Because a 17-year-old person is a minor, a parent or guardian must sign the car insurance policy that is issued to them. This means that parents will be responsible for what happens when their teen driver is behind the wheel. The best thing to do is to contact insurance companies to learn their guidelines for allowing a minor to obtain their own car insurance policy. Teens are more likely to have an accident or file a claim than older drivers, which means that teen drivers pay a much higher rate for car insurance.
In some situations, letting a teen buy their own insurance seems like the best option, but teens ages 16 and 17 aren't normally allowed to buy their own car insurance policy, and standalone car insurance policies for teens are often much, much more expensive than adding a teen to an existing car insurance policy. Unless they're emancipated, teens generally can't buy their own car insurance policy until they're 18 or 19 years old. While you can title a car in the name of a minor, a license plate cannot be issued without proof of the vehicle's liability insurance. If you are a minor and want to own and insure a vehicle, check with your state's department of motor vehicles to see if your state has a minimum age for owning a car.
Younger teens tend to pay more for car insurance coverage, and 16-year-olds pay an average of 85% more than 19-year-olds. People under 18 are (generally) not legally allowed to enter into a contractual agreement, but an emancipated minor is allowed to do things like buy a car or sign an insurance policy. However, 18 year olds are often allowed to buy a car, apply for a car loan, and buy an auto insurance policy on their own. The age of majority isn't necessarily the same as the age requirement for obtaining a driver's license, so teen drivers can get their license years before they can purchase their own car insurance policy.
If your 18-year-old child has their own car and doesn't live in your house, they should have their own car insurance policy. However, some states have a higher age of majority (which is a legal term that explains when a teen is considered to be a legal adult), while some states may allow younger teens to purchase their own car insurance in some situations. A 17-year-old can get car insurance in most states, but as a minor, a parent or guardian must sign the policy with you. Therefore, in most states, a teen cannot independently buy or insure a car because minors cannot own property in most states or sign contracts, so parents would own that property until the child becomes an adult.
Age affects auto insurance rates because it is an indicator of driver risk for an insurance company. Policygenius has analyzed the auto insurance rates provided by Quadrant Information Services for each zip code in all 50 states, in addition to Washington, D.