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Connecticut Exhaust & Muffler Laws (2026)
Info: Every vehicle has to be operated, equipped and adjusted so it doesn't make unnecessary or unusual noise, and any vehicle with an internal-combustion engine needs a muffler in good working order that's in use whenever the vehicle is running.
Every vehicle has to be operated, equipped and adjusted so it doesn't make unnecessary or unusual noise, and any vehicle with an internal-combustion engine needs a muffler in good working order that's in use whenever the vehicle is running. You can't install or use a gutted muffler, a muffler cutout, a straight exhaust, or a muffler missing its interior baffle plates — the only exception is a sanctioned race or public exhibition. Maximum noise levels are set by DMV regulation under C.G.S. Sec. 14-80a (C.G.S. Sec. 14-80).
General legal information, not legal advice — verify important decisions with a licensed attorney.
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