Rancho Cucamonga, CA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Curfew
- 10 p.m. to 8 a.m. near homes
- Covered vehicles
- Cars, motorcycles, and motorboats
- Covered activity
- Repairing, rebuilding, modifying, or testing
- Governing section
- Development Code § 17.66.050(G)(3)
- Companion limit
- 65-70 dBA commercial exterior standard, § 17.66.050(G)(1)
Summary
Rancho Cucamonga bars anyone from repairing, rebuilding, modifying, or testing a motor vehicle, motorcycle, or motorboat in a way that creates a noise disturbance next to homes between 10 p.m. and 8 a.m. under Development Code Section 17.66.050(G)(3). The rule targets late-night engine revving, exhaust testing, and repair work near residential property.
Vehicle repairs and testing. No person shall cause or permit the repairing, rebuilding, modifying, or testing of any motor vehicle, motorcycle, or motorboat in such a manner as to increase a noise disturbance between the hours of 10:00 p.m. and 8:00 a.m. adjacent to a residential area.
Full Breakdown
66, Performance Standards. when the activity is adjacent to a residential area. near homes. window, an hour later than the general commercial curfew because vehicle work tends to be noisier. 030: from a nonresidential parcel adjacent to a residential zone, the city measures at the residential property line. The rule applies citywide regardless of zoning, covering licensed repair shops in Industrial and General Commercial zones as well as a resident revving an engine or testing a modified exhaust in a driveway beside a neighbor's home. Code enforcement responds to noise complaints from adjacent residents and can inspect the site and cite the responsible business or property owner.
Violations & Fines
Violating Section 17.66.050(G)(3) is enforceable under the citywide penalty scheme in Section 1.12.010: an infraction carrying up to $100 for a first offense, $200 for a second, and $500 for a third within a year, or a misdemeanor up to $1,000 and six months in jail if the city attorney elects to prosecute it that way. Each night of noise is a separate violation.
Frequently Asked Questions
Can a mechanic test a car's exhaust at midnight next to my house in Rancho Cucamonga?
Does this rule apply to home garages, or only licensed repair shops?
What time can vehicle repair noise resume in the morning?
Sources & Official References
Other rules in Rancho Cucamonga
California rules heatmap·Compare Rancho Cucamonga to another location·View the California noise ordinances overview
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