The Problem with the Fiberglass Sienna
2005 Toyota Sienna XLE Limited
The bumpers are made of fiberglass. Sucks they should have been fortified by a stronger substance with an underlayment of aluminum or lightweight steel. So when I backed into something a puncture went into my rear bumper. And when I backed the corner into brick building, it just mushed it in, and I proceeded to push it back out. So I don't know if the vehicle's shell would protect me in a real collision, but it has a great safety rating.