Exhaust Noise in Delaware
Delaware 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
Delaware 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. The muffler must meet the manufacturer's specifications, and selling gutted mufflers or straight exhausts is separately banned.
Specific Limits
- Statewide decibel limit
- none
Frequently Asked Questions
Are exhaust noise legal in Delaware?
What are the exact exhaust noise limits in Delaware?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in Delaware.
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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