My wife has a nasty habit of not lifting her feet when getting out of the car. I have 6K on the clock and the tan carpet on the passenger side was FILTHY! Luckily I Scotchguarded the entire interior the day I got the car and the carpet has come clean. I also had my door sills covered with Paint Protection and had I not had the door sills done along with the rest of the car the sills would be COVERED in scratches. The door sills are quite wide on these cars and your shoes scratch the edges of the door sills. By investing in some protection when my car was new, my car STILL LOOKS NEW!