Dealership vs Bank vs Credit Union: Used Car Financing Explained Shopping a used car online? You can view live financing options in three places: your bank’s auto-loan portal, local credit unions’ rate pages, and the dealership’s finance center. Each channel trades off convenience, rates, and approval flexibility. Dealerships still originate nearly 30% of auto loans—so they’re common—but not always cheapest (see APR and fees) according to Bankrate’s market overview (nearly 30% share) Bankrate’s …