Skip the auto shop - Our mechanics make house calls

Q: Hi, I am hearing a very loud "rolling thunder" noise while driving that gets louder at higher speeds.. What could be the issue?

asked by on

No noise at idle, "rolling thunder" noise gets louder as speed increases... Just wondering possible causes and how serious... Thank you!!

My car has 138000 miles.
My car has an automatic transmission.

Hello. There are several components that will cause these noises when accelerating. Typically they are related to the exhaust system. You may be experiencing an exhaust leak for one option. This can occur when a hole has found its way into any part of the system. Holes can form as a result of rust, damage, or a failed connection. They are not terribly uncommon. Has the vehicle driven any differently since this started? Did this happen suddenly or was it gradual? Your muffler is also a critical component that is designed to quiet down the noise from the exhaust. If this has failed the engine will sound louder and have an undeniable "rumble". Do a full inspection of the exhaust system and use your results to help identify the problem.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Hi, I am hearing a very loud "rolling thunder" noise while driving that gets louder at higher speeds.. What could be the issue?

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: Windshield wipers not working

Hi. There are a number of reasons why the wipers would stop working on your car. Most of the time if they stop all together it is because you have a blown fuse. The fuse typically blows because the motor...

Q: TOD check light

Hello. There are some common issues that can cause this to occur. Most of the time it is because the transfer case has an internal failure. The first thing that I would do is drain the fluid and inspect its...

Q: How do you figure out which engine mounts actually need replacing?

With all most 200k miles you most likely have all four mounts needing replacement. The first thing to do is to physically look at each one and look for rips or tears in rubber, sagging or oil soaked. Once all...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.