How do I convince my parents to let me get a V-6 Ford Mustang?
your barking up a bobwire tree, at some point you need to grow up. Its not about you, or what you want. Your refusal to accept the word NO is the main problem. You want to be treated as an adult? act like one starting now. And is mommy buying the car too? geez. Here is an idea, get a full time job, go to school, put all the money in a savings account, until you have enough to buy your own car. Instead of dancing around waiting for mommy and daddy to buy you a car. You are going to disappoint your parents, and yourself when they bring home a nice car and its not that mustang. GET OVER IT ALREADY. graciously accept any gift that they get you and drive it like a man until you can afford your own cars.