So, are you Polish or Italian? 
This is an awesome project, but looks kind of WIP-ish, and could be easily improved:
-What immediately caught my eye were the lamps - they are too bright, and lack transparency. I would suggest to make them more glass-like (refraction), remove any diffuse component (just set it to pure black), and add some “worn off” effect by making then slightly yellowish. Then you could think about adding a layer of dust via the Corona Layered Mtl.
-Carpaint - I cannot imagine a car being so mat, not even an old one. Much more reflectivity could be used, and then it could be mapped with some dust/scratches map for the glossiness.
-The places where the yellow pistons are welded into the car body - there are just intersecting objects there. Definitely looks unnatural.
-Then the scenery and framing could be better. I would put the main hero slightly off the center of the frame, and add more dramatic, futuristic lighting - LightMix could help with that. 
Those are just suggestions! I still admire your patience and the idea itself.
Hi maru
Thanks for your comment. I’m Italian
I will try to answer your points:
https://www.riparasicuro.it/wp-content/uploads/2016/10/Faro-molto-opaco.jpg
Surely I could make this opacity less linear and increase the yellow / orange in the refraction.
the texture of the car was made with substance painter, and I probably exaggerated with dust. I attach a substance painter render wip.
you’re right, I forgot to work on that point.
thanks, for the comment on the scene, surely I have to study more on the composition of the scenes!
thanks anyway for the comment, it will be precious for the next works!
F
