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Alabama Exhaust & Muffler Laws (2026)

Info: Your vehicle needs a muffler in good working order, operating at all times, and muffler cutouts, bypasses (which route exhaust around the muffler), and devices with no baffles are prohibited, while excessive noise or annoying smoke and fumes are barred.

InfoVerified Jul 26, 2026

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Your vehicle needs a muffler in good working order, operating at all times, and muffler cutouts, bypasses (which route exhaust around the muffler), and devices with no baffles are prohibited, while excessive noise or annoying smoke and fumes are barred. Alabama sets no fixed decibel limit (Ala. Code § 32-5-216).

Official source: alison.legislature.state.al.us →

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

Exhaust & Muffler in states bordering Alabama

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

FloridaInfo
Your vehicle needs a working exhaust and muffler, you can't run a cutout or bypass (which routes exhaust around the muffler), and exhaust changes that make the vehicle louder than stock are barred. The Department of Environmental Protection can set a decibel limit, but none is currently in force (Fla. Stat. §§ 316.272, 316.293).
Verified Jun 19, 2026 · Source: leg.state.fl.us · Full Florida rule →
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 →
MississippiInfo
Every vehicle needs a muffler in good working order, running at all times, so it doesn't make excessive or unusual noise or annoying smoke, and no one may use a muffler cutout, bypass or similar device (which routes exhaust around the muffler) on a highway. See Miss. Code § 63-7-55. Mississippi sets no decibel number. Violations of Title 63, Chapter 7 are misdemeanors (§ 63-9-11).
Verified Jul 30, 2026 · Source: driverservicebureau.dps.ms.gov · Full Mississippi rule →
TennesseeInfo
Your vehicle needs a muffler in good working order, running at all times, cutouts (which route exhaust around the muffler) are prohibited, and the excessive or unusual noise the law bars includes engine noise from a non-motorcycle that's noticeably louder than similar vehicles and over 95 decibels. …
Verified Jul 26, 2026 · Source: publications.tnsosfiles.com · Full Tennessee rule →

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