Ventura, CA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Muffler required
- Cal. Veh. Code §27150
- Modified exhaust ceiling
- 95 dBA SAE. Cal. Veh. Code §27151
- Passing-noise limits
- Cal. Veh. Code §23130
- Sound system >50 ft
- Cal. Veh. Code §27007
- Stationary noise
- SBMC Ch. 10.650 applies
Summary
Vehicle and motorcycle noise on Ventura streets is primarily a state-law matter: California Vehicle Code §27150 requires every motor vehicle to have an adequate muffler in constant operation, §27151 prohibits modified exhaust systems that amplify noise (95 dBA SAE test ceiling for vehicles under 6,000 lbs), and CVC §23130 sets passing-vehicle dBA standards. Local enforcement is by Ventura PD and CHP on adjoining state routes (US-101, SR-126, SR-33, SR-1). SBMC Ch. 10.650 applies to stationary vehicle noise (idling, sound systems, repair work) on private property.
(a) Every motor vehicle equipped with an internal combustion engine and subject to registration shall at all times be equipped with an adequate muffler in constant operation and properly maintained to prevent any excessive or unusual noise, and no muffler or exhaust system shall be equipped with a cutout, bypass, or similar device. (b) Except as provided in Division 16.5 (commencing with Section 38000) with respect to off-highway motor vehicles subject to identification, every passenger vehicle operated off the highways shall at all times be equipped with an adequate muffler in constant operation and properly maintained so as to meet the requirements of Article 2.5 (commencing with Section 27200), and no muffler or exhaust system shall be equipped with a cutout, bypass, or similar device. (c) The provisions of subdivision (b) shall not be applicable to passenger vehicles being operated off the highways in an organized racing or competitive event conducted under the auspices of a recognized sanctioning body or by permit issued by the local governmental authority having jurisdiction, or to vehicles not equipped with an internal combustion engine.
Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Two regimes overlap. (1) Moving vehicles, California Vehicle Code: §27150 (a) requires every motor vehicle subject to registration to have an adequate muffler in constant operation and prohibits cutouts/bypasses; §27151 (a) prohibits exhaust modifications that amplify or increase noise above limits, and codifies a 95 dBA SAE test ceiling for vehicles under 6,000 lbs (excluding motorcycles); §23130 sets passing-noise dBA limits by vehicle class and speed; §27001 prohibits unnecessary horn use; §22651.5 authorizes towing for excessive audible-device noise. These rules are enforced statewide by any peace officer, including Ventura PD officers and CHP on US-101 and SR-126 through the city. (2) Stationary/private-property vehicle noise, SBMC Ch. 10.650 applies to vehicle audio systems, idling diesel trucks at loading docks, mobile generators on construction sites, and engine repair on residential parcels, treated like any other stationary noise source and judged at the receiving property line.
Violations & Fines
CVC §27150/§27151 violations are correctable infractions (fix-it tickets): a single dismissable on certification of repair, but repeat offenses move to non-correctable. Aftermarket exhaust shops may be cited for installing illegal systems. SBMC Ch. 10.650 stationary vehicle violations follow the standard infraction/misdemeanor path under Title 1. Boombox cars near the Promenade are commonly cited under §27007 (sound emanating more than 50 feet from a vehicle on a highway).
Frequently Asked Questions
Are loud motorcycles legal in Ventura?
What's the limit on car stereo volume?
Can I rev my engine in my driveway at night?
Sources & Official References
Other rules in Ventura
California rules heatmap·Compare Ventura to another location·View the California noise ordinances overview
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Vehicle Noise in Nearby Cities
How other cities in Ventura County handle vehicle noise.