Exhaust Noise in Washington
Vehicle type: Sedan
Washington requires an adequate muffler and sets in-use 50-foot limits of 72–90 dBA; the oft-cited 95 dBA test applies only to pre-1986 vehicles.
Verified against primary sources · August 2026
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Frequently Asked Questions
Are exhaust noise legal in Washington?
What are the exhaust noise limits in Washington?
Are there exceptions for exhaust noise in Washington?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in Washington.
Measure your exhaust at the test RPM before a fix-it ticket does.
Exhaust silencer insert →A removable insert that brings a loud exhaust back under your state's limit.
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