Car Makes Noise When Accelerating? Here’s How to Fix It

Hearing weird noises from your car when you hit the gas can be worrying. A squeal or rumble could mean something’s not right under the hood. Our guide lays out common car sounds and fixes so you can drive without stress.

Different Types of Noises Your Car Can Make When Accelerating

From squeaking or squealing belts to thumping or slapping tires, there are various noises your car can make when accelerating, each indicating different issues that need attention.

Identifying the type of noise and its potential cause is essential to address any problems adequately.

Squeaking or squealing (belt issues)

One old and and worn out serpentine belt is compared beside a new one.

Your car’s engine belt could be the reason for a squeaking or squealing noise when you hit the gas. This sound happens if the belt is loose or worn out. It needs to be tight so everything works right inside your engine compartment.

A good belt keeps things moving without any loud noises.

Hearing high-pitched sounds, like someone blowing a whistle, might mean your serpentine belt is slipping. This can lead to more significant problems under the hood. Check this out fast because belts are essential for keeping different engine parts running smoothly and quietly while you speed up.

If they’re broken or not tight enough, replace them soon so you can drive without all that racket!

Thumping or slapping (tire issues)

A brand new tire is placed next to a badly worn one.

When handling tire issues like thumping or slapping noises, it is pivotal to consider the potential causes. Loose lug nuts or a flat spot on the tire can lead to these disconcerting sounds during acceleration.

Additionally, worn-out tires with uneven tread wear can also result in a thumping noise when driving. It is crucial to promptly address these concerns as they compromise traction and steering control while driving.

It’s important to note that ignoring tire-related noises may worsen the issue and pose safety hazards. Regularly inspecting your tires for signs of wear and ensuring proper inflation levels can help prevent unnecessary noise issues when accelerating.

Ticking or clicking (low oil levels)

Checking the engine's oil level.

ticking or clicking noise when accelerating could indicate low oil levels in the engine. Low oil can increase friction and wear on engine components, causing a distinct clicking sound as you accelerate.

It is crucial to check your oil level regularly and top it up as needed to prevent potential damage to the engine.

Rattling or pinging (wrong gasoline octane)

Various gas pump nozzles.

Using the wrong gasoline octane can cause rattling or pinging sounds when accelerating, leading to potential engine damage. Pre-detonation, also known as engine knock, occurs prematurely due to the fuel igniting.

This generates a rattling noise during acceleration and can harm the engine if not addressed promptly using the correct gasoline octane.

Whistling (vacuum or hose issue)

An old cracked hose.

whistling noise when accelerating may indicate a vacuum or hose issue in your car. This could be caused by a leak in the vacuum system or a cracked hose, leading to air escaping and creating a whistling sound.

Addressing this promptly is essential, as it can affect your vehicle’s performance and fuel efficiency. A professional mechanic can inspect to identify the issue’s source and make necessary repairs, ensuring your car operates smoothly without any unusual noises.

You should seek professional assistance immediately if you notice a high-pitched whistling noise when accelerating.

Roaring or humming (loose wheel bearings)

A wheel bearing assembly.

Loose wheel bearings can cause a loud roaring or humming noise when accelerating. These crucial components support the vehicle’s weight and allow the wheels to spin freely. They produce a noticeable sound indicating potential safety hazards when worn or loose.

A professional mechanic must promptly address the issue to prevent further damage to the vehicle. Ignoring this problem may lead to more extensive and expensive repairs in the long run.

Ensure your safety by addressing any roaring or humming noises promptly—getting professional help is essential in resolving issues with loose wheel bearings, which guarantees smooth functioning and prevents potential risks on the road.

Common Causes of Noises When Accelerating

Exhaust system issues, engine issues, and serpentine belt issues are common causes of noises when accelerating. These problems can lead to various sounds, such as rattling, humming, or clicking.

Addressing these issues promptly can prevent further damage to your vehicle.

Exhaust system issues

The muffler underneath a car.

The exhaust system can cause a rumbling noise, indicating potential issues with the catalytic converter or muffler. A loose or damaged heat shield can create a rattling noise during acceleration.

An improperly functioning exhaust gas recirculation (EGR) valve can result in engine knocking noises when accelerating, affecting overall vehicle performance.

Maintaining proper maintenance schedules and promptly addressing unusual exhaust noises is crucial for preventing more extensive damage and costly repairs. Regular inspections by a qualified mechanic will help identify and resolve any underlying issues with the exhaust system, ensuring optimal vehicle performance and longevity.

Engine issues

Engine issues when accelerating can lead to various noises, such as clicking or clunking, indicating potential problems. Loud squeaking or whining could imply loose or worn engine belts needing attention.

Rattling during acceleration might signal pre-detonation, knock, or ping issues requiring diagnosis and resolution.

Growling noise from the engine while accelerating denotes a potentially serious problem that demands immediate inspection and repair. Loose serpentine belts can create a loud noise when starting the car, pointing to belt-related complications that must be addressed promptly.

Serpentine belt issues

worn or loose serpentine belt can cause a loud squeaking or whining noise during acceleration. This could indicate the need for tightening or replacing the belt. A noticeable noise when turning on the car or accelerating may signal issues with the serpentine belt, requiring prompt attention to prevent potential damage to the engine.

It is important to address any unusual noises promptly, as problems with belts can lead to more severe issues if left unattended. Loose or worn-out serpentine belts are common culprits of car noises when accelerating, so regular checks and maintenance are essential for smooth vehicle operation.

How to Identify Whether a Noise While Accelerating is Normal or a Sign of a Problem

Listen for any changes in the noise while driving, pay attention to the type of noise and where it is coming from, and check for any warning lights on your dashboard to determine if the noise is normal or a sign of a problem.

Pay attention to the type of noise and where it is coming from

Identify the noise your car makes – such as squeaking, clicking, or rumbling – and pinpoint its origin in the engine compartment or wheels. Notice any pinging sounds during acceleration, which may indicate issues with fuel quality or pre-detonation.

Listen for a loud humming or whirring noise while accelerating, pointing to potential problems with the bearings or exhaust system. Check for any warning lights on the dashboard as well.

Ensure you notice any unusual sounds from the engine belts when accelerating, deafening squealing, or flapping noises, which could signify loose or worn-out belts needing immediate attention.

Check for any warning lights on your dashboard

Check engine light on dashboard is on.

Scan your dashboard for warning lights, as they can indicate potential engine or other vital systems issues. Missing or ignoring these warnings can lead to more severe problems.

Address any illuminated warning lights promptly to prevent costly damages and repairs.

If any warning lights are lit on your dashboard while accelerating, it’s crucial to have your vehicle checked by a professional mechanic immediately. Ignoring these signals may damage critical components of your car’s engine and overall functioning.

Listen for any changes in the noise while driving

While driving, pay attention to any alterations in your car’s noise. Changes in the sound can indicate varying degrees of issues within your vehicle, which may require immediate attention.

Suppose you notice a significant shift in the intensity or pattern of the noise while accelerating. In that case, it is crucial to promptly address and diagnose this change to prevent potential damage to your car.

When behind the wheel, maintain awareness of any shifts in the noises emanating from your vehicle during acceleration. Even subtle changes could signify underlying problems that need prompt examination and resolution by a professional mechanic.

Steps to Fix Noises When Accelerating

Take your car to a professional mechanic to diagnose and fix the issue. Replace worn-out parts like the exhaust system, engine components, or serpentine belt. Properly maintain your vehicle with regular oil changes and tune-ups to prevent future issues.

Get your car checked by a professional mechanic

Have a professional mechanic examine your car to diagnose and fix any issues causing noises while accelerating. The mechanic can pinpoint the noise source using their expertise and specialized tools, ensuring an accurate diagnosis.

Consulting a professional ensures that any underlying problems are effectively addressed, preventing further damage to your vehicle and promoting its longevity.

Replace worn-out parts (exhaust, engine, serpentine belt)

If the noise persists after a professional inspection, consider replacing worn-out parts such as the exhaust, motor, or serpentine belt. Neglecting these components can lead to more severe issues and later repair costs.

Regular maintenance is crucial for keeping your car in good condition. By replacing worn-out parts promptly, you can prevent further damage and ensure a smoother driving experience.

Properly maintain your vehicle (regular oil changes, tune-ups)

Maintain your car with regular oil changes and tune-ups to prevent potential issues. Frequent oil changes help keep the engine lubricated, ensuring it runs smoothly and reduces wear on moving parts like bearings.

Likewise, tune-ups address minor problems before they become major ones, keeping belts and hoses in good condition, maintaining fuel efficiency, and extending the life of your vehicle’s engine.


Why does my car make a loud noise when I step on the gas?

Your car might make a loud noise like grinding, knocking, or popping sounds because it could have engine belt issues, broken bearings, or use low-grade fuel.

What should I do if there’s a squeaking noise when accelerating?

If your car is making squeaking or squealing noises while you speed up, check for loose belts in the engine compartment and get them tightened or replaced.

Can humming noises from my car be serious?

Yes, a humming or whirring sound can mean something’s wrong with your vehicle. It could be simple tire noise or something as serious as transmission trouble needing fixing.

How can I stop a flapping sound when driving faster?

A flapping noise that gets louder when accelerating often comes from objects stuck in the car’s undercarriage or wheel wells; removing these objects can help you fix the problem.

What makes my car sound rumbling as it speeds up?

A rumbling noise during acceleration suggests exhaust system malfunctions, such as holes in the muffler; getting these parts checked and fixed should solve this issue.


In conclusion, addressing car noises when accelerating is crucial to prevent potential damage. Noises like squeaking or rattling may indicate serious issues that need repair. Professional mechanics can diagnose and fix engine belt or exhaust system problems.

Regular maintenance and prompt repairs can keep your vehicle running smoothly. Taking action on unusual noises will help maintain your car’s performance and ensure a safe driving experience.