Strange transition between model and symmetry wall

Hi,

I set up the hex-dominant mesher and BL, but after generating the mesh I noticed that strange teeth appear between the car surface and the symmetry wall, which just ruins the quality of the mesh and especially the quality of the BL. I adjusted the Surface refinement and Region refinement settings, but the teeth are still there. Could you please advise how to get rid of them? I note that I also tried the Standard mesher, I would rather have a solution for hex-dominant please.

And the geometry is clean but after meshing it has these ,teeth”.