However, the main reason that people don’t go with dealerships has to do with rates and fees.
If you use the dealers, you’re likely going to pay some clerical fees, as well as have to negotiate your interest rate. If you choose dealer-arranged financing, you might also be upcharged on the interest rate, as dealers can get kickbacks and bonuses.
If you go straight to the lender, you won’t have to worry about any of this. The rate you get is what you get, and you shouldn’t find any hidden fees. It’s often the way to get the best rate and forge a relationship with your lender.