Too little information here to really tell you. Post a larger render, show the wireframe/ topology/ edgeflow, list polycount and either provide a turn around or render it in different positions so we can actually assess what it looks like. Right now, I can barely tell what's going on on the back of the truck, I can't see much of the truck at all. I can only see the front and what little there is to look at is hard to critique or talk about.
For example, I can only really see the front, the "sideview" renders are impossible to analyze, -1. The front looks alright, It's not big enough for me to actually see the detail, so -1 for that. The vehicle sort of looks detailed and has a nice color scheme to it, +1. I don't understand the scale or proportions to the vehicle, -2, because there is nothing to base it off of and it looks like a toy. -1 for bad composition.
