The Frankenmuth Credit Union is a auto loan from Frankenmuth Credit Union. The ongoing APR is APR as low as: 2025 or newer 5.26% (75 months); 2024-2022 5.29% (63); 2021-2019 5.33% (51); 2018 and older 5.39% (39); effective date October 13, 2026. Loan terms: Up to 75 months (2025 or newer), 63 (2024-2022), 51 (2021-2019), 39 (2018 and older).