In Illinois there is no law prohibiting a minor from holding the title to a vehicle. However, the IL Secretary of State (SOS) advises caution to those that may sellĀ a vehicle to someone younger than 18, because only a buyer 18 and older can be legally bound to a sales contract.
So as a minor it is likely that when buying a car you will be required to have a parent or guardian sign on any legal document with you, such as the sales contract and the insurance policy that you will need to place on the vehicle you title in your name at age 17.
So while Illinois may not have a minimum age for titling a car in their name, an insurance company will normally require an adult, parent or guardian, sign on your insurance policy with you since you are a minor and your insurance policy is a legal document.
For titling a car in your name contact the Illinois SOS and for insurance you can start shopping around here for your young driver car insurance needs.