Hi, to become an automobile designer, you need fluency in physics and mathematics to craft lightweight cars with low wind resistance. You also need to develop your writing and computer skills with English and computer classes. Automobile designers can work in 1 of 3 areas: exterior design, interior design, or color/trim design. So you can decide yours. You can go for a bachelor's degree in industrial design, and then either obtain a graduate degree in transportation engineering/automotive design or land an entry-level position in industrial design and use that experience to springboard to an automobile designer position.You can even go for a course in CAD courses.

This is how you can get a qualification in this and then with some experience you can get a proper job depending upon your interest as well. Good Luck.