the answer is no.

Will regular Bondo stick to plastic?

Body filler is also not designed to adhere to a plastic surface the way that it adheres to metal. Most plastics require an adhesion promotor to allow the plastic repair material to adhere to the surface.

What will Bondo adhere to?

Not only does it adhere to galvanized metals, but it is easy to mix, easy to apply, and provides for clog-free sanding. Many repair products do not properly adhere to galvanized metal. Bondo Ultimate does. Bondo Ultimate can be applied directly over sanded and cured primer and paint.