Artifacts in render (but i think it have something to do with modeling)

Support Modeling
1

Huy guys, I just trying to render my car model and I get this

http://img859.imageshack.us/img859/9628/screenshotfrom201207030.png

Faces

http://img37.imageshack.us/img37/9628/screenshotfrom201207030.png

Wireframe

http://img4.imageshack.us/img4/9628/screenshotfrom201207030.png

What am I doing wrong?

2

i think you got inverted normals and/or overlapping faces, try removing doubles and recalculating the normals, should fix it.