Is Loud Exhausts Legal in Brazil After the 2026 Law Changes?

No, Brazil prohibits loud exhausts under CONTRAN Resolution 993/2021, which enforces maximum noise limits of 93 dB(A) for motorcycles and 97 dB(A) for cars. Violations trigger fines up to R$ 195.23 and mandatory muffler inspections. Recent 2026 compliance shifts prioritize urban noise reduction, with municipal ordinances (e.g., São Paulo’s Lei 17.134/2020) imposing stricter penalties.

Key Regulations for Loud Exhausts in Brazil

  • CONTRAN Resolution 993/2021: Mandates decibel limits (93 dB for motorcycles, 97 dB for cars) and prohibits modified exhausts exceeding these thresholds.
  • National Traffic Code (CTB) Art. 230: Classifies loud exhausts as a traffic violation, punishable by fines and vehicle seizure if non-compliant.
  • Municipal Ordinances: Cities like São Paulo enforce additional noise pollution laws (e.g., Lei 17.134/2020), requiring periodic inspections and immediate muffler replacements for offenders.

Enforcement relies on traffic police and environmental agencies, with 2026 updates tightening oversight. Non-compliant vehicles face mandatory technical inspections and potential registration suspension.