The Rio Grande Credit Union is a auto loan from Rio Grande Credit Union. The ongoing APR is APR as low as: 8.52% (36 Months); 8.77% (48); 9.02% (60); 9.27% (72); 9.77% (84). Effective Date: October 17th, 2026. Loan terms: 36; 48; 60; 72; 84 Months.