The picture is oversaturated, and even that you paid attention to your histogram, I think that you overexposed parts of the image. You see that with the roof of the cars. They are mostly structureless.
ABAMBO | Hard- and Software Engineer | Photographer
In addition to what @RALPH_L mentioned, it appears there is some lens distortion towards the corners. I would have taken a few steps to the left to be more towards the center of these as well. Although not completely clipped on the histogram, some of the highlights don't have any visible detail in them, and I think there is a yellow color cast
With the train in the back, this display reminds me of a museum or private collection of antiques. I wonder if commercial photography is allowed here? But this wasn't an I.P. refusal.
I too am scratching my head at some of my rejections on 'quality', I have submitted the same image to other sites and they have been approved, with that in mind I'll just keep on putting stuff on and be baffled by why as I don't get it.
If you'd like some feedback on a specific photo or two, feel free to start a new thread with the full sized photos included. Including more than a few photos means you'll probably get less feedback on each photo.
I think it's safe to assume that different stock sites evaluate photos in different ways. I have photos accepted by Adobe and not by other sites, and vice versa.
No, quality issues are a different rejection reason, even that the car logos, the plates, and the stickers need to go, if you can solve the quality problems. And @shesson needs to submit a model release for the people sitting in the cars.
ABAMBO | Hard- and Software Engineer | Photographer