Sona BLW Precision Forgings Limited (Sona Comstar) has entered into definitive agreements with Japan-based DENSO Corporation to establish two joint ventures for the development, design, manufacturing and marketing of advanced electric and hybrid powertrain systems. The partnership brings together DENSO’s expertise in automotive electrification and Sona Comstar’s engineering and manufacturing capabilities to develop globally competitive powertrain solutions from India.
The collaboration aims to address the growing demand for efficient, reliable and cost-effective electric and hybrid vehicle technologies as the global automotive industry accelerates its shift towards electrification. The two companies will combine their strengths in product development, research and development, manufacturing and supply chain management to deliver advanced powertrain systems for multiple vehicle segments.
The first joint venture will focus on high-voltage liquid-cooled traction inverters, traction motors and generators for electric and hybrid passenger vehicles, commercial vehicles and other larger vehicle applications. Under the agreement, DENSO will hold a 51% stake and manage the venture, while Sona Comstar will own the remaining 49% and contribute its engineering expertise, manufacturing capabilities and established supplier network.
The second joint venture will cater to electric and hybrid two-wheelers and three-wheelers. As part of the transaction, Sona Comstar will transfer its existing electric traction motor and controller business for these vehicle segments into a wholly owned subsidiary. DENSO, directly or through its affiliates, will acquire a 49% stake in the business at an enterprise value of ₹1,750 crore, while Sona Comstar will retain a 51% stake and management control.
The new company will manufacture air-cooled traction inverters, traction motors, generators and e-Axles for electric and hybrid two- and three-wheelers. Both companies expect the partnership to accelerate product innovation, expand their technology portfolio and strengthen their ability to serve a wider customer base in India and overseas.
As part of the collaboration, both partners will license their intellectual property and technical know-how to their respective majority-owned joint ventures in return for royalty payments. The transaction remains subject to customary regulatory approvals and other closing conditions.
Commenting on the development, Vivek Vikram Singh, Managing Director and Group Chief Executive Officer of Sona Comstar, said the partnership represents a major milestone in the company’s evolution as a global mobility technology provider. He said combining DENSO’s leadership in automotive electrification with Sona Comstar’s engineering and manufacturing strengths will accelerate the development of advanced electric and hybrid powertrain systems while expanding the company’s presence across multiple vehicle categories.
Tsuneo Maebara, Head of the Powertrain Systems Business Group at DENSO Corporation, said India has become an important market for vehicle electrification due to its diverse mobility ecosystem and growing adoption of electric vehicles. He noted that the partnership combines the strengths of both companies to deliver advanced electrification technologies for Indian and global markets while supporting DENSO’s long-term growth strategy in electric mobility.
Headquartered in Kariya, Japan, DENSO is a leading global mobility technology company with annual revenue of 7,540 billion yen. The company develops advanced automotive technologies and components for nearly every major vehicle manufacturer worldwide. With around 170 manufacturing facilities and a workforce of approximately 155,000 employees across the globe, DENSO produces a wide range of products, including electrification systems, powertrain technologies, thermal systems and mobility electronics.
The company is committed to creating safer, cleaner and more efficient mobility solutions while advancing innovation through significant investments in research and development. During the financial year ended March 31, 2026, DENSO invested approximately 9.2% of its consolidated global sales in R&D to drive future mobility technologies.
Sona BLW Precision Forgings Limited (Sona Comstar) is a leading global mobility technology company headquartered in Gurugram, India. Established in 1995, the company operates manufacturing and assembly plants, research and development centres, and engineering facilities across India, the United States, Serbia, Mexico and China.
Sona Comstar designs, develops and manufactures advanced, mission-critical systems and components for automotive and mobility original equipment manufacturers (OEMs). It is a leading supplier of driveline and traction motor solutions for the rapidly expanding electric vehicle market and also provides brake systems, couplers and suspension systems for the railway sector. Backed by strong expertise in precision forging, mechanical and electrical systems, radar sensors, and software development, the company serves a diversified global customer base across multiple vehicle segments and markets.
