I have a Toyota Etios Liva Viera Limited Edition car, which is going to be three years old next year January. It has run for about 3711km.

Today, I noticed these spots on the car body:

[![Car body spots](https://i.stack.imgur.com/f8ElR.jpg)](https://i.stack.imgur.com/f8ElR.jpg)

I tried washing it with soap and water and cleaned it with a soft towel. But the spots are not going. They're not visible from a distance, but when the car body is touched, one can feel that it is no longer smooth. This has happened to all the four doors.

Yesterday I had taken my car for a small servicing at the authorised Toyota service centre, for some small checks like underbody paint protection check, and had asked them to wash the car as well. I believe that due to the sticking mud, I did not notice these spots before, and once the car has been washed, I can feel these prominent spots. However, I can assure you that these are not caused by the service personnel.

What are these? Are these rusts? Can a car paint allow rusts on the body? Do I need to paint the body again? How can I prevent rusting of my car?

I live in Kolkata, India.