Cheyenne, WY Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Governing section
- City Code 10.24.200
- Muffler required
- At all times, in working order
- Stereo/audio noise
- Named enforcement factor
- First-offense fine
- $100-$200
- 3rd offense penalty
- Up to $500 or 6 months jail
Summary
Cheyenne requires a working muffler on every vehicle and bans unreasonable noise, including loud stereos, revving, and tire squealing, under City Code 10.24.200.
Every motor vehicle shall at all times be equipped with a muffler or other effective noise suppressing system in good working order and in constant operation. No person shall use a muffler cut-out, bypass or similar device. ... No person shall make, continue to make, or cause any unreasonable noise originating in or from any vehicle. ... 6. The presence or use of noise amplification equipment, including stereo or audio systems, operated at unreasonably high-volume levels;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 73).
Full Breakdown
Every motor vehicle in Cheyenne must run a muffler or equivalent noise-suppressing system at all times, and muffler cut-outs or bypasses are illegal. Section 10.24.200 separately bans causing "unreasonable noise" from a vehicle, and lets a peace officer base that call on factors like time of day, rapid acceleration, revving, tire squealing, altered exhaust systems, or a stereo/audio system played at unreasonably high volume. Loudspeakers, sound cars, and sound trucks are exempt only with written police-chief permission and a Chapter 8.56 permit.
Violations & Fines
Misdemeanor: $100-$200 fine (1st offense); $250-$300 (2nd within 12 months); $400-$500 or up to 6 months jail, or both, for a 3rd+ offense within 12 months, with mandatory municipal court appearance.
Frequently Asked Questions
Can Cheyenne police cite me for a loud car stereo?
Is a muffler delete legal in Cheyenne?
Sources & Official References
Other rules in Cheyenne
Compare Cheyenne to another location·View the Wyoming noise ordinances overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.