Mercedes C Class Makes Noise When Accelerating

If your Mercedes Benz C-Class is making noise when accelerating, it might be time to have it looked at. This article will discuss the symptoms and possible causes of this issue, and how to fix it. First, check for faulty wheel bearings. If you notice this noise while cornering, it might be a sign of a defective wheel bearing on the right side of your car.

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If you notice that your Mercedes C class makes a loud noise while accelerating, it may be due to a worn out alternator belt. Although this belt is less important than the timing belt, it can still damage the engine if it breaks. Another common cause is a slackened tensioner roller.

The good news is that this problem is quite easy to fix. The first step is to replace a worn-out wheel bearing. The problem can also affect the second wheel bearing in the same axle. It is best to replace both bearings at the same time to save time and money.

The second step is to replace the EGR valve. If it is damaged, the car cannot perform many functions. This can be dangerous and inconvenient. It can affect the ability to brake, activate the HVAC system, and operate the window and door electronically.


If you’ve noticed your Mercedes C-Class making a noise when accelerating, there are a few likely causes. One of them is a problem with the air intake. This usually occurs at the turbocharger. While this part of the engine is designed to accelerate air under pressure, it can become rusted, damaged, or dirty over time. It is best to follow the manufacturer’s recommendations for proper care and maintenance of your turbocharger to prevent the noise.

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A loud noise while accelerating could also be caused by a malfunctioning alternator belt. This belt carries power from the engine’s secondary components, but is less important than the timing belt. If it stops working properly, this problem will cause engine trouble. The belt could be wearing out, or the tensioner roller could be out of alignment, causing the noise.

Another possible cause of Mercedes c class noise when accelerating is a faulty wheel bearing. This problem is most likely to cause a humming noise that increases in volume as you accelerate. You may hear this noise when you’re accelerating and turning the steering wheel, or even while cornering. If the noise persists, however, it may be a sign of a faulty wheel bearing.


If you’ve recently noticed a strange noise when accelerating your Mercedes C class, you may need to have the engine checked out. It’s possible that your car is having issues with its belt tension. If you hear a loud knocking sound when accelerating, the belt tension is likely to be off. To fix this issue, you need to find a mechanic who specializes in Mercedes vehicles.

Another cause of a sluggish Mercedes C class is a problem with the air intake. This is usually located near the turbocharger. This part is responsible for propelling air under pressure, and it can develop leaks if it’s not cleaned properly. Make sure to follow the manufacturer’s recommendations to clean your turbocharger.

A broken catalytic converter is another possible cause of the noise. This part of your Mercedes’s exhaust system controls emissions and can be damaged by the noise you hear. If your catalytic converter is broken, it will not perform as well as it should and will cause your car to fail the emissions test in some states. Another cause of a pinging noise is detonation, which occurs when the fuel ignites prior to firing the spark plug. In addition to making a noise while accelerating, detonation can cause a variety of other problems. Often, this problem is caused by a faulty turbo.

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Check for faulty wheel bearings

If you notice that your Mercedes C class pulls to one side while accelerating, it’s time to check the wheel bearings. A bad wheel bearing could cause additional damage to other components, including the steering gear. The first sign to look for is a humming or grinding noise. These sounds get louder as you drive faster. Early stages of wheel bearing damage are hard to notice, but after a few hundred miles, you’ll start to notice the noises. You may also notice increased vibrations under the seats or the steering wheel.

Another sign of faulty wheel bearings is a loose steering wheel. The steering wheel may feel unresponsive or not as precise as usual. However, this isn’t always a sign of faulty wheel bearings. Sometimes, a wheel bearing problem is the cause of uneven tire wear.

The weight of the car and constant wheel revolutions wear out wheel bearings. Bearings also tend to wear out faster if they contain excessive moisture. This can cause rust to form. Adding additional load will also reduce wheel bearing life. However, you can prolong the life of your wheel bearings by following the recommended load rating.