2020 Subaru WRX Has A Rattling Noise

Diagnosing Common Causes of Rattling Noises in Your 2020 Subaru WRX and How to Resolve Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
28% chance it's the
Ball Joints
0%
16% chance it's the
Struts or Strut Mount
0%
12% chance it's the
Sway Bar Links
0%
44% chance it's
Something else
The most common reasons a 2020 Subaru WRX has a rattling noise are the ball joints, struts or strut mount, or a problem with the sway bar links.
  • Ball Joints: A worn or damaged ball joint can result in poor steering response and uneven tire wear due to compromised suspension geometry.
  • Struts or Strut Mount: A worn or damaged strut or strut mount can result in poor ride quality, excessive noise, and uneven tire wear.
  • Sway Bar Links: A worn or damaged sway bar link can result in excessive body roll and clunking noises during turns.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What steps should I take to diagnose the rattling noise in my 2020 Subaru WRX?

To effectively diagnose the rattling noise in your 2020 Subaru WRX, begin by methodically locating the source of the sound. Start your investigation in the engine bay, undercarriage, and exhaust system, as these areas are common culprits for rattling noises. Look for any loose or damaged parts that may be contributing to the issue. Pay particular attention to the exhaust system, checking for loose heat shields or brackets that could be vibrating. Next, examine the suspension components, such as sway bar links and bushings, to identify any wear or looseness that might be causing the noise. Additionally, inspect the engine's belts, pulleys, and mounts to ensure they are secure and functioning properly. After conducting these checks, take your WRX for a test drive to listen for the rattling noise under various driving conditions. If you are unable to pinpoint the source of the noise or feel uncertain about your findings, it is advisable to consult a qualified mechanic for a comprehensive inspection. By following this diagnostic approach, you can systematically address the rattling noise and ensure your vehicle operates smoothly.

What could be causing the rattling noise in my 2020 Subaru WRX?

When addressing the rattling noise in your 2020 Subaru WRX, it's crucial to understand the common problems that may be causing this issue. One of the primary suspects is loose heat shields, which can vibrate against the exhaust system, resulting in a persistent rattle while driving. Additionally, the exhaust system itself may have loose components, such as a muffler or exhaust pipe, that contribute to the noise. It's also important to examine the suspension system; worn or damaged parts like sway bar links or bushings can create rattling sounds, especially when driving over bumps or rough terrain. Engine mounts are another area to consider; if they are faulty or worn, they can lead to vibrations that manifest as rattling during acceleration or deceleration. Lastly, be sure to check for loose brackets or fasteners throughout the vehicle, as these can also produce unwanted noise. If you're unable to identify the source of the rattling, seeking the expertise of a professional mechanic is recommended to ensure a comprehensive inspection and effective resolution. Regular maintenance is key to preventing these issues and ensuring your WRX remains in optimal condition.

How urgent is it to address the rattling noise in my 2020 Subaru WRX?

Addressing the rattling noise in your 2020 Subaru WRX is not just a matter of comfort; it is a critical safety and maintenance issue that requires immediate attention. Ignoring this noise can lead to more severe mechanical problems, which may escalate into costly repairs that could have been avoided with timely intervention. Additionally, unusual sounds often signal underlying issues that could compromise the safety of your vehicle, putting you and your passengers at risk. By taking action now, you not only safeguard your vehicle's performance but also help maintain its resale value, ensuring that it remains in optimal condition for future buyers. Therefore, if you notice a rattling noise, it is essential to investigate the source and address it as soon as possible to prevent further complications.

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2020 Subaru WRX Rattling Noise: Causes & Repairs | RepairPal