I was going to add the number of triangles and points for each LFS car in the car infobox in LFS Manual (see the XF GTI manual page), but it's not as straightforward as it looked
In the modeller, when I select LOD3, the total number of output tris and points is different from the actual number of tris or points. You can see it in the screenshots where I select all tris and points. I think it should say 26 tris / 20 pts, but it says 36 tris / 46 pts. I don't know how those numbers are calculated.
You seem to be creating triangles manually for the edge of the tree - instead you could use the extrude function and it would create the triangles automatically.