I can hear rattling, like something is loose, when I drive.
If you hear a rattling, multiple things could be causing this issue. The most likely cause would be a broken exhaust shield or mount. When these exhaust shields break, they will cause a rattling sound. When the exhaust mounts break, the whole exhaust system will move side-to-side, causing a rattling sound. It is also possible to hear a rattling sound from loose suspension parts. I would recommend having the whole underside of your vehicle inspected by a professional to track down the cause of your rattle. If it is suspension related, have the repair done as soon as possible, as loose suspension parts can be a safety issue.