Can a 17 year old buy car without parent consent?

In most US states, a 17-year-old cannot legally buy a car without a parent or guardian's consent. The ability to enter into a legally binding contract, including purchasing a car, typically isn't granted until the age of 18. While there might be very narrow exceptions depending on specific state laws and circumstances (like emancipation), it's highly unlikely a 17-year-old could legally purchase a car solely on their own.