BYD's Intelligent Driving System: Reduces the rate of serious accidents to 1 in 6.
Data from nearly 3 million BYD vehicles shows that driver-assistance technology reduces the risk of serious accidents by about 16% compared to traditional drivers. The Chinese electric vehicle giant is accelerating the integration of AI and the Xuanji architecture to optimize safety across all its models.
BYD has just released real-world safety data from its driver assistance system, which has been deployed on over 60 models across nearly 3 million vehicles. According to the report, the rate of serious accidents in these vehicles has dropped to just one-sixth of the rate under human driving conditions. This result is calculated based on actual airbag activation incidents per 10 million kilometers of operation.
Deploying driver assistance technology on a large scale.
This information was presented by Mr. Yang Dongsheng, Senior Vice President of BYD Group, at the 13th Annual Smart Vehicle Connectivity Technology Conference in Shanghai. Mr. Yang stated that BYD began expanding the installation of intelligent driving assistance systems in early 2025. Currently, almost all of the company's passenger car models are equipped with Level 2 driver assistance systems.
Presentation data indicated that the user activation rate of the navigation-assisted driving system exceeded 50%, while the usage rate of the parking assist feature reached 86%. Notably, thanks to the parking assist system, minor scratches and collisions during reversing and parking were reduced to about one-fiftieth of those that occurred when the driver performed the task manually.
The Xuanji architectural foundation and the power of AI modeling.
BYD's system optimization capabilities are based on the Xuanji Architecture. This is a unified platform that combines the electronic architecture and electrification systems of the vehicle. The company uses cloud-based models and reinforcement learning to train simulations, with input data of up to 190 million kilometers of daily driving. BYD's current algorithm iteration rate is once every three days.
The system combines visual network detection capabilities with lidar. This combination allows the vehicle to accurately identify suspended obstacles or hollow structures in tight spaces, making parking and maneuvering safer in challenging situations.
Ability to respond under harsh operating conditions
In addition to everyday safety features, BYD focuses on handling emergency situations such as high-speed tire blowouts or driving on slippery surfaces (rain, snow). The company's intelligent electric platform can stabilize the vehicle in just 200 milliseconds through the coordinated operation of the engine and chassis. In test scenarios, stability during a tire blowout was successfully demonstrated at speeds exceeding 200 km/h.
The company's newly launched products, such as the updated Atto 3 and the upcoming Seal 08 sedan, all focus on deeply integrating intelligent driving technology and fast charging capabilities. The new Atto 3 in China has been upgraded with an additional 120 km of range according to CLTC standards.
Market data and usage performance
| Statistical indicators | Recorded value |
|---|---|
| Number of vehicles equipped with assistance systems | Nearly 3,000,000 vehicles |
| Reduction in serious accident rates | That's 1/6 of the driver's power. |
| Parking assistance utilization rate | 86% |
| Daily driving data is used to train the AI. | 190,000,000 km |
| Global electric vehicle sales (April 2026) | 314,100 vehicles |
As of April 2026, BYD recorded a 6.2% increase in sales compared to the previous month. Despite some fluctuations compared to the same period last year, the company maintained its leading position in popularizing active safety technologies in mass-market electric vehicles.