Definition: Estimates for car insurance are a type of premium that helps determine the amount of money you need to pay each month, or more generally how much insurance coverage is needed. Often, an estimate is provided by an insurance broker, agent, or other third party and it is based on factors such as age, sex, driving history, location, accident frequency, etc. The purpose of these estimates is to provide a rough guide on the cost for your particular situation but they do not provide specific numbers. An insurance quote should be viewed in conjunction with an actual estimate given by a third party and it's important to understand that this quote may vary based on the different factors you have listed (e.g. if you are married, or live in a remote area).