La Mesa, CA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Vehicle repair
- Banned 10 p.m. to 7 a.m. in residential areas
- Definition
- 'Motor vehicles' includes mini-bikes and go-carts
- Stereo/muffler
- No dedicated section; covered by general catch-all
- Catch-all
- 10.80.180 bans loud, unusual, disturbing noise
- Enforcement
- La Mesa Police Department
- Remedy
- Injunction or restraining order for repeat noise
Summary
La Mesa's noise code has no stereo- or muffler-specific section, but La Mesa Municipal Code Section 10.80.110 bars repairing, rebuilding, or testing any motor vehicle in a residential area between 10 p.m. and 7 a.m. The chapter's catch-all Section 10.80.180 also bans any loud or unusual noise, including from vehicles, that disturbs a neighborhood or annoys a reasonable resident.
(l)Motor Vehicles. ... "Motor vehicles" shall include, but not be limited to, mini-bikes and go-carts. ... It shall be unlawful for any person within any residential ... area of the city to repair, rebuild, or test any motor vehicle between the hours of 10:00 p.m. of one day and 7:00 a.m. of the next day. ... Notwithstanding any other provision of this chapter, and in addition thereto, it shall be unlawful for any person to wilfully make or continue, or cause to be made or continued, any loud, unnecessary, or unusual noise which disturbs the peace or quiet of any neighborhood or which causes discomfort or annoyance to any reasonable person of normal sensitiveness residing in the area.
Full Breakdown
Anyone hoping to find a dedicated car-stereo or exhaust-muffler ordinance in La Mesa will not find one in Chapter 10.80. What the chapter does regulate directly is vehicle repair noise: Section 10.80.110 makes it unlawful within any residential area of the city to repair, rebuild, or test a motor vehicle between 10:00 p.m. of one day and 7:00 a.m. of the next. The chapter's definitions section, 10.80.020(l), broadly defines 'motor vehicles' to include, but not be limited to, mini-bikes and go-carts, so backyard minibike testing at night falls under the same hours restriction.
For everything else vehicle-related, including stereo volume, revving engines, or aftermarket exhaust, residents rely on the chapter's general catch-all at Section 10.80.180, which makes it unlawful to wilfully make or continue any loud, unnecessary, or unusual noise that disturbs the peace or quiet of a neighborhood or causes discomfort to a reasonable person of normal sensitiveness. That section lists eleven factors an officer or court weighs, including the noise's level and intensity, whether it is usual or unusual, its proximity to residential sleeping areas, the time of day, its duration, and whether it recurs.
The La Mesa Police Department enforces both provisions, and Section 10.80.060 lets the city pursue an injunction or restraining order against a repeat offender as an additional remedy beyond citation.
Violations & Fines
Violating the vehicle repair hours limit or the general noise catch-all is an infraction under the general penalty clause at La Mesa Municipal Code Section 1.01.080. A vehicle noise source that keeps disturbing a neighborhood can also be pursued as a public nuisance, with the city seeking a restraining order or injunction under Section 10.80.060.
Frequently Asked Questions
Is there a specific law against loud car stereos in La Mesa?
Can I work on my car engine outside at night in La Mesa?
What can I do about a neighbor revving a loud vehicle at night?
Sources & Official References
Other rules in La Mesa
California rules heatmap·Compare La Mesa to another location·View the California noise ordinances overview
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