This document analyzes the long-term solvency of Tata Motors and Maruti Suzuki through calculating and comparing their debt-equity ratios from 2010-2011 to 2014-2015. It finds that Tata Motors had an average debt-equity ratio of 0.63:1 over this period, ranging from 0.49:1 to 0.85:1 annually. Maruti Suzuki had a significantly lower average ratio of 0.02:1, ranging from 0.01:1 to 0.03:1. The study concludes that both companies maintained debt-equity ratios well below the generally safe threshold of 2:1, indicating low reliance on debt and strong ability to repay long-term commitments.