What is the most common method of attaching passenger compartment trim pieces?

The most common method of attaching passenger compartment trim pieces is through the use of plastic clips. This method is favored because plastic clips are lightweight, easy to install and remove, and create a secure hold that can withstand the vibrations and movements within a vehicle. Plastic clips are designed to allow for some flexibility, which helps in accommodating minor shifts in the trim pieces, ultimately contributing to a quieter and more stable interior environment.

While screws, rivets, and adhesives are also used in various automotive applications, they generally don't offer the same balance between ease of assembly, serviceability, and effectiveness for trim attachment as plastic clips do. Screws can provide a strong hold but may require more tools and effort for installation and removal. Rivets are typically used for permanent attachments, making them less suitable for trim pieces that might need to be accessed or replaced frequently. Adhesives provide strong bonding but may be less convenient for future servicing or adjustments. Therefore, plastic clips are the preferred choice in the industry for securing passenger compartment trim pieces effectively.