To restore car seats to their original condition, appropriate methods should be selected based on the material and the degree of damage. For leather seats: First, use a specialized cleaner to thoroughly remove stains and grease. Stubborn stains can be gently scrubbed with a soft-bristled brush, and the seats must be completely dry after cleaning. If discoloration is noticeable, use a water-based leather dye (environmentally friendly with low odor) for even application, applying thin coats in layers to ensure colour consistency. For fabric seats: After deep cleaning, use an interior-specific cleaner along with steam cleaning to remove embedded dirt. If the seat cushion is sagging, replace it with high-density foam or reupholster the entire seat; the market price ranges from approximately 800 to 2000 Malaysian Ringgit. For daily maintenance: It is best to use leather conditioner or fabric protector monthly, while avoiding direct sunlight and contact with sharp objects. If DIY repair is challenging, the cost of a comprehensive seat restoration service at a professional auto detailing shop typically ranges from 1500 to 3500 Malaysian Ringgit. Original manufacturer techniques can extend the service life by 3 to 5 years.