Render looks "brighter" than in viewport preview Somehow my viewport preview shows darker result than what comes out in render (check out in corner of the pic)

World strength is at zero and ambient occlusion is also disabled.

Floor is using bump and roughness from picture. Wall has adaptive subdivision surface  modifier.

All lit using planes with emission shaders.

I wanted to play around with render layers and maybe I screw some setting there, hope this helps.
Look at your outliner, you have (at least) 1 object (probably a light) set to render, but hidden in viewport (camera icon active, but eyeball icon greyed out) it's named BMWRim .  I'm guessing it's a rim light.