What Causes a Mercedes-Benz to Shake?
2 Answers
The following are the possible reasons for a Mercedes-Benz shaking: 1. Worn or loose engine mounts: Engine mounts are rubber blocks placed between the engine and the frame. Their purpose is to reduce vibrations and cushion the engine's operation while also securing the engine in place. Once these mounts become worn or loose, the engine's shaking becomes noticeably more pronounced. 2. Engine misfire: An engine misfire mainly refers to one or more cylinders not functioning properly. Common symptoms include intermittent exhaust gas flow, severe shaking of the exhaust pipe, noticeable engine vibration, and sometimes accompanied by a sputtering sound. This is often related to faulty ignition coils. 3. Engine carbon buildup: Carbon deposits can accumulate in various parts such as the cylinders, throttle valve, spark plugs, and intake system—all of which are closely related to the engine's power output. When excessive carbon builds up inside the engine, the car's ignition energy decreases, and intake efficiency drops, ultimately leading to symptoms like engine shaking and poor acceleration.
I found that the shaking in Mercedes-Benz cars is most likely related to engine issues, after all, the engine is the core. When I drove a Mercedes myself, I experienced shaking, and it turned out to be caused by aging spark plugs leading to ignition failure, which makes the engine work unevenly and produces vibrations. The same goes for ignition coil failures—if it's damaged, the unstable current transmission causes severe engine shaking. Clogged fuel injectors are another issue; insufficient fuel supply and incomplete combustion make the shaking more noticeable. I also found that severe carbon buildup is a major culprit, especially in city driving with frequent stops and starts, as excessive carbon can hinder smooth engine operation. Some Mercedes models, like older E-Class versions, are prone to these problems. Regular maintenance is crucial—cleaning the throttle body and replacing spark plugs can prevent issues. If left unrepaired, worsening shaking may damage the engine internals, leading to costly repairs.
