El Dorado County, CA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Governing section
- Sec. 9.16.030
- Prohibited
- Unmuffled engine, or muffler bypass/cutout device
- Applies to
- Any internal combustion engine, not just highways
- Related noise ban
- Sec. 9.16.050 bars loud, raucous vehicle noise
- Penalty
- Misdemeanor: up to $1,000 fine, 6 months jail
Summary
Operating a vehicle or other internal combustion engine without a proper, functioning muffler is unlawful anywhere in unincorporated El Dorado County under Section 9.16.030. The muffler must be designed for that engine, kept in good operating condition, and free of any cutout, bypass, or similar device that lets exhaust noise escape unchecked.
It is unlawful for any person to operate an internal combustion engine in the unincorporated territory of the County that is not equipped with a muffler designed for use with the engine, which is in good operating condition and is not equipped with a cutout, bypass or similar device. Any person convicted of violation of this section shall be punished according to the general penalties described in Chapter 1.24.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 13 Update 4).
Full Breakdown
16's noise provisions, makes it unlawful to operate an internal combustion engine anywhere in the unincorporated County unless it is equipped with a muffler designed for that specific engine, kept in good operating condition, and free of a cutout, bypass, or similar device that would let exhaust bypass the muffler. 010's general noise ban is. 050 separately bans willfully making loud and raucous noise from a public highway or thoroughfare that unreasonably interferes with another's peace and quiet. 050 for the resulting noise itself. Neither section carves out an exception for modified exhaust systems, straight pipes, or racing mufflers; the requirement is simply that the muffler be the type 'designed for use with the engine' and mechanically sound.
Violations & Fines
A violation of Section 9.16.030 is a misdemeanor under the Chapter 1.24 general penalty: up to a $1,000.00 fine, up to six months in jail, or both, unless the District Attorney reduces the charge to an infraction capped at $500.00. Deputies can cite a vehicle on sight once they identify a missing, defective, or bypassed muffler; a companion citation under Section 9.16.050 can follow if the resulting noise unreasonably interferes with a neighbor's peace and quiet.
Frequently Asked Questions
Are loud aftermarket exhausts illegal in El Dorado County?
Do I need a decibel reading to get cited?
Does this apply to off-road vehicles and ATVs too?
Sources & Official References
Other rules in El Dorado County
California rules heatmap·Compare El Dorado County to another location·View the California noise ordinances overview
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