ECARX Holdings announced that SiEngine Technology Co., Ltd., its incubated automotive semiconductor investment, has secured $200 million in new equity capital from institutional investors over H1 2026. Co-founded in 2018 by ECARX and Arm China, SiEngine has evolved into an independent automotive semiconductor enterprise, with ECARX retaining its position as the company’s largest single shareholder. The funding round marks a transformative milestone for SiEngine as it establishes itself among China’s top vehicle-grade semiconductor designers.
The investment will fuel SiEngine’s next-phase R&D, production capacity expansion, globalization, and international customer growth, further strengthening the vertical silicon-to-software strategy that has anchored ECARX’s approach since the two companies began working together. SiEngine’s Antora-powered solutions using the 7nm Longying I chip have achieved global deployment across vehicle models including Geely Galaxy, Lynk & Co, and FAW Hongqi, demonstrating the coordinated chip-and-software system the two companies have built together over eight years of collaboration. Drawing on ECARX’s global OEM reach and SiEngine’s custom high-performance automotive silicon, the companies secured a landmark multi-year supply agreement with a major global automaker to drive further volume growth.
SiEngine’s newly unveiled 5nm Longying II cabin-driving fusion SoC integrates native large language model functionality and boosted AI compute performance. Purpose-built for ECARX’s next-generation Antora central computing platforms and Flyme Auto OS, the chip is designed to establish a new industry benchmark for China’s end-to-end software-defined vehicle technology. Beyond their core passenger vehicle offering, ECARX and SiEngine have also broadened their combined technology and commercial footprint through strategic alliances with commercial vehicle and robotaxi manufacturers.
ECARX and SiEngine’s unified silicon solutions now support passenger vehicles, commercial fleets, and full-spectrum L2 to L4 intelligent driving use cases, expanding the partnership’s total addressable market and unlocking long-term growth opportunities. ECARX’s technology is deployed across over 11 million vehicles worldwide and is currently partnered with 18 global automakers and 28 vehicle brands to shape the future of automotive intelligence. Headquartered in London, ECARX was founded in 2017 and listed on Nasdaq in 2022, and operates from 13 major international locations across Europe, the Americas, and Asia with a global team of more than 1,400 employees.
