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New Mexico Exhaust & Muffler Laws (2026)

Info: Your vehicle needs a muffler in good working order.

InfoVerified Jul 30, 2026

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Your vehicle needs a muffler in good working order. A cutout or bypass (which routes exhaust around the muffler) is prohibited, and excessive or unusual noise is barred. New Mexico sets no fixed decibel limit (N.M. Stat. § 66-3-844).

Official source: nmonesource.com →

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