BYD to Put 4 nm Xuanji A3 Chip in Denza Model by 2027
Updated
Updated · Automotive World · Jun 30
BYD to Put 4 nm Xuanji A3 Chip in Denza Model by 2027
2 articles · Updated · Automotive World · Jun 30
Summary
A Denza production model due in 2027 is set to become BYD’s first vehicle to use its in-house Xuanji A3 smart-driving chip, according to LatePost.
The 4 nm processor was unveiled in May 2026 and is already in mass production, but automotive validation still typically takes at least a year across the chip, algorithms and vehicle integration.
BYD says one A3 chip delivers more than 700 TOPS, while three can exceed 2,100 TOPS; it also claims 20% lower power use and doubled utilization with its own algorithms, though those gains remain unverified at scale.
The rollout is central to BYD’s vertical-integration push, which has drawn more than CN¥100 billion into semiconductors and built a 7,000-person chip team across four research bases and five wafer fabs.
That push reflects Chinese automakers’ drive to reduce reliance on Western-aligned fabs, even as BYD’s current God’s Eye ADAS still depends on Nvidia and Horizon Robotics chips and software support from Momenta and Huawei.
BYD's new chip costs a third of Nvidia's. Can it truly deliver comparable autonomous driving or is a performance gap inevitable?
BYD now insures its self-driving tech against accidents. Will this unprecedented guarantee revolutionize the industry or become a massive financial liability?