6 Problems That Start When the Transmission and Engine Mounts Fail

October 31, 2025

Your engine and transmission mounts are small but critical parts that keep your vehicle’s powertrain stable. These mounts secure the engine and transmission to the car’s frame, absorb vibration, and help keep everything properly aligned. When they start to fail, it might not seem like a big deal at first, but small symptoms can quickly grow into much bigger problems.


Here are six issues that often begin with worn or broken engine and transmission mounts.


1. Excessive Vibration Inside the Cabin


One of the first signs of a bad mount is vibration. You might feel it through the steering wheel, seat, or even the floorboards, especially when the car is idling or accelerating. Mounts are designed to absorb engine movement, and when they no longer do their job, the vibration transfers directly into the chassis.


If ignored, this can affect driving comfort and eventually shake loose other components.


2. Clunking or Banging Noises When Shifting or Accelerating


A broken mount can let the engine or transmission shift slightly when you hit the gas or shift gears. This movement can create a clunking sound or a noticeable jolt. If you hear these noises consistently during acceleration or gear changes, it’s time to get the mounts inspected.


These sounds often get worse over time as the mounts wear further or separate entirely.


3. Misaligned Drivetrain and Poor Handling


When mounts wear unevenly or shift out of place, it can affect how the engine and transmission sit within the vehicle. This misalignment can throw off your car’s balance and handling. You might notice the vehicle pulling slightly to one side, especially during hard acceleration or braking.


Misalignment also adds strain on other parts of the drivetrain and suspension.


4. Accelerated Wear on Hoses, Wiring, and Connectors


If the engine or transmission is moving more than it should, connected components move with it. This can stretch or tug on hoses, wiring, and brackets that were never meant to flex. Over time, that movement can lead to cracked hoses, frayed wires, or broken plastic clips.


These secondary failures often appear after mounts have been worn for a while.


5. Shifting Problems in Automatic Vehicles


In automatic vehicles, bad transmission mounts can make shifting less smooth. The transmission may seem to "clunk" into gear or take longer to engage. In some cases, the transmission fluid lines may also be affected, causing shifting issues or even leaks.


Even if the transmission itself is fine, a failing mount can mimic or create shifting problems.


6. Increased Engine and Transmission Stress


When mounts can no longer hold things in place, other parts start picking up the slack. The engine might sag slightly, putting pressure on joints or brackets. The transmission could move enough to misalign with the driveshaft. Over time, this extra movement puts unnecessary stress on components that were never designed to flex.


This can lead to damage that’s far more expensive than a simple mount replacement.


How to Tell If Mounts Are the Problem


Sometimes the signs of worn mounts are obvious, like vibration or noise. Other times, the symptoms appear gradually. A technician can quickly inspect the mounts for visible cracks, sagging, or signs of separation. In some cases, mounts may appear fine but are soft or collapsed under load.


The earlier the issue is caught, the easier and less costly it is to fix.


Get Expert Mount Replacement at Complete Auto Repair in Bremerton, WA


If your car is making odd noises, vibrating more than usual, or just feels off when shifting or accelerating, we can help. At Complete Auto Repair in Bremerton, our technicians can inspect your engine and transmission mounts and recommend the right fix before damage spreads.


Book a visit today and keep your vehicle running smoothly with repairs you can trust.

5 Overlooked Signs Your Car’s Suspension Is Wearing Out | Complete Auto Repair
September 26, 2025
Complete Auto Repair in Bremerton, WA, points out five often-missed warning signs that indicate suspension wear and the need for service.
Why Is Fall the Best Time For Car Detailing? | Complete Auto Repair
August 29, 2025
Complete Auto Repair in Bremerton, WA, explains why fall is the ideal season for professional car detailing to protect your vehicle’s finish.
How Do Lift Kits Affect Ride Quality or Handling? | Complete Auto Repair
July 25, 2025
Complete Auto Repair in Bremerton, WA, explains how installing a lift kit can impact your vehicle’s ride quality and handling performance.
What You Need to Know About Hybrid Battery Life and Reconditioning | Complete Auto Repair
June 27, 2025
Complete Auto Repair in Bremerton, WA, shares tips on extending hybrid battery life and how reconditioning can save you money.
Why Is My Check Engine Light Flashing, Not Just On? | Complete Auto Repair
May 30, 2025
Complete Auto Repair in Bremerton, WA, explains why a flashing check engine light is more urgent than a steady one—and what to do immediately.
6 Driving Habits That Damage Your Vehicle Over Time | Complete Auto Repair
April 25, 2025
Complete Auto Repair in Bremerton, WA, reveals six common habits that slowly wear down your car and how to avoid them.
Why Does My Car’s Steering Feel Loose? | Complete Auto Repair
February 28, 2025
Complete Auto Repair in Bremerton, WA, explains why your car’s steering feels loose. Learn common causes and when to seek professional repairs.
How Do Hybrid Cars Work, and Are They Right for Me? | Complete Auto Repair
January 31, 2025
Complete Auto Repair in Bremerton, WA, explains how hybrid cars work and helps you decide if they’re the right choice.
How to Keep Your Car Rust-Free | Complete Auto Repair
December 20, 2024
Discover effective ways to prevent car rust and protect your vehicle. Learn essential tips on maintaining your car’s exterior and interior to avoid costly repairs.
The Dangers of Engine Sludge and How to Avoid It | Complete Auto Repair
November 29, 2024
Complete Auto Repair discusses the dangers of engine sludge and how to avoid it. Learn essential tips to keep your engine clean and running smoothly.