Add collision to .fbx

I am making a car driving ‘game’ and have made a model in Blender; I have have exported as .fbx into the assets folder and it appears.

However it is only rendered, with no collision which is a problem.
I do not want to use loads of box colliders, and want to know if its possible.

Performance is not a concern (within reason)

Thank for any help

Look at import options of your model. Click model and check Generate colliders and don2t forget to make it convex. Hope this helpes.

Create a prefab (or a prefab variant) from your imported fbx. Then you’re allowed to edit it. Add colliders, sound emitters, particles and everything else you want.