Skip the auto shop - Our mechanics make house calls

Q: hard thud when driving

asked by on

Test drove a car. Had kind of a thud when starting out. Seller said it was a brake caliper slide sticking. He just had the brakes done at Monroe. Does that sound right?,I'm concerned it could be the transmission. Thank you for your assistance.

My car has 125000 miles.
My car has an automatic transmission.

Hello. A sticking brake caliper slide can cause the car to seem like it is losing power, but it will not usually cause a thud noise. From my experience with this car, thuds are almost always from worn out engine and transmission mounts, a bad CV axle, or the transmission failing. I typically inspect the mounts for wear first and then check to see if there is excessive play in the CV axle joints. If those are fine then it may be the transmission. Getting the vehicle on a hoist and running it to see where the noise is coming from helps. If you wanted to have this looked at before you buy it, consider YourMechanic, as a certified mechanic can come to the vehicle and give the car a full pre-purchase inspection so that you can buy with confidence.

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!
  1. Home
  2. Questions
  3. hard thud when driving

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: Car won't accelerate - 2005 Hyundai Tucson

Hi there. Although it's hard to diagnose a problem remotely, I believe the root issue that may be causing most of the acceleration problems are overheating issues. Sometimes when an engine overheats, it triggers and error code to trim back...

Q: Check engine light on.

You will need to have the vehicle tested and checked to see if the camshaft advancing control is the cause of the camshaft codes. The code you received only tells you there is an issue with that cams timing alignment....

Q: Where is the clothes hanger?

There is a clothes hanger above each rear seat, directly next to the handle. To access a clothes hanger, simply pull down on the hanger.

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.