I am working with a car model and getting all of the materials ready for use in my project. The side windows have a noticeable reflection issue where the reflection appears blocky. The headlight cover also has some strange artifacts. I have provided the blend file so you may be able to help me solve this issue.

Blender file download (google drive): http://bit.ly/2SFRp8n

Windows show blocky reflection


1 Answer 1


Some of your faces don't have smooth shading.
They are shaded flat, creating those ugly triangular artifacts.

Just right click you model and select smooth shading.

enter image description here

  • $\begingroup$ I had done this before, but apparently doing it again fixed it. Thanks. $\endgroup$
    – 01Beaker
    Commented Feb 19, 2020 at 17:30
  • $\begingroup$ Happy to help :). Good luck with your project. $\endgroup$ Commented Feb 19, 2020 at 17:49
  • 1
    $\begingroup$ Also there are two triangles (6 edges) marked as "Sharp" so even set all to Smooth they stay sharp in render. Press W > Clear Sharp (or disable "Auto Smooth" option under Data Properties > Normals, but since your car is one object I dont think you want this :) $\endgroup$
    – vklidu
    Commented Feb 19, 2020 at 20:30

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