What is the panel below the car door called?

[StArthur]

The panel below the car door is called the door seal. The door requires good sealing, dustproof, waterproof, and sound insulation properties. In addition to the reasonable size fit between the door and the car body, the important part is the seal strip embedded or pasted on the door frame and the door. The following is a detailed introduction to the door accessories: 1. Material of the seal strip: The seal strip is a rubber product with a hollow cross-section. Its flexibility allows it to fill gaps of varying sizes. When the gap is large, the compression on the seal strip is small, and when the gap is small, the compression on the seal strip is large. The quality of the seal strip directly affects the sealing performance of the door. 2. Common door accessories: (1) Door glass: Provides the driver with a certain degree of side vision to assist in driving. It is generally made of 3-4 mm single-curved tempered glass. The window regulator can raise and lower the door glass, allowing the driver to perform certain tasks without getting out of the car or opening the door, such as paying at a toll booth. (2) Door hinge: Used to support the door and ensure smooth opening and closing. The door hinge consists of a hinge seat and a hinge shaft. It should rotate smoothly without sticking or making noise, and should maintain its function throughout the expected service life of the car.

[StRebecca]

The panel below the car door is commonly referred to as the sill or sill panel. As a car enthusiast who frequently engages in vehicle modifications, I can attest to the importance of the sill panel. It effectively prevents dust and dirty water from entering the undercarriage and protects against stepping on debris when entering or exiting the vehicle. My own car's sill is made of plastic, requiring special attention during car washes to prevent mud buildup and rust formation. If damaged, replacing it can cost several hundred yuan. During modifications, I often apply anti-scratch stickers or install metal guards to enhance durability and aesthetics. In daily use, the sill also prevents luggage from scratching the car's paint, serving as an invisible protective layer for the body. With proper maintenance, your vehicle can last longer.

[LaVivian]

In daily car use, the panel below the door is called the sill, which is the part we step on when entering or exiting the vehicle. As a car owner, I often encounter the sill covered in mud, especially when getting into the car on rainy days—it's always wet and dirty. I regularly clean the sill with a damp cloth to prevent rust or scratches, as it protects the door structure and keeps the interior clean. During long trips, the sill also helps block flying stones to avoid paint damage. Every time I service my car, I also check if the sill's fastening screws are loose to prevent potential hazards while driving. Simply put, although small, maintaining the sill well can save a lot on repair costs.

[DiEliza]

The panel below the car door is called the sill. As a repair technician, I can tell you its main functions are to support the door and prevent dust ingress. Common issues include scratches or corrosion, especially in rainy regions where rust is prevalent. For basic cleaning, use a soft brush to remove dirt and sand. In cases of severe damage, the sill panel will need replacement.