You cannot separate the wheels from the car. You cannot cut a hole in the wall. You cannot isolate the handle from the mug.
You need a model. (Also known as multi-object, separated, or layered geometry.) partition 3d model free download
Built directly into Blender. Use the search filter instead of "Single Object." This ensures you download assets that are logically grouped. Look for models tagged "Modular" or "Game ready." 4. Free3D.com (The Keyword Strategy) License: Varies by user (check the badge). You cannot separate the wheels from the car