Toyota Prius engine shaking noise while driving on Toyota Prius

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Toyota Prius owners report experiencing engine shaking noises while driving, which can be attributed to several potential issues. Worn-out engine mounts are often cited as a cause of shaking, particularly when the vehicle is idle. Additionally, misfiring can lead to loud rattling noises and may necessitate spark plug replacement or fuel system cleaning. The intensity of the vibration may vary with vehicle speed, making it crucial for owners to note when the shaking occurs to help identify the underlying problem. Furthermore, if the check engine light flashes during these episodes, it may indicate a more serious issue that requires immediate attention. Common maintenance tasks recommended for alleviating engine shaking include replacing spark plugs, coil packs, and cleaning the throttle body and intake manifold, as well as addressing the PCV valve, EGR valve, and EGR cooler. Prompt diagnosis and resolution of these issues are essential for maintaining the smooth operation of the Toyota Prius.

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