Car insurance is insurance consumers can purchase for cars, trucks, and other vehicles. Its primary use is to provide protection against losses incurred as a result of car accidents.

Insurance can cover some or all of the following items:

- The insured party
- The insured vehicle
- Third parties
Different policies specify the circumstances under which each item is covered. For example, a vehicle can be insured against theft, fire damage, or accident damage independently.

In the United States, liability insurance covers claims against the policy holder and generally, any other operator of the insured’s vehicle, provided they do not live at the same address as the policy holder and are not specifically excluded on the policy. In the case of those living at the same address, they must specifically be covered on the policy. Thus it is necessary for example, when a family member comes of driving age they must be added on to the policy. Liability insurance generally does not protect the policy holder if they operate any vehicles other than their own. When you drive a vehicle owned by another party, you are covered under that party’s policy. Non-owners policies may be offered that would cover an insured on any vehicle they drive. This coverage is available only to those who do not own their own vehicle and is sometimes required by the government for drivers who have previously been found at fault in an accident.

Generally, liability coverage does extend when you rent a car. However, in most cases only liability applies. Any additional coverage, such as comprehensive policies, i.e. “full coverage” may not apply. Full coverage premiums are based on, among other factors, the value of the insured’s vehicle. This coverage may not apply to rental cars because the insurance company does not want to assume responsibility for a claim greater than the value of the insured’s vehicle, assuming that a rental car may be worth more than the insured’s vehicle. Most rental car companies offer insurance to cover damage to the rental vehicle. These policies may be unnecessary for many customers as credit card companies, such as Visa and MasterCard, now provide supplemental collision damage coverage to rental cars if the transaction is processed using one of their cards. These benefits are restrictive in terms of the types of vehicles covered.[6]

In some regions, the costs associated with not having access to the vehicle ("Loss of Use") is also covered. This is usually an optional coverage.