you have to be at least 16 to purchase a car....
You can purchase a car at any age. You just cannot drive the car until the legal driving age.
No, a 17 year old can not legally lease or purchase a car. This is because minors can not legally enter binding contracts.
old car trader
Purchase a Car Fax report.
My purchase of an old police car My 1991 marriage
If you are looking to exchange your car for a newer model, you can do a trade in once you find the vehicle you wish to purchase, or you can sell your old car first, and then purchase a new one from a car dealership.
One can purchase a 1994 Chevy Silverado at certain Chevy dealerships. The car is too old so most of the dealerships will not carry the car. One can also purchase a used car from Edmunds or another online car site.
You can try a used car lot or some car dealers have used cars available for purchase. Or you could ask around and see if anyone you know is selling a car.