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Maine Exhaust & Muffler Laws (2026)

Info: Your vehicle needs an adequate muffler. Cutouts and bypasses (which route exhaust around the muffler) are barred, along with changes that increase noise.

InfoVerified Jun 19, 2026

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Your vehicle needs an adequate muffler. Cutouts and bypasses (which route exhaust around the muffler) are barred, along with changes that increase noise. A car over 95 decibels, measured by the SAE J-1169 test, is in violation (Me. Rev. Stat. 29-A § 1912).

Official source: legislature.maine.gov →

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