In the United States, as in most countries, it is mandatory to purchase car insurance before driving on public roads. If you want to save money on your car insurance there are a number of things you should know and do. First, know what you are being covered for and what protection you get. People generally purchase car insurance to provide protection from losses incurred as a result of car accidents. Second, take full advantage of any discount offer if you are, for example, a student, over the age of 50, a light driver. The insurance premium will vary depending on many of those factors and others such as type of car and the intended use of the car. Also, some insurers offer more coverage than others and include different deductible levels. Get as many quotes as possible from different insurance companies and do as much research before buying any policy. A lot of information is available online and there should be no reason to make an uninformed decision. You can also get information from your local state insurance office. Some more tips to keep in mind are: Be cautious of door-to-door and over the telephone insurance sales people; and don't give out any personal insurance ID numbers to companies you are not familiar with.