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Michigan Exhaust & Muffler Laws (2026)

Info: Passenger vehicles can't exceed 82 decibels above 35 mph, or 76 decibels at 35 mph or below, measured at 50 feet.

InfoVerified Jun 19, 2026

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Passenger vehicles can't exceed 82 decibels above 35 mph, or 76 decibels at 35 mph or below, measured at 50 feet. Cutouts, bypasses (which route exhaust around the muffler), and amplifiers are banned (MCL § 257.707c).

Official source: legislature.mi.gov →

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