This was weird.. So I go to get into my car this morning and notice that there are black marks, like lines toward where the seat go`s inward.. I tried to get it off but no luck..

Any suggestions?

 

My frost seats show belt marks on the drivers side on the door side of the back. Ruined the look of the interior. Needs a Leather Doctor. Just putting it off until I can't stand it any longer. Poor leather quality. 03 with 14K

 

All leather needs some UV protection. That's why it's important to always clean and condition them every six months. I've owned four different cars with leather including the Z and never had any fading problems.