I believe that there should be another way to find out what is wrong car. Usually, you would take your car to a mechanic and he would over charge you for parts. Here is my proposal. When something is wrong with your car, it would send you an alert online through sensors placed around the car. These senors would send information about the car's issues and provide a way to purchase these new parts through their app. This would allow for cheaper parts that were tailored to your model.