Skip the auto shop - Our mechanics make house calls

Q: Loud sounds coming from the back of the car and can be heard only on the inside

asked by on

One day while I was driving on the highway and the spare tire that was on a truck in front of me, fell off from it and hit my car in the backseat area. My car continued to run fine and there were no issues with the transmission, engine or any leaking. But, it started to sound very loud. I thought the problem is with the tires so I had them replaced but the sound persisted. The noise can be heard from inside, not the outside, and it is getting louder. The noise changes as I accelerate, making it the loudest at around 55 mph but it gradually quiets down somewhat st higher speeds. This is not related to shifting and I had emissions checked, so that is all fine. The loud noise can be heard inside of the car, coming from the back. What could it be? I haven't been to the mechanic's as there are no other issues beside the noise. Thank.

A: Since I am not able to hear the noise, I am...

Since I am not able to hear the noise, I am taking a stab at this, but one common item that can make a noise would be a driveshaft center bearing. If the center bearing is going out it will resonate through the body as the bearing support is bolted to the body. So it may resonate louder inside the vehicle rather than the outside. Once again this a place to start, but you may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and expertise to diagnose the car noise more precisely in person.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hard to turn steering wheel

Hello. If the noise is like a groaning or squealing noise, then it sounds like the power steering pump has failed. I typically start by making sure that the belt on the engine is tight. If it is not, then...

Q: What is the recommended tire inflation pressure?

It is very important to always have your tires properly inflated. The proper tire inflation pressure is located on the Safety Compliance Certification Label or the Tire label, which are on the B-Pillar, near the door latch, or on the...

Q: Fuse box misplaced

Hi. There is also another fuse panel next to the side of the dash. The panel is removable and more fuses are located in that area. I recommend you have a mechanic, like one from YourMechanic, assist you with any...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.