The MyUSA Credit Union is a auto loan from MyUSA Credit Union. The ongoing APR is As low as 5.70% APR (Auto & Truck Loans – 2023 and Newer); as low as 6.35% APR (Auto & Truck Loans – 2022 and Older). Typical credit limit: Minimum loan amount usually $5,000. Minimum loan amount for terms greater than 63 months is $10,000. Minimum loan amount for terms greater than 75 months is $20,000.. Loan terms: Take up to 84 months to repay on qualifying vehicles.