No, Portugal prohibits exhaust systems emitting excessive noise under Decree-Law 261/2007, enforced by the Autoridade Nacional de Segurança Rodoviária (ANSR) and local Autarquias. Modified exhausts exceeding 93 dB(A) in stationary tests or altering original noise levels face fines up to €1,250. The 2026 EU-wide Euro 7 standards may tighten enforcement, requiring periodic technical inspections.
Key Regulations for Loud Exhausts in Portugal
- Noise Limits: Exhaust noise must not exceed 93 dB(A) during stationary tests (Decree-Law 261/2007, Art. 5). Vehicles exceeding this threshold are deemed non-compliant.
- Original Equipment Mandate: Aftermarket exhausts must replicate the manufacturer’s homologated noise levels; deviations trigger penalties under Regulamento (UE) 2018/858.
- Local Enforcement: Municipalities (Câmaras Municipais) conduct roadside checks, collaborating with ANSR to issue fines or order system replacements.