NO way! 16 is quite young, most people don't really get serious about that stuff till after college, or at least after moving out on their own. And if you really enjoy cars, you'll find ways to learn more about them. Try to get yourself an old car that you can tinker with, something simple that doesn't have all the electronic gizmos of cars from the last 20 or so years. You can learn a lot by changing a head gasket, or adjusting valves, and all of that can be learned fairly easily with a good repair manual, a couple wrenches, and lots of time and effort. And then think about getting yourself into a good technical school, there are many that specialize in auto repair. Or you could find a college that has a Formula SAE program where they build and drive real racecars. Congrats and finding your calling in life, and good luck!