My mechanic recommended leaving the heat shield (see attached photo) off my 2015 Prius. A few days ago I noticed the shield hanging down, so I asked them to check it while the car was in for an oil change. They said I could buy the plastic fasteners from Toyota if I wanted it reinstalled, but that the shield wasn't necessary. I searched several threads on PriusChat, and some said it was OK to leave it off. I live in a cold climate, and can avoid parking over combustible dry grass, etc. Any consensus? Thanks!
Sure, no problem - OEM manufacturers love to hang useless, redundant equipment on their mass produced lines. It just adds to the cost and the customers will pay for it anyways....... If you didn't get it, that was sarcasm........ There was a purpose for it. Will it effect the operations, unknown...... It's your car, do whatever you like with it....
Probably won't have a negative impact on the car itself assuming the heat transfer now doesn't impact neighbouring areas that the heat shield would of prevented/limited. Also depends on how you like to take care of your car. If it was a question of a few clips/screws which are pennies you don't need OEM parts. I personally would just replace them and secure it. No one is going to look after your property the way you do. Also why the hassle of having a thought in the back of your mind not to park in high dry grass or park here and there etc as you don't have a heat shield, seems counterproductive.
All mine in trash loooong time I drive in tall foilage almost daily . Quietly alongside deer, bears on tar river. Etc