Exhaust Noise in Massachusetts
Vehicle type: Van
Massachusetts sets no statewide decibel limit for passenger cars, but bans any exhaust modified in a way that amplifies or increases noise — the practical test is whether it is louder than stock.
Verified against primary sources · August 2026
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Frequently Asked Questions
Are exhaust noise legal in Massachusetts?
What are the exhaust noise limits in Massachusetts?
Are there exceptions for exhaust noise in Massachusetts?
Street-legal exhaust noise picks
Gear that helps you mod without a ticket in Massachusetts.
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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