ECARX-backed SiEngine raises $200 million for cabin-drive fusion silicon
The chip venture ECARX co-founded with Arm China raised the round as it moves from cockpit processors into single chips that run infotainment and driving workloads together.
SiEngine, the automotive system-on-chip venture that ECARX Holdings founded with Arm China in 2018, said on July 31 that it had raised more than $200 million in equity financing over the first half of 2026. ECARX, which is listed on Nasdaq and remains the largest single shareholder, reported the round in a Form 6-K filed the same day.
The company said the proceeds would go to research and development, manufacturing capacity and international expansion. Its flagship cockpit part is Longying I, a 7-nanometer processor that has passed one million cumulative units and ships in vehicles from Geely Galaxy, Lynk & Co and FAW Hongqi. The chip the financing is meant to carry is Longying II, a 5-nanometer design unveiled in April that SiEngine rates at 200 TOPS and describes as a cabin-drive fusion part: one processor handling the infotainment and assisted-driving workloads that today sit on separate silicon, with model inference running on the chip itself. Vehicle integration work is scheduled to begin in the first quarter of 2027, in ECARX’s Antora line of central computers and under its Flyme Auto operating system.
ECARX said its systems were in more than 11 million vehicles across 18 automakers and 28 brands. The release also referred to a multi-year supply agreement with an unnamed global automaker, without naming the customer or the volumes. Separately, it said the two companies’ combined silicon now supports Level 2 through Level 4 driving.
The Chinese-language release named the investors, among them Shandong High-Speed Group, Longding Investment and several municipal funds, alongside existing shareholders. SiEngine said Shandong High-Speed would also contribute road-network access for vehicle-to-infrastructure validation work.