Exhaust Noise in New Jersey
New Jersey sets no statewide decibel limit for passenger cars. A muffler in good working order is required, exhaust may not produce excessive or unusual noise, and cutouts or bypasses are prohibited.
Verified against primary sources · August 2026
What the law says
New Jersey law is qualitative rather than numeric: A muffler in good working order is required, exhaust may not produce excessive or unusual noise, and cutouts or bypasses are prohibited. New Jersey's general noise regulations expressly exempt public roadways, so this section is the only enforcement hook.
Specific Limits
- Statewide decibel limit
- none
Frequently Asked Questions
Are exhaust noise legal in New Jersey?
What are the exact exhaust noise limits in New Jersey?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in New Jersey.
Measure your exhaust at the test RPM before a fix-it ticket does.
Shop on AmazonA removable insert that brings a loud exhaust back under your state's limit.
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