Yes, it's the derating in the wireway. Everything else is ok. (The C/B's aren't above 6'7", the sealoffs are all poured, xfrmrs have plenty of clearance, lugs are on front bottom. I don't see any unsupported pipe)
The wires in that wireway should be derated to 35%. Most of those panelboards are 42 circuits, and the number of conductors in a cross-section greatly exceeds 40. 310-15(b)(2)(a).
Can you think of another way that this could be done and have it come out clean and still comply??
(And yes, it's an auto service garage)...S