The interior of your car get dirty when u where eat anything under car. U should purchase a leather seat covers for seat and make sure that they should be washables.
Every month or weekend u should clean your car neatly and wash your seat covers properly. Don’t rub it with brush just wash it with water.
After cleaning the foot mats please cover it with paper so the dirt like sand or anything will not stick to mat. It will stick to paper and you should change the paper without changing mat.
Change the paper every weekend and make your car clean by interior cleaning. In accesories shop u will find the polish spray it’s in cheap cost so u can purchase it polish your car interior. Like if u like it