Exhaust Laws by State 2025

State
Status
Alabama Flag
AlabamaProhibits mufflers that create excessive or unusual noise
Alaska Flag
AlaskaNot regulated at state level
Arizona Flag
ArizonaProhibits mufflers that create excessive or unusual noise
Arkansas Flag
ArkansasProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
California Flag
CaliforniaState has objective method for measuring exhaust noise
Colorado Flag
ColoradoProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Connecticut Flag
ConnecticutProhibits mufflers that create excessive or unusual noise
Delaware Flag
DelawareProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Florida Flag
FloridaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Georgia Flag
GeorgiaProhibits mufflers that create excessive or unusual noise
Hawaii Flag
HawaiiProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Idaho Flag
IdahoProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Illinois Flag
IllinoisProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Indiana Flag
IndianaProhibits mufflers that create excessive or unusual noise
Iowa Flag
IowaProhibits mufflers that create excessive or unusual noise
Kansas Flag
KansasProhibits mufflers that create excessive or unusual noise
Kentucky Flag
KentuckyProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Louisiana Flag
LouisianaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Maine Flag
MaineState has objective method for measuring exhaust noise
Maryland Flag
MarylandProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Massachusetts Flag
MassachusettsProhibits mufflers that create excessive or unusual noise
Michigan Flag
MichiganState has objective method for measuring exhaust noise
Minnesota Flag
MinnesotaProhibits mufflers that create excessive or unusual noise
Mississippi Flag
MississippiProhibits mufflers that create excessive or unusual noise
Missouri Flag
MissouriProhibits mufflers that create excessive or unusual noise
Montana Flag
MontanaState has objective method for measuring exhaust noise
Nebraska Flag
NebraskaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Nevada Flag
NevadaState has objective method for measuring exhaust noise
New Hampshire Flag
New HampshireProhibits mufflers that create excessive or unusual noise
New Jersey Flag
New JerseyProhibits mufflers that create excessive or unusual noise
New Mexico Flag
New MexicoProhibits mufflers that create excessive or unusual noise
New York Flag
New YorkProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
North Carolina Flag
North CarolinaProhibits mufflers that create excessive or unusual noise
North Dakota Flag
North DakotaProhibits mufflers that create excessive or unusual noise
Ohio Flag
OhioProhibits mufflers that create excessive or unusual noise
Oklahoma Flag
OklahomaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Oregon Flag
OregonState has objective method for measuring exhaust noise
Pennsylvania Flag
PennsylvaniaState has objective method for measuring exhaust noise
Rhode Island Flag
Rhode IslandProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
South Carolina Flag
South CarolinaProhibits mufflers that create excessive or unusual noise
South Dakota Flag
South DakotaProhibits mufflers that create excessive or unusual noise
Tennessee Flag
TennesseeProhibits mufflers that create excessive or unusual noise
Texas Flag
TexasProhibits mufflers that create excessive or unusual noise
Utah Flag
UtahProhibits mufflers that create excessive or unusual noise
Vermont Flag
VermontProhibits mufflers that create excessive or unusual noise
Virginia Flag
VirginiaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Washington Flag
WashingtonProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
West Virginia Flag
West VirginiaProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Wisconsin Flag
WisconsinProhibits mufflers that create excessive or unusual noise. Also prohibits modifying mufflers to make more noise
Wyoming Flag
WyomingProhibits mufflers that create excessive or unusual noise

Sources

  1. Semasan