Said It Here

Metal scraping noise and fluid leak under car

Debris can get jammed into the bottom of a vehicle while driving, causing sudden scraping noises and unexpected fluid leaks. Not knowing what these unknown objects or leaks are makes it difficult to determine whether it is safe to drive or requires immediate attention.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    Testing the hardness of the object with a tissue paper
  2. 2
    Deep cleaning the room to check for additional pieces

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/CleaningTips1 person · September 2026

I happened to notice these on the floor last night.source ↗

I tried to squeeze one with a tissue paper and it was extremely hard, like the feeling of a rock.source ↗

No-Shoulder-4285 · r/CleaningTips · 26 upvotes
r/MechanicAdvice1 person · September 2026

I was driving and suddenly I started hearing scraping. So I stopped and saw this thing sticking out of the bottom of my car.source ↗

There was also fluid leaking near the front as well. Does anyone have any idea what it is?source ↗

microcat45 · r/MechanicAdvice · 1 upvotes

Is it common for stuff to just get jammed in the bottom of your car like that?source ↗

microcat45 · r/MechanicAdvice · 1 upvotes

Where this came up

People with this problem also raised