← West Virginia driving laws›Exhaust & Muffler

West Virginia Exhaust & Muffler Laws (2026)

Info: Your vehicle needs a muffler — factory (OEM) or equivalent — in good working order, and a cutout, bypass or similar device (which routes exhaust around the muffler) is prohibited.

InfoVerified Jun 19, 2026

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Your vehicle needs a muffler — factory (OEM) or equivalent — in good working order, and a cutout, bypass or similar device (which routes exhaust around the muffler) is prohibited. West Virginia sets no fixed decibel limit (W. Va. Code § 17C-15-34).

Official source: code.wvlegislature.gov →

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

Exhaust & Muffler in states bordering West Virginia

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

KentuckyInfo
Your vehicle needs a suitable, efficient muffler; running with the cutout removed is prohibited, and so is any change that makes the exhaust louder than the factory setup. Kentucky sets no fixed decibel limit (KRS § 189.140).
Verified Jun 19, 2026 · Source: apps.legislature.ky.gov · Full Kentucky rule →
MarylandInfo
Your vehicle needs a muffler in good working order, and muffler cutouts and bypasses (which route exhaust around the muffler) are prohibited, as are tailpipe extensions that amplify noise. Maryland sets no fixed decibel limit (Md. Transp. § 22-402).
Verified Jun 19, 2026 · Source: mgaleg.maryland.gov · Full Maryland rule →
OhioInfo
Your vehicle needs a muffler in good working order, and a cutout or bypass (which routes exhaust around the muffler) is prohibited, along with devices that produce excessive smoke or gas. Ohio sets no fixed decibel limit (Ohio Rev. Code § 4513.22).
Verified Jun 19, 2026 · Source: codes.ohio.gov · Full Ohio rule →
PennsylvaniaInfo
Your vehicle needs a muffler. Cutouts, bypasses (which route exhaust around the muffler), and noise-amplifying changes are prohibited. Sound limits are set by Department regulation; the statute itself sets no fixed decibel number (75 Pa.C.S. § 4523).
Verified Jun 19, 2026 · Source: legis.state.pa.us · Full Pennsylvania rule →
VirginiaInfo
Your vehicle needs an exhaust system in good working order so it doesn't make excessive or unusual noise, and chambered pipes count as a violation. Virginia sets no fixed decibel limit (Va. Code § 46.2-1049).
Verified Jun 19, 2026 · Source: law.lis.virginia.gov · Full Virginia rule →

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