― Car Insurance, When Should I buy Rental Car Insurance? ∙ As you pick up your rental car, you will be asked by the associate if you would like to purchase insurance for the rented vehicle. You may stop and ask yourself, do I really need this insurance? Am I already covered through my current auto insurance policy for a rental car? Won’t the credit card I used provide insurance? Is the rental car company’s insurance the best option? Any consumer may easily dismiss the notion of paying the [...].