What Decibel Level Indicates Good Sound Insulation in Cars?

1 Answers
DelBenjamin
07/30/25 1:40am
Vehicle noise standards are below 60 decibels. Noise refers to the sound emitted by road and rail vehicles during operation. Additional information is as follows: 1. Causes of excessive car noise: carbon buildup in the engine; shock absorber malfunction; large gaps in the cabin or vehicle body; aging tires; internal damage to valve guides; cooling system failure; poor-quality engine oil; engine misfire; spark plug carbon buildup. 2. Solutions for excessive car noise: install sound-absorbing foam material under the hood to suppress vibrations caused by the hood and absorb a significant amount of noise; use damping plates combined with sound-absorbing pads to address road and tire noise; install or replace door seals; tighten screws or replace faulty components.
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