On May 28th, BYD held a press conference in Shenzhen, announcing it will assume full responsibility for the safety of its urban pilot systems for one year, becoming the world's first automaker to offer such a guarantee for urban navigation.
At the event, BYD founder Wang Chuanfu stated, "Technology can compete to be the best, but safety must be a shared commitment." Following BYD's pioneering commitment to underwrite its advanced driver-assistance systems, the industry has been abuzz with speculation about which company might be the second to follow suit. However, nearly half a month has passed without any other automaker announcing a similar policy.
This phenomenon is relatively rare in the history of driver-assistance technology development. Over the past few years, China's auto industry has engaged in fierce competition around these systems. At every significant milestone, companies have raced to keep up—whether it was opening up cities in the era of high-definition maps, achieving nationwide operability without maps, or iterating on technical approaches like end-to-end or parking-to-parking systems. Whenever one automaker launched a feature, others quickly followed; even those temporarily lagging behind would typically provide a timeline to avoid falling out of the race.
While this rivalry has been intense, it has objectively benefited consumers and propelled industry progress. Yet, on the issue of assuming full liability for driver-assistance systems, despite considerable attention from media and the public, automakers other than BYD have collectively remained silent, with even few executives from rival companies discussing the topic on social media.
As driver-assistance technology has evolved, user concerns have become quite specific: whether the system is user-friendly is one matter, but who is responsible when something goes wrong is another. Many automakers have historically been adept at touting technical capabilities, but once users are actually navigating city streets, they often care more about the boundaries of responsibility for the assisted driving function than abstract parameters. In today's automotive landscape, BYD's guarantee is a significant and hard-won commitment.
The Guarantee Is Not Just Marketing; Following Suit Is Difficult
For manufacturers, offering such a guarantee is far more than a marketing slogan; it is an exceptionally complex challenge.
The first challenge is whether the technical risks of urban pilot systems are manageable. Urban navigation deals with open roads, not just highways or expressways. Pedestrians, non-motorized vehicles, temporarily parked cars, lane cutting, construction zones, irregular intersections, and unprotected turns—any scenario can become a risk point. If an automaker's own technology is not up to par, it simply cannot afford to offer such a guarantee.
The second challenge is whether a company has accumulated sufficient data. Data can both improve the driver-assistance system through product iteration and help the automaker calculate the potential costs of the guarantee. This requires a clear understanding of usage frequency, accident probability, compensation scale, and after-sales service costs. Without enough data, offering a guarantee would be a shot in the dark.
The third challenge is whether the organizational structure can withstand the pressure. Previously, when accidents occurred, owners typically relied on insurance, and vehicle repairs might be handled by third-party shops. Once an automaker guarantees its driver-assistance systems, it must have responsive customer service, vehicle damage assessment, after-sales repair, and legal and risk control systems in place to serve the owner directly. This kind of coordinated, multi-step process often requires extensive planning and rehearsal to finalize.
Beyond these three challenges lies an additional one: whether the intelligent driving solution is fully controllable end-to-end. Driver-assistance is not a single feature but a vehicle-level system engineering project. Every component, from hardware like sensors, computing platforms, and domain controllers to software algorithms and even the user interface, can impact the final user experience. A weak link in one area can cause the entire system to fail.
Is an automaker's driver-assistance solution fully developed in-house, co-developed with suppliers, or purchased as a complete package from a supplier? If the automaker lacks its own R&D capability for these systems, when a liability accident occurs, the owner will turn to the automaker, who can only then turn to the supplier for help. In such a scenario, blindly offering a guarantee would become a bottomless pit for the automaker.
Why is BYD Willing to Take the Risk? Confidence Stems from Scale, In-House R&D, and Integrated Systems
The "3+1" complex challenges mentioned above may be difficult for other automakers, but BYD appears to handle them with relative ease.
First, regarding core driver-assistance technology, BYD's "Tianshen Zhiyan" (God's Eye) system has undergone multiple iterations and is now highly mature in both functionality and user experience. BYD's driver-assistance R&D team exceeds 5,000 people, a scale that is already industry-leading. This provides a solid technical foundation for BYD's willingness to offer the guarantee.
Second, there is the massive data accumulation. As of the May 28th press conference, BYD had over 3.15 million vehicles equipped with its driver-assistance systems on the road, generating more than 200 million kilometers of real-world driving data daily. The God's Eye system has reportedly helped users avoid 15.18 million potential collisions. This wealth of real-world data gives BYD the confidence to make the guarantee.
Next is the organizational system. BYD has been the top-selling Chinese automotive brand for several consecutive years, with a sales and service network covering the entire country, including vast third- and fourth-tier cities and county regions. According to a 2025 industry report on dealership development, BYD operates over 6,000 service outlets nationwide, ranking first in the industry. For a guarantee service to be implemented effectively, whether for damage assessment or repairs, it must rely on a physical network of service centers. BYD's extensive service network allows its guarantee to reach consumers immediately.
Finally, there is the capability for full-stack, in-house research and development in the driver-assistance domain, which is precisely BYD's strength. As early as 2024, BYD proposed its "Whole Vehicle Intelligence" strategy. The God's Eye system is described as not only having a smart "brain" but also a nimble "cerebellum." It integrates the vehicle's electronic and electrical architecture, the three-electric system (battery, motor, electronic control), chassis, and body control, allowing BYD to master the entire critical chain from vehicle architecture and algorithms to data, control, and mass production delivery. This enables BYD to avoid protracted disputes with suppliers and empowers it to make the guarantee commitment.
Therefore, BYD's guarantee to vehicle owners should not be seen merely as the launch of a new feature or benefit. It is a manifestation of BYD's comprehensive advantages in technology, data, scale, and industrial chain layout. The industry's lack of a swift follow-up恰恰 indicates that guaranteeing urban pilot systems is not an easily replicated slogan but the result of BYD's long-term strategic planning and sustained, deep cultivation.
For BYD itself, the guarantee for urban pilot systems can create a virtuous cycle. The guarantee may not only drive direct sales conversions but also increase the usage rate of these systems. This, in turn, allows BYD to accumulate even more real-world data, further enhancing the product experience. Taking BYD's previously announced guarantee for its intelligent parking system as an example, after the policy was implemented, the usage rate of that function reportedly increased from 21% to 93%.
In recent years, competition in the driver-assistance field has shifted from "who can make it work" to "who can make it work better." BYD's guarantee initiates the next phase of competition: "who can make users feel more confident in using it."
In today's automotive industry, parameters can be boosted, and features can be amplified, but responsibility is not something every company can easily shoulder. At least for now, BYD has set an example for the industry ahead of the anticipated arrival of the L3 autonomous driving era. In the future, perhaps more automakers will submit their own answers on the question of responsibility.
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