BYD Denza Z uncovers proprietary steer-by-wire chassis architecture with triple-motor hardware
China EV Marketplace<br>China EV DataTracker<br>China EVs & More Podcast<br>ICA Reviews
EV
BYD Denza Z uncovers proprietary steer-by-wire chassis architecture with triple-motor hardware
3 min to read
Jul 1, 2026 4:32 AM CEST
Adrian Leung
BYD Denza Z deletes the standard steering column for an independent triple-motor steer-by-wire layout. Credit: CNC
Understand China EV’s Market
Real-time notifications when critical EV data is released
All important data in one place
2,000,000+ data points
Become a member
BYD‘s Denza Z high-performance electric sports car has revealed its internal steering architecture through a complete teardown of chassis components, according to Weibo. Leaked hardware schematics published by automotive platform insiders confirm that the upcoming model has fully deleted the traditional mechanical steering column. The baseline system relies entirely on a proprietary steer-by-wire hardware matrix developed in-house by FinDreams, BYD’s internal components and engineering division.
The newly uncovered physical assembly features the specialised FinDreams POR8 steering motor component. Industry teardowns reveal that BYD has bypassed the conventional dual-winding motor designs used by legacy Tier 1 suppliers such as Bosch and Nexteer. The front axle utilises a single-winding, single-motor layout that minimises thermal accumulation and packaging volume within the front suspension bay. Physical safety margins are maintained through direct integration with the centralised E³ platform architecture, which serves as a cross-domain safety net for vehicle motion control.
Chassis engineering details
The steer-by-wire system operates with a standardised control precision of 0.1° while executing processing response times three times faster than conventional mechanical steering setups. The front single-motor configuration is supported by two entirely independent steering motors positioned on the rear axle. This triple-motor layout allows the rear wheels to achieve a maximum steering angle of ±20°, minimising the overall vehicle turning radius to 4.62 meters.
The upcoming Denza Z sports car utilises a single-winding front steering motor with 0.1° precision.
Six-layer safety network
To satisfy strict regulatory safety thresholds, the POR8 assembly incorporates a built-in six-layer localised redundancy architecture. The electronic system combines dual master control microchips, independent 12V and 48V power supply circuits, and six-phase motor position monitoring. Additional failsafes include dual-redundant torque and angle sensor feeds, segregated dual software operating systems, and automated systemic fallback monitoring governed by the central E³ chassis domain controller.
Strategic platform roadmap
This proprietary chassis infrastructure is dedicated exclusively to premium-performance applications in the luxury vehicle segment. BYD intends to debut the technology during the commercial rollout of the 1,582 hp Denza Z sports car, following extensive development phases conducted during Nürburgring supercar testing. The technical unveiling coincides with the implementation of the new national steer-by-wire system requirements, which are taking effect across the Chinese domestic marketplace.
This luxury technological pivot arrives as domestic brand registrations recover from early seasonal contractions. According to China EV DataTracker, domestic monthly vehicle sales expanded from 5,351 units in February to 6,762 units in March, before expanding to 10,638 registrations in April. May retail delivery performance accelerated further to reach 15,620 units, representing a 46.8% month-on-month volume expansion and capturing a 1.0% domestic market share baseline.
BYD
Denza
Denza Z
Adrian Leung<br>Writer
Adrian, an Electrical and Computer Engineering graduate with a love for cars, brings expertise and enthusiasm to every test at CarNewsChina. He also enjoys audio, photography, and staying active.
Recommended for you
BYD Seal 08 launched with 1,660 km range and flash charging, starts 28,980 USD in China
BYD FCB Tai 9 flagship SUV teased with 5.3 meter length and flash charging
BYD accelerates Blade Battery 2.0 production to solve enviable Seal 08 bottleneck
Most important news in your inbox. Weekly.<br>We’ll send you a weekly summary in your e-mail. No spam. Unsubscribe with one click.
Subscribe
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Follow us for ev updates
Join our Telegram
Follow us on Google News
Comments
Brands<br>BYD<br>Xiaomi<br>Nio<br>Xpeng<br>Li Auto<br>Tesla<br>Zeekr<br>Leapmotor<br>Aito (Huawei)<br>Deepal<br>Onvo<br>Yangwang<br>MG<br>Geely<br>Wuling<br>Changan<br>Dongfeng<br>SAIC<br>Firefly<br>Avatr<br>Volkswagen
Topics<br>EV Registrations<br>Big Read<br>Sunday China Drive<br>EV<br>ICE<br>PHEV<br>EREV