The right-side motor mount can wear prematurely and cause excessive engine movement. Symptoms you may experience from a failed motor mount are vibrations at idle, noises while going over a bump and vibrations when the transmission is shifting. Replacement of the motor mount is needed to fix the issue.

Some Nissan Altima owners report experiencing rattles and vibrations in the passenger side dashboard, often attributed to several common causes. These issues may stem from loose components within the dashboard or door area, which can create annoying rattling noises. Additionally, some owners have identified speaker problems, particularly with the Bose speaker in certain models, as a source of these disturbances. Vibrations at specific RPM ranges have also been reported, potentially linked to engine or transmission components. Furthermore, mount failures, such as those involving the A/C hose mount, can contribute to these vibration noises affecting the dashboard and surrounding areas. To address these concerns, owners are advised to check for loose items in the glove compartment, inspect speakers for any issues, and consider having engine and transmission components evaluated if vibrations are RPM-specific. If problems persist, seeking assistance from a professional mechanic or dealership is recommended for a thorough diagnosis and resolution.