If you are constantly financing thousands of dollars for a new car, then you are "losing" money through both depreciation and interest.
You want to be in a position where you aren't loaning money. If you have money outright and buy a car without a loan, you are paying the bank $0 interest. Then, your only loss is through depreciation.
My suggestion is that you keep your car until you pay off the loan. Pay off the loan early if you can. That decreases your total loan interest payment to the bank. Then, keep your car and maintain it. After the loan payments end, put the monthly loan amount you would have paid into a savings account. Build your equity.
