BYD released its self-developed 4nm intelligent driving chip "Xuanji A3" on May 28, claiming it is China's first 4nm automotive-grade intelligent driving chip. With three chips working in coordination in a single vehicle, the total computing power exceeds 2,100 TOPS, supporting L3/L4 autonomous driving systems. BYD also launched a 1-year safety guarantee policy for City Pilot assisted driving, providing full compensation for at-fault accidents under compliant use, with no compensation cap.
BYD Chairman Wang Chuanfu said at the press conference that the automotive industry is transitioning from the electrification phase centered on batteries to the intelligent phase centered on chips. The company said it will continue to invest more than 100 billion yuan in R&D to improve traffic safety and intelligent driving capabilities.
Xuanji A3 Adopts 4nm Process: Three Chips Exceed 2,100 TOPS
Xuanji A3 is BYD's self-developed high-end intelligent driving chip, focusing on keeping core intelligent driving hardware in-house. Official data shows that with three Xuanji A3 chips in a single vehicle, total computing power can exceed 2,100 TOPS; TOPS is a metric for how many trillion operations an AI chip can perform per second, with higher values meaning more sensor and road data can be processed simultaneously.
In terms of energy consumption, BYD claims that Xuanji A3's power consumption per unit of computing power is 20% lower than similar products. When combined with its self-developed algorithms, computing power utilization can increase by 100%, aiming to make assisted driving fully controllable from chip to algorithm to vehicle control.
City Pilot Guarantee for 1 Year: No Compensation Cap Under Compliant Use
BYD also introduced a City Pilot safety guarantee policy, aiming to reduce user concerns about liability for intelligent driving. The company said that for new and existing users, if a compensable traffic accident occurs while using the City Pilot function in compliance, BYD will fully cover direct economic losses such as vehicle repair, third-party property damage, and personal injury that the vehicle is responsible for.
The policy is offered free of charge with a one-year coverage period and no compensation cap, and it will not affect the owner's commercial insurance premium the following year. After BYD previously introduced a guarantee policy for intelligent parking, the company said the actual usage rate of that function rose from 21% to 93%; extending the guarantee to City Pilot is clearly aimed at increasing user willingness to adopt advanced assisted driving.
God's Eye B Laser Version Available Across Entire Range: Optional Price 12,000 RMB
BYD also announced that all models support the optional God's Eye B laser version of assisted driving, with an optional price of 12,000 RMB (approximately HK$13,000). This indicates that BYD is trying to extend lidar-assisted driving from high-end models to a broader range of vehicles.
As for the God's Eye C system, the company mentioned that future upgrades will be carried out through OTA, but a specific timetable has yet to be announced. For users, the differences among the three God's Eye systems (A, B, C) will directly affect sensor configuration, City Pilot capabilities, and future upgrade potential.
BYD's Chip Layout Exceeds 20 Years: Formed a Closed Loop from Design to Packaging and Testing
BYD said it has been building its chip team since 2002, currently with more than 7,000 semiconductor R&D personnel, and has five wafer fabrication plants and four major R&D bases in mainland China, including a 12-inch wafer fab in Chengdu. Official data shows that BYD has established a full-process closed loop from product definition, chip design, manufacturing to packaging and testing, with 567 automotive-grade chip products, supplying 46 automotive brands at home and abroad. This vertical integration model allows BYD to further control the core components of intelligence in-house, in addition to batteries and electric drives.
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