There are a lot of options for this. Sketchup isn't ideal due to rather stringent licensing rules, so some options would be:
Blender - it's a free modelling program, takes a bit of learning about how to place objects in your scene and different lighting modes, but it's obviously the most flexible option. Probably get some free models from Turbosquid or similar and set them up.
Unity or Unreal Engine 4: Game engines, both of them have online resource shops with loads of assets you can buy or download for free and the ability to place them in a scene, set up lighting and render out images.
Clip Studio: Handy because it's already a comics-focused program where you can do all your panelling and everything too, it's set up with the sort of cel-lighting you might want in a comic by default and it even has options to turn the 3D into linework for you. Probably the easiest option, but lacks as extensive a catalogue of resources as some of the others.
As a general rule, if you feel like just using the 3D straight-off won't suit your work, a good option is to not just render it out and use it straight off as your background, but instead to trace over it with your own lines and add flourishes for a more natural feeling and avoid the clinical, weirdly hard edged and pristine look, or tendency for rounded surfaces to have visible polygons of a lot of cheap 3D assets. This way you get the helping hand on perspective and consistency 3D offers, but it still looks in-keeping with the rest of the art.