Auto Insurance Quotes - Free Car Insurance Estimates. No matter where you live, if you drive a car, you need auto insurance coverage. Auto insurance quotes and free car insurance estimates are easily available from Allstate. Car insurance requirements vary from state to state - finding out more about your state coverage requirements is your first step towards researching and purchasing your coverage. Your auto insurance rate is adjustable through your coverage limits and your deductible amounts. There are a number of other factors that affect the price of insurance, including your driving history, your age, and the type of car you drive.