Exhaust Noise in Oklahoma
Oklahoma 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
Oklahoma 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. Oklahoma additionally bans any exhaust modification that amplifies noise above the originally installed muffler.
Specific Limits
- Statewide decibel limit
- none
Frequently Asked Questions
Are exhaust noise legal in Oklahoma?
What are the exact exhaust noise limits in Oklahoma?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in Oklahoma.
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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