Becoming a car designer is a difficult,competitive profession to enter. You will need a portfolio of your work to get a job offer from a large company such as BMW or Audi. Depending on how far along you are with your engineering education,you may want to consider transferring to a design school that specializes in Transportation Design. College for Creative Studies & Art Center in the USA. RCA in London,Pforzheim University in Germany,Strate in France are just a few of several great design programs.