10 Reason Your Car Shakes When Accelerating But not When

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Video Car shakes when accelerating but not when coasting

Over the years of usage, it is common if your car shakes when accelerating. But if your car is not that old and you are experiencing car shakes when accelerating but not when coasting, you need to have your vehicle checked.

To make sure your car is perfectly fine for driving, you need to act fast. There can be several reasons apart from being old for car shaking to occur.

The less periodic maintenance can be one of the primary reasons for a car shake and vibration. However, some internal issues can also lead to this problem.

If you want to save your car from any bigger damage, you should take your car shakes when accelerating transmission seriously.

In this article, we will be discussing various reasons that cause car shakes and some solutions that will help you overcome the issue.

Why a Car Shakes When Accelerating?

A car is nothing but a piece of machinery that not being taken care of gives out. It is normal for an old vehicle to shake during acceleration, but it is not a good sign if your new vehicle shows the issue.

People usually take good care of their brand new car. However, with time they pay less attention to the maintenance of their vehicle which ultimately leads to the poor performance of internal parts, and they experience their car shaking and vibrating.

But poor maintenance is not the only reason for car shakes when accelerating transmission. Sometimes it is a warning sign for some bigger issue in your ride.

Ignoring the sudden shake and vibrations in your car will harm you soon. But before you get all hasty and are ready to take your car apart, you need to understand the various reasons why your car shakes when accelerating at high speeds.

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Parts Responsible for Car Shakes When Accelerating

If you have no idea why your vehicle is acting up and causing so much shaking & vibrating, then don’t feel bad.

Not everyone is an expert on every matter. Locar Deals understand this, which is why we are here to help.

There are basic reasons for every occurrence in your vehicle. You don’t need to be an expert to learn about them.

To make you understand what causes your car to shake, we have a list of some parts that are responsible for car shakes when accelerating at low rpm.

Thus, whenever you feel your car is acting up again, you can look for these parts without wasting any time.

  1. Axles
  2. Callipers
  3. Driveshaft
  4. Motor Mounts

These are the small but crucial parts of a vehicle’s internal structure. They may be insignificant to your eyes but plays important role in keeping a vehicle up and running.

So next time your car begins to shake up, look out for these parts first.

10 Most Common Reason for Car Shakes When Accelerating But not When Coasting

If your car shakes when accelerating and idling, there could be different causes for it to happen. It is somehow common for an old car to show these symptoms.

But if a new car shows the symptoms, it is giving a warning at the first stage of a problem that can increase with time.

Thus, you need to fix it before any mishap happens. To make sure you can identify the issue, let us talk about different causes for car shakes.

1. Broken Motor Mounts

The first reason that might cause shake and vibration in your vehicle is broken motor mounts.

The main function of motor mounts is to help in sticking a vehicle’s engine to the frame of the vehicle.

Another purpose of the mounts is to decrease engine shaking so that the driver doesn’t feel the vibrations of the engine while driving.

These motor mounts are made up of hard rubber that allows them to absorb such immense shaking.

Thus, when your motor mount is damaged, it is obvious for the passengers to feel the shaking inside the car.

This is a major concern as if the mounts are not doing their job, it means the engine is not in its particular location leading to the misalignment of other parts in the engine.

2. Unbalanced Tires

Another reason your car shakes when accelerating can be the unbalanced tires of your ride.

If you have your tires changed, there is a possibility that they are not properly set. So, if such tires get attached to the wheel, they will not be able to handle the weight evenly.

This weight imbalance can lead to small vibrations. The higher the speed of your vehicle, the more observable the shake in it.

You can even feel your steering wheel shaking as the tires are unable to handle the mass.

Thus, if you feel your car is shaking at a constant speed & it escalates as your speed increases, your culprit might be an unbalanced tire.

3. CV Joint

The next cause for car shakes when accelerating from the stop is the CV Joint. Constant-Velocity Joints are present in outer and inner positions are located at the end of the axle points.

If there is any damage to the inner joints, one can see that their motor vehicle starts to shake under high acceleration.

Under more load, the shaking tends to get worse. Because of this wear & tear, the CV joints can get damaged.

Once damaged, it is easy for water & dirt to get indie the joints and contaminate the grease protecting the internal parts.

Once there is no proper lubrication, there will be excessive friction and eventually permanent damage to your car.

4. Loose Lug Nuts

Lug Nuts are the small circular shape metal thingy that is used to attach the tires to your cars.

It is very common to have a loose lug nut, particularly when changing a tire. Thus, if you feel your car is shaking after you have your tires changed, it is probably one of the tires that could be loose.

You need to understand that tightening and loosening of lug nuts are important. If the nuts are left untightened, the wheels become shaky, and you can feel your car shaking when accelerating.

Not only this, if you keep on driving with the loosened nuts, they can even fall off during the drive and can lead to an accident. Thus make sure every once in a while that your nuts are properly placed. Also, make sure you are using the nuts of the correct size.

5. Bent Axle

If you ever had hit your car somewhere or had a minor accident without any visible damage, don’t feel happy.

Damage during any hit is not always external. Sometimes it is the internal parts that take the effect of the force.

An accident or huge force can make the axle of your car bent. A bent axle generally leads to shaking of the vehicle, which will only get worse with time.

So, if your car is shaking, better check that axle. Because if left unattended, it will do a lot of damage to your car.

6. Loose Wheel Bearings

Loose wheel bearings are another reason that causes your car to shake. Wheel bearings lubricate the tires of your automobile to protect them from getting heated up.

If these bearings start to loosen up, you will see that your car is experiencing shakiness from the wheels.

It is dangerous as it makes your car less stable.

7. Disconnected Vacuum Hose

A disconnected vacuum hose will cause severe shaking and noise during driving. However, a car shake is not all a disrupted vacuum hose does.

If your disconnected vacuum hose develops an air leak because of weathering, then it can lead to a lack of air pressure which can further lead to sensor failure, which ultimately can cause power loss, even fire, and more.

8. Worn Spark Plugs

Spark plugs are the waking hands of your engine. If the spark plugs are damaged, then they can cause the engine to backfire. You can access this issue as you are at a stop, and even during driving, you will feel as if your vehicle is shaking.

9. Poor Propeller Shafts

The work of propeller shafts is to deliver power to the tire from the engine. If there is an issue with the proper shaft, it is common for your car shakes when accelerating and braking.

10. Stuck Brake Calliper

The final cause of your car shaking when accelerating is the stuck brake calliper. The brake calliper is there to handle your wheels via the steering wheel.

But if your brake calliper is faulty, it will cause stickiness to the tires and cause more troubles.

The easy way to access this issue is that it will lead your steering wheel to shake as it passes its base speed. The vibration gets worse when you accelerate to a higher speed. Not only this, you will even sense a burning odour when your car comes to a stop.

How to Fix for Car Shakes When Accelerating?

Now that you are aware of the different reasons for car shakes when accelerating, it is time to learn about the solutions for those causes.

You need to know that every problem is severe & not every issue is minor. You may be able to fix some issues on your own, whereas for some, you might need professional assistance.

So try to keep an open mind and learn from your mistakes to be fully prepared in the future.

– Tires

For unbalanced tires that might be causing your car to shake, you need a jack, a screwdriver, and a lug wrench.

  • First, you need to remove the tire weights.
  • Follow the step by removing the tires.
  • Now clean the tires perfectly.
  • After all the cleaning, it is time to put the tires back in their marked spots and put the weight back on.
  • Check multiple times to properly adjust the wheels.

The final step is to return the tires into their exact position

– Joints

To fix the car shaking issue caused by the CV joints of your ride, you need to remove the driveshaft and examine the movements of the joints.

Check out the lubrication between the joints as well. If you find rustic touch or not enough greasiness, you need to have them replaced as soon as possible.

– Spark Plugs

  • If you are sure that your car shakes when accelerating but not when coasting is due to its spark plugs, then the first thing you need to do is locate it.
  • After you have discovered them, you need to remove them and replace them with new ones.
  • Make sure you are using the correct plugs.

– Greasiness

As you read above, being low on lubrication can lead to different parts acting out and cause friction.

Thus, you need to check your transmission fluid level and change it. But there are things that you need to take care of:

  • Always turn your car off when changing the oil or fluid.
  • Use the fluid which is right for your engine. You can look for it in your vehicle’s owners manual to be sure.
  • Do not go overboard with the fluid.
  • After pouring, start the engine for a minute or two to have fluid move around the parts.

To learn about oil change, you can refer to our article about How Much Oil Does My Car Need?

– Other

For the remaining issue like the broken axle, brake calliper, etc., you may need professional help.

These are the issues that require extreme mechanical knowledge and expertise. Not only this, the work is time-consuming as well.

So if you don’t have time to spare and are not much of an expert on the mechanical front, taking your car to a garage for a fix is the best solution.


Car shaking is one of the most common & most ignored issues of motor vehicles. Being a piece of machinery, people don’t pay much attention to it.

However, this negligence is what leads to fatal outcomes later on. In this article, we tried to answer everything associated with why a car shakes when accelerating.

We hope these bits of advice from our experts help you out. If you have any questions, ask in the comments below.

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