Check out AUDI A6 2009 AVANT LOWPOLY Low-poly 3D model on CGTrader for $23. High-quality mesh by KG-DESIGN: 13291 polys, 13761 vertices.
MA (Autodesk Maya, filesize: 2.2 MB), BLEND (Blender, filesize: 3.57 MB), OBJ (OBJ, filesize: 3.27 MB), FBX (Autodesk FBX, filesize: 1.75 MB), STL (Stereolithography, filesize: 1.18 MB), DAE (Collada, filesize: 5.57 MB)