What is the small plug on the trunk lid of the Audi A4L?

[LaMarcus]

The small plug on the trunk lid of the Audi A4L is a vibration-damping rubber pad. Function of the trunk: The trunk of a car, as the name suggests, is the area where spare items are stored and goods or belongings can be placed. Since compact cars come in two types—hatchback and sedan—the size of the trunk varies accordingly. Generally, the trunk contains the car's spare tire, an emergency kit, a toolkit, a warning triangle, a fire extinguisher, a car refrigerator, the emergency release cable for the fuel tank cap, and in some high-end models, the starting battery is also located in the trunk. Principles for arranging items in the trunk: Place large items at the bottom and small items on top; position heavy items toward the front and lighter items toward the back. This is because heavier objects have greater inertia, and in the event of sudden braking, unsecured heavy luggage in the back could cause negative effects, such as damaging other items or the luggage itself.