What are the reasons for severe engine shaking in a Mercedes-Benz C-Class?

[MacJaxon]

Mercedes-Benz C-Class engine shaking can be caused by aging or loose engine mounts, engine misfire, or carbon buildup issues. Aging or loose engine mounts: Engine mounts are rubber blocks placed between the engine and the vehicle frame. Their purpose is to reduce vibration and absorb shocks during engine operation while securing the engine in place. When these mounts age or become loose, engine shaking becomes noticeably severe. Engine misfire: Engine misfire refers to when one or more cylinders in the engine fail to function properly. Common symptoms include intermittent exhaust flow, severe shaking of the exhaust pipe, noticeable engine vibration, and sometimes accompanied by sputtering sounds. This is often related to ignition coil failure. Carbon buildup issues: Carbon deposits can accumulate in various parts such as the cylinders, throttle body, spark plugs, and intake system—all critical areas affecting engine power output. Excessive carbon buildup reduces ignition efficiency and decreases air intake performance, ultimately leading to engine shaking and sluggish acceleration.