Why Does My Car Shake When I Accelerate

Car shaking during acceleration is a common issue faced by vehicle owners. When you experience vibrations in your car, it can be concerning and frustrating. These vibrations can be caused by various factors, including issues with the suspension, engine, or transmission. This article aims to help you understand the reasons behind car shaking, as well as provide you with some tips on how to address this problem.

Important Outline

To understand why your car shakes when you accelerate, we will delve into the following topics:

1. Faulty spark plugs
2. Unbalanced tires
3. Suspension issues
4. Worn out CV joints
5. Engine problems

Faulty spark plugs

Spark plugs play a critical role in your vehicle’s ignition system. They create a spark that ignites the air-fuel mixture in the engine, allowing your car to run smoothly. However, if your spark plugs are dirty or worn out, they may not ignite the air-fuel mixture efficiently, leading to poor performance and shaky acceleration. Replacing faulty spark plugs can help to alleviate this problem.

Unbalanced tires

If your tires are not properly balanced, you may experience a shaking sensation while accelerating. When tires are correctly balanced, they wear evenly and provide optimum performance, but if they are unbalanced or misaligned, they can cause vibrations that become more severe as you pick up speed. Having your tires periodically balanced and aligned can help in eliminating this issue.

Suspension issues

Your car’s suspension system is responsible for maintaining stability, control, and comfort while driving. However, over time, key components of the suspension may wear down, loosen, or become damaged. These issues can lead to an uncomfortable and shaky ride, particularly when accelerating. In this case, it is essential to have your suspension components checked and replaced if necessary.

Worn out CV joints

The constant velocity (CV) joints are part of your vehicle’s drivetrain, allowing power to be transferred from the engine to the wheels while maintaining a constant velocity. When the CV joints wear out, they can cause your car to shake upon acceleration. If you notice a vibration alongside a clicking or clunking sound, especially when turning, it’s a strong indicator that your CV joints may be the culprit. Replacing worn-out CV joints is crucial to address this issue and prevent further damage.

Engine problems

Lastly, engine problems can also lead to shaky acceleration. Issues such as worn-out engine mounts or a clogged air, fuel, or exhaust system can all result in a vibrating car when you press the gas pedal. Diagnosing and addressing these issues in a timely manner is essential not just to prevent shaking but also to maintain the proper functioning of your vehicle.

In conclusion, when your car shakes during acceleration, it is essential to identify and address the root cause of the issue. By understanding the potential factors that may cause this problem, such as faulty spark plugs, unbalanced tires, suspension problems, worn-out CV joints, and engine issues, you can take the necessary steps toward restoring a smooth and comfortable ride.

Step by Step Guide

To determine the cause of your car shaking when you accelerate, you can follow this step-by-step guide to identify and potentially solve the issue:

1. Inspect the tires: Check for uneven wear, proper inflation, and balance. Your tires should be in good condition and properly aligned to eliminate shaking caused by poor wheel balance. If necessary, have the tires balanced and aligned by professionals.

2. Examine the spark plugs: Inspect the spark plugs for signs of wear, corrosion, or damage. If they appear worn or damaged, replace them to ensure efficient ignition and smooth acceleration.

3. Check the suspension: Inspect the suspension components, including the shock absorbers, springs, and ball joints. If any of these parts are worn or damaged, have them repaired or replaced.

4. Inspect the CV joints: Look for signs of wear or damage in the CV joints, such as torn boots or leaking grease. If the CV joints are worn out or damaged, have them replaced.

5. Diagnose engine issues: Check for issues with the engine mounts or clogged air, fuel, and exhaust systems. If you find any problems, have them repaired by a professional.

Step by Step Guide with Bullet Points

– Inspect the tires
– Check for uneven wear
– Ensure proper inflation
– Check wheel balance and alignment
– Examine spark plugs
– Look for wear or corrosion
– Replace if necessary
– Check the suspension
– Inspect shock absorbers
– Check springs and ball joints
– Repair or replace worn components
– Inspect CV joints
– Look for torn boots or leaking grease
– Replace if damaged
– Diagnose engine issues
– Check engine mounts and clogged systems
– Repair if needed

Pros and Cons

Addressing the car shaking issue has its benefits and potential drawbacks.


– Improved vehicle performance
– Enhanced safety
– Reduced risk of further damage
– Increased comfort while driving


– Cost of repairs or replacements
– Time-consuming diagnosis process
– Potentially recurring issue if not properly addressed


Q: Can I still drive my car if it shakes while accelerating?
A: Although it might be possible to drive with some shaking, it’s generally not advised, as it could lead to further damage and compromised safety. Address the problem as soon as possible.

Q: How often should I check my car for potential issues?
A: A regular maintenance schedule, as recommended by your car’s manufacturer, will help identify and prevent issues early. This often includes checking tires, spark plugs, and suspension components.

Q: Do I need to take my car to a professional mechanic to solve the shaking problem?
A: While you may be able to diagnose the problem yourself, it’s recommended to have a professional mechanic address more complicated issues, such as engine problems or worn suspension components.


A car shaking while accelerating can be caused by various factors, such as worn spark plugs, unbalanced tires, suspension issues, or CV joint problems. Identifying and addressing the root cause is essential, not only to prevent further complications but also to ensure a smooth, safe driving experience. By following a step-by-step guide and seeking professional assistance when necessary, you can successfully resolve car shaking and enjoy a comfortable and worry-free ride.

Leave a Comment