Osceola County, FL Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Muffler mandate
- Manufacturer-approved muffler required, § 9-110(d)
- On-road vehicles
- Governed by F.S. § 316.293/403.415
- Off-road vehicles
- Held to § 9-110 limits, § 9-112(b)
- Vessels
- Separate 90 dBA cap, § 9-116
- Penalty
- $250-$500/day, up to $5,000 irreparable
Summary
Every motor vehicle in unincorporated Osceola County must run through a manufacturer-approved muffler; Sec. 9-110(d) bans unmuffled exhaust outright. On public roads, vehicle sound is policed under state law (F.S. § 316.293), while off-road recreational vehicles, go-carts, dune buggies and racing vehicles are held to the county's own property-line decibel limits under Sec. 9-112(b).
(d) Unmuffled exhaust. No person shall discharge or cause to be discharged the exhaust of any steam engine, stationary internal combustion engine, or motor vehicle, except through a muffler or other device approved by the mechanism's manufacturer, which will effective prevent loud and explosive sound therefrom. ... Sec. 9-112. - Motor vehicle maximum sound levels. (a) Motor vehicles operating on public rights-of-way. Motor vehicles on a public right-of-way are regulated as set forth in F.S. § 316.293 and F.S. § 403.415, the provisions of which are hereby enacted for the purpose of vesting jurisdiction of violations in the county court. (b) Recreational motorized vehicles operating off public rights-of-way. No person shall operate or cause to be operated any recreational motorized vehicle off a public right-of-way in such a manner that the sound levels emitted therefrom violate the provisions of section 9-110.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 71 | Land Development Code: Supplement 10).
Full Breakdown
Sec. 9-110(d) prohibits discharging exhaust from any steam engine, stationary internal combustion engine or motor vehicle except through a muffler or other manufacturer-approved device that effectively prevents loud, explosive exhaust noise. Sec. 9-112 splits enforcement by where the vehicle operates. 415, specifically to give the county court jurisdiction over those violations rather than creating a separate county standard. Off a public right-of-way, subsection (b) applies the county's own noise ordinance: any recreational motorized vehicle, including licensed or unlicensed motorcycles, go-carts, amphibious craft, campers, dune buggies, and commercial or noncommercial racing vehicles, may not exceed the sound levels set in Sec.
9-110, up to 55 dBA by day and 45 dBA at night at the property line. Vessels are carved out of both provisions and instead regulated separately under Sec. 9-116, which caps vessel noise at 90 dBA measured fifty feet away and separately bans exhaust cutouts except during a sanctioned regatta or official race. Measurements for land vehicles follow Sec. 9-113's procedure, using an ANSI-compliant sound level meter and at least a one-minute sample taken at the property line.
Violations & Fines
A refusal to submit to a sound test when a law enforcement officer requests one under the vessel provisions is a second-degree misdemeanor under F.S. § 775.082/.083. For land vehicle and muffler violations, code enforcement officers and any law enforcement officer with jurisdiction in unincorporated Osceola County may cite under Sec. 9-108, with chapter 7's fine schedule applying: up to $250 a day for a first violation, $500 a day for a repeat, and up to $5,000 for an irreparable violation.
Frequently Asked Questions
Is a loud aftermarket exhaust illegal in unincorporated Osceola County?
Do go-karts and dune buggies have to meet the same noise limits as cars?
Who enforces vehicle noise on public roads in Osceola County?
What's the noise limit for boats on county waters?
Sources & Official References
Other rules in Osceola County
Florida rules heatmap·Compare Osceola County to another location·View the Florida noise ordinances overview
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