This is a functional and cohesive with the body design of the vehicle. In addition to factors standard to weatherstripping, additional factors must be considered for vehicles, specifically in the engineering of the parts.

This is flexible to accommodate motion vibrations, endure extreme temperatures of hot and cold, withstand long periods of sun exposure and resist automotive liquids such as oil, gasoline, and windshield washer fluid (methanol).

Weatherstripping also plays a part in maintaining satisfactory ride quality in the vehicle, being partially responsible for sealing noise out from the passenger compartment.