Humming Noise in Car Getting Louder with Speed (Here is Why)

You are a longtime driver, surely you have met Humming Noise in Car Getting Louder with Speed . The most straightforward way to tell if the noise is typical is to ask yourself if you’ve heard it before. But what if the noise is entirely new? If the vehicle appears too noisy, there is a problem.

An automobile might make excessive noise for various reasons, many of which are symptoms of a more significant underlying problem. Here we’ll explain why your car makes a buzzing or humming noise while driving and how to fix it.

What are the Reasons for Humming Noises?

Humming Noise in Car Getting Louder with Speed

All vehicles have slightly varying drivetrain and engine arrangements, but they all have the same essential components, except electric cars. Due to its engine design, Subaru is more sensitive to knocking from worn pistons than other automobiles.

You can look at the degree to which these components degrade and become noisy during acceleration by their use rather than the car manufacturer. Below are some common reasons behind the humming noise and their underlying malfunctions.

Problems in the Wheel

The typical causes are a faulty wheel bearing or a cut tire tread. If the noise is more “growly,” a bad wheel bearing is most likely to blame. The noise may become louder as you travel faster.

However, if the noise gets louder as you go faster, it could be a symptom of the chopped tread. It is frequently a result of the following two options.

  • The tire rotation is lacking.
  • A suspension component has failed.

It can be difficult to tell whether the noise comes from a wheel bearing or a tire. However, there is something you can do. Slightly turn the steering wheel to the left or right. If the noise worsens, one of the bearings of the wheels is most likely to blame.

If the wheel bearings and tires appear decent, you should inspect the drivetrain.

Issues in the Drivetrain

There are a few additional technical reasons to mention. The “drivetrain” is a term that refers to a group of components in your car. The gearbox, axles or drive shafts, torque converter, and differentials are among these elements. A humming or growling sound could indicate a problem with the powertrain.

The engine is sometimes part of the powertrain, but we’ll get to that later. The drivetrain propels your car forward, and all of these components move when it does. Any of the drivetrain’s features can wear down and begin to generate noise. 

Wear causes the pieces to interact in ways they weren’t planned for. As a result, you will listen to audible noises. These noises are more noticeable when accelerating, like exhaust noises, because the automobile is trying to get you up and running quickly.

Malfunctioning of the Drive Belt

Noise from the belt usually sounds like squeaking or squealing. When you first start to speed, and sometimes when turning, you’ll hear this noise. These noises are more common in some automobiles than in others. Drive belt wear can occur in any vehicle. 

The driving belt consists of a rubber compound that eventually wears out. Belt noise could also indicate that the belt is worn or slack. Belt noise can also occur when the belt pulley begins to fail. When the belt no longer runs smoothly along with the pulleys as the automobile accelerates, it generates noise.

Exhaust Problems and Leaks

Another sound you may be familiar with is a noisy exhaust system. The exhaust system contains the muffler, resonator, catalytic converter, and header/downpipe. The exhaust system is responsible for transporting exhaust gasses from the front to the back. Manufacturers create them this way to prevent you from inhaling exhaust fumes. It also reduces engine sound.

A leak somewhere in this system produces a distinctive rumbling sound. The noise becomes more noticeable because the engine is working harder during acceleration. The muffling of the noise is cut short by an exhaust leak, producing the sound more assertive.

Even though all cars have exhaust systems, Hondas are more prone to exhaust leaks throughout their lives than any other automobile.

Also Read: Squeaking Noise While Driving but Not Brakes Applied (Here is what to do)

What to Do When You Notice the Humming Noise?

What to Do When You Notice the Humming Noise

Pay attention to what happens before and after the car produces the noise. Provide your technician with the necessary information. Understanding the problem is only possible with a complete, professional evaluation. Don’t ignore the noises until your vehicle is inspected by a professional.

Keep track of when the noise occurs so you can better assist your mechanic in diagnosing the issue. The car that makes a humming noise will need lubricants. The transmission may collapse, and it will damage the universal joints. The wheel bearing can also be faulty.

How to Fix the Humming Noise?

The cause of the issue will determine the type of repairs required. Belt noises are usually simple to identify and inexpensive to repair, with a few exceptions. The car is ready to go once the mechanic attaches the replacement belt and sets the proper tension. A leak must first be located and corrected in the case of exhaust leakage. The majority of leaks necessitate the replacement of one or more exhaust components.

They’re then inspected again to ensure no more leaks and adequately seal the new pieces. Repairing the drivetrain, particularly the engine, can be more difficult. You must replace parts in various circumstances involving the drivetrain. You can acquire second-hand parts for significant components like the engine and transmission to keep prices as low as feasible.


Vehicle safety is always paramount for you, your passengers, and other drivers. Any noise your vehicle makes could indicate that it is currently unsafe to drive. Many of the noises we discussed aren’t directly dangerous, but the final effect might be the vehicle stalling unexpectedly.

Always be alert of your surroundings when driving; if Humming Noise in Car Getting Louder with Speed, check it out as soon as possible.

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