Blender to Unity face bug

I have this car with face problems:

alt text

Then I fix it:

alt text

But in Unity:

alt text

alt text

The faces still faces the wrong direction. And the face seem like to reflect light even though its not facing the sun.

It’s not a missing material problem.

Any idea what cause this? Or what am I missing?

Go into edit mode > face mode, select all mesh with A, hit ‘N’, and find the normals. Select ‘face’. Now you will see that some of the faces do not have blue lines coming out of them. Select the faces that don’t have lines and go to mesh > normals > flip normals. They should show up.