efficiency, extending the vehicle’s range, but also improves driving comfort, especially in congested urban traffic.
Beyond Tesla, other manufacturers such as Mercedes-Benz (EQ series), BMW (i3), Nio (ES6), and some Xpeng models have incorporated single-pedal mode as an option. However, safety concerns have emerged regarding this driving style. Long-term reliance on single-pedal driving can lead to delayed driver reactions and potential misapplication of pedals in emergencies. In situations requiring sudden braking, drivers accustomed to single-pedal operation might not react quickly enough to switch to the brake pedal, increasing the risk of accidents.
Tesla itself has acknowledged these concerns, having previously removed the mandatory single-pedal mode in its OTA 2023.2.13.1 update, giving users the option to choose.
Looking Ahead: The Future of EV Driving
This development follows a global trend of increasing regulatory scrutiny over electric vehicle technologies, as governments and safety bodies strive to balance innovation with safety. The move represents a significant shift in how EV manufacturers will design their vehicles for the Chinese market, which is one of the largest and most influential in the world.
According to industry experts, while the new standard may pose challenges for manufacturers, it also opens opportunities for innovation in braking technology and vehicle safety systems. As the automotive industry continues to evolve, the focus will likely remain on enhancing safety without compromising the efficiency and convenience that have become the hallmark of electric vehicles.
As the implementation date approaches, manufacturers will need to adapt their designs and educate consumers about the changes. The transition period will be crucial for both automakers and drivers to adjust to the new driving dynamics and safety features.
Ultimately, China’s new auto standard could set a precedent for other countries considering similar regulations, as the world continues to navigate the complexities of integrating advanced technologies with road safety imperatives.
