Claas Xerion 5000 4WD Tractor Low-poly (Polygon mesh 3D model) is available on CGTrader for $49. Original author: ultra3dmodels. Specs: 2514 polys, 2365 verts.
OBJ (OBJ, filesize: 6.27 MB), JPG (JPG, filesize: 66.5 MB), FBX (Autodesk FBX, filesize: 9.14 MB), C4D (Cinema 4D, filesize: 4.32 MB), BLEND (Blender, filesize: 148 MB)