You just bought a new car! Now you need to know how much to budget for all the car related expenses.SHOW ALL YOUR WORK FOR ALL PARTS ON PAPER.a. The car cost $21,452 after all the taxes and fees. You financed the car for 6 years at 4.9% APR compounded monthly. Monthly loan payment: b. Registration costs $320 per year. Monthly registration cost: c. Insurance is $582 for a 6 month premium. Monthly insurance cost: