Car/Many particles when import

Hi. Have a standart problem. When importing FBX car , and want to have skeleton , it diveded to much of particles, body, wheels , headlights. I dowanload this from turbosquid and other sites. What is problem ?

The car is probably not rigged properly in your content creation program (Max, Maya, Blender, etc…).

What program do you use to create content (meshes)?