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  1. Home
  2. /Regulations
  3. /NOM-042-SEMARNAT-2003
EnvironmentSEMARNAT

NOM-042-SEMARNAT-2003

Emission limits for new motor vehicles

Establishes maximum permissible emission limits for exhaust gases from new gasoline-powered motor vehicles.

Last updated: 2024-09-15

Applicable products

New light vehiclesPickup trucksSUVsHybrid vehiclesImported automobiles

Related tariff chapters

Chapter 87

Requirements

  • Manufacturer emissions certificate
  • Compliance with EPA Tier 3 or Euro 6 levels
  • Functional OBD-II system
  • Catalytic converter installed
  • Emission control system technical documentation

Compliance steps

1

Verify emission levels

Confirm the vehicle meets emission limits equivalent to EPA Tier 3 or Euro 6.

2

Obtain certification

Present manufacturer emissions certificate or accredited laboratory test results.

3

Technical documentation

Prepare OBD-II system and vehicle emission controls documentation.

4

SEMARNAT application

Submit import application with environmental compliance documentation.

Penalties for non-compliance

Import ban, fines up to 50,000 UMA, vehicle return to country of origin.

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