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South Carolina Exhaust & Muffler Laws (2026)

Info: Your vehicle needs a muffler in good working order so it doesn't make excessive or unusual noise, and muffler cutouts and bypasses (which route exhaust around the muffler) are prohibited.

InfoVerified Jun 19, 2026

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Your vehicle needs a muffler in good working order so it doesn't make excessive or unusual noise, and muffler cutouts and bypasses (which route exhaust around the muffler) are prohibited. South Carolina sets no fixed decibel limit (S.C. Code § 56-5-5020).

Official source: scstatehouse.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Exhaust & Muffler in states bordering South Carolina

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

GeorgiaInfo
Every vehicle needs an exhaust system in good working order and running at all times, and it's a misdemeanor to use, sell or offer for sale a muffler that causes excessive or unusual noise or annoying smoke, or any muffler cutout or bypass (which routes exhaust around the muffler). …
Verified Jul 30, 2026 · Source: legis.ga.gov · Full Georgia rule →
North CarolinaInfo
Your vehicle needs a factory-type (OEM) muffler and exhaust in good working order, and muffler cut-outs (which route exhaust around the muffler) are prohibited. North Carolina sets no fixed decibel limit (N.C. Gen. Stat. § 20-128).
Verified Jun 19, 2026 · Source: ncleg.net · Full North Carolina rule →

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