How can I fix this transparency issue? I'm pretty new to Blender and I'm having some trouble with transparency. I tried searching up for the solution, but I can't seem to understand any of them.

The objects I'm having trouble with are the car, the grates at the back and the face. It appears that they are somewhat transparent.



I can also provide the .blend file.
Right click on them and reset everything. It works in both render engines.