This study examines the relationship between working capital management and profitability in the automotive sector of Tungurahua Province, Ecuador. Using financial data from 12 companies over a ten-year period (2011–2021), we analyzed the components of working capital and their impact on profitability measures. The research employed correlation analysis and linear regression modeling to establish the statistical relationship between these variables. Results indicate a statistically significant positive correlation between working capital and return on equity (ROE), with a Spearman’s Rho coefficient of 0.247 (p = 0.004). Linear regression analysis confirms that for each 1% increase in working capital, ROE increases by 0.0481 percentage points (p = 0.0018). These findings provide empirical evidence that effective working capital management contributes to improved profitability in Ecuador’s automotive sector, offering practical implications for financial management strategies in similar contexts.