Wheat Ridge adopts ordinance targeting non‑compliant vehicle mufflers to curb excessive noise

Wheat Ridge City Council voted unanimously Feb. 9 to adopt Council Bill 022026, an ordinance amending Chapter 13 of the Wheat Ridge Code of Laws to address excessive vehicle exhaust noise. The ordinance defines a "compliant muffler" as an original factory unit or a replacement that matches the original specifications and makes operating a motor vehicle without a compliant muffler a municipal court violation.

City Attorney Dahl, who presented the ordinance at second reading, said the measure gives police "a reasonable basis" to stop vehicles producing noise that is greater than normal traffic and then examine the muffler for compliance. The municipal court penalty schedule in the ordinance sets a $200 fine for a first violation, $300 for a second, and $600 for a third or subsequent violation within six months, and requires at least one initial court appearance that may be attended by video.

Council discussion focused on enforcement discretion and technical definitions. Councilor Patrick Quinn asked how the rule would apply to classic cars or aftermarket replacement mufflers; Dahl said compliance is based on whether the replacement "conforms in all respects to the specifications of the original factory installed muffler," and defendants could present receipts and specifications in court as a defense. Councilor Kathleen Martel raised concerns about unintended consequences for motorists who lose parts in a crash or cannot immediately afford repairs; Dahl and Mayor Pro Tem Hultin noted officer discretion at the initial stop and the municipal court's ability to grant continuances or allow repairs in lieu of fines.

Several council members noted the city’s classic‑car culture and the need to avoid unduly penalizing hobbyists while targeting intentional, obnoxious noise. Councilor Dan Larson, who led the effort, said the ordinance is about protecting public health and quality of life: "Excessive noise is an affront to the peace and quiet we expect to enjoy in our homes and in our public spaces." He moved adoption; the motion passed 8‑0 and the ordinance will take effect upon adoption and signature by the mayor.

The ordinance also includes a provision that makes modifying or selling a noncompliant muffler an offense, and authorizes police to rely on their training and experience in determining whether a vehicle is operating at a volume greater than similar traffic. Staff and several councilors said they expect to monitor implementation and return for adjustments if necessary.