In recent years, environmental sustainability has become a critical concern for businesses due to climate change, regulatory pressure, and increased stakeholder awareness. Green accounting and sustainability reporting have emerged as important tools for measuring and communicating environmental performance. This study examines green accounting and sustainability reporting practices in Indian manufacturing companies with special reference to selected automobile companies. The research analyses the extent of environmental disclosures, sustainability initiatives, and compliance with global reporting frameworks such as the Global Reporting Initiative (GRI). The study is based on secondary data collected from annual reports, sustainability reports, and corporate websites of selected automobile companies. The findings reveal that while leading automobile companies in India have adopted sustainability reporting practices, green accounting is still largely voluntary and qualitative in nature. The study highlights the need for standardized green accounting practices and stronger regulatory frameworks to promote sustainable development in the Indian manufacturing sector.