Exhaust rattles over speed bumps but sounds fine on the road, what is loose?

#1 · octubre 20, 2026, 7:58 am

Cita de dayanlee en octubre 20, 2026, 7:58 am
I have a small mystery with my 2017 Infiniti QX50 and I would like to hear if anyone had the same thing. The car has about 87,000 kilometers, and for a week now there has been a metal rattle under the car every time I go over a speed bump or a rough patch near my building. On the highway it is perfectly quiet, no roaring, no strange smell, nothing. My first thought was a loose heat shield, because I remember my old car doing that. My brother says it is probably nothing and I should just turn up the radio. My neighbor says a rattle from the exhaust can mean a broken hanger, and if I ignore it the whole pipe can sag and crack. Then a friend told me it could be inside the muffler, like a broken baffle, which sounded expensive. I lay on the ground with my phone flashlight, which was not a proud moment, and I think one of the rubber hangers near the back looks stretched and a bit cracked, but I honestly cannot be sure what I am seeing. I read a page from a workshop in Mussafah about exhaust problems on Infiniti cars, and it explained that loose brackets, worn rubber mounts and rusted joints are common reasons for rattles, and that many of these are small jobs if caught early. That made me feel calmer, but I still want a proper opinion. Since I drive around the city every day, I typed Genuine exhaust repair for Infiniti models in Abu Dhabi into my phone one evening, mostly to see what a basic check includes and whether they use original parts or cheap copies for something as small as a hanger. So here is what I want to ask. Is a rattle only over bumps usually a cheap fix, or can it hide a bigger problem? Can I drive for a few weeks like this, or will the pipe slowly get damaged? Also, how do you tell a heat shield rattle from a muffler problem without opening everything? One more thing, do workshops lift the car and show you the loose part, and is that something they charge extra for? If you had the same rattle on your Infiniti, please tell me what it was and what you paid. Thanks everyone.

I have a small mystery with my 2017 Infiniti QX50 and I would like to hear if anyone had the same thing. The car has about 87,000 kilometers, and for a week now there has been a metal rattle under the car every time I go over a speed bump or a rough patch near my building. On the highway it is perfectly quiet, no roaring, no strange smell, nothing. My first thought was a loose heat shield, because I remember my old car doing that. My brother says it is probably nothing and I should just turn up the radio. My neighbor says a rattle from the exhaust can mean a broken hanger, and if I ignore it the whole pipe can sag and crack. Then a friend told me it could be inside the muffler, like a broken baffle, which sounded expensive. I lay on the ground with my phone flashlight, which was not a proud moment, and I think one of the rubber hangers near the back looks stretched and a bit cracked, but I honestly cannot be sure what I am seeing. I read a page from a workshop in Mussafah about exhaust problems on Infiniti cars, and it explained that loose brackets, worn rubber mounts and rusted joints are common reasons for rattles, and that many of these are small jobs if caught early. That made me feel calmer, but I still want a proper opinion. Since I drive around the city every day, I typed Genuine exhaust repair for Infiniti models in Abu Dhabi into my phone one evening, mostly to see what a basic check includes and whether they use original parts or cheap copies for something as small as a hanger. So here is what I want to ask. Is a rattle only over bumps usually a cheap fix, or can it hide a bigger problem? Can I drive for a few weeks like this, or will the pipe slowly get damaged? Also, how do you tell a heat shield rattle from a muffler problem without opening everything? One more thing, do workshops lift the car and show you the loose part, and is that something they charge extra for? If you had the same rattle on your Infiniti, please tell me what it was and what you paid. Thanks everyone.