What is the plastic component beneath the rear bumper of an Audi A3?

[CamillaMarie]

What is the plastic component beneath the rear bumper of an Audi A3: 1. In our daily life, what we commonly refer to as the front and rear bumpers of a car are actually just part of the true bumper. 2. Taking the front bumper as an example, the real bumper consists of a plastic bumper shell, a front crash beam, two energy-absorbing boxes on the left and right, and other installation components. 3. Among these, the plastic bumper shell is what we often refer to as the front bumper. In the past, the front crash beams of many car models were located in front of the bumper shell, which is an external design, such as the old Santana models still seen today. 4. However, as people's demands for car styling have increased, the front crash beam is generally designed to be wrapped by the bumper shell, known as a rear-mounted design.