Bumper too low!?!?

it depends on the height of the wheel stop, but it could be the bumper. you would have to measure some gen 2's.
many people get caught on them, so it is very possible there is nothing wrong with the bumper height.

 

There was once a guy on here who would troll anyone with this common problem. He'd explain how his car doesn't have any scratches on it and he's never once scraped the front underside of the car... So annoying! As for the rest of us, the scraping is the sound that tell us to stop and we periodically get under the car with some smalls screws and a screwdriver gun to keep the withering splash shield from coming loose on the freeway. You can also re-order aftermarket replacement shields online for cheap.

 

I've never used those 'wheel stops' as actual wheel stops. I rarely ever even let my front bumper get within 6 inches of them, much less over them, lol. Not like a prius is a tight fit in a parking spot and needs to be as far forward as possible. An old land yacht like a '77 lincoln maybe, but a prii.

As for the rest of us, the scraping is the sound that tell us to stop.

I love this. and it made me laugh at how true it is sometimes.
First thing I thought of was the sound of cars crunching so I can apply brakes, but I know what you mean.

 

My favorite part is how much attention everyone gives me the times when the splash shield is at its worst and makes a loud breaking sound when backing out.

 

Yep, it's annoying when I've been driving my Tundra around then hop into the Prius and drive up too close to those things...and hear that scrap!
Another reason for adding a 2-3" lift kit to my AWD!!!

 

Off Road Prius Kit is on my wish list. But life is first. Lol.