G/TBT/N/MEX/279
22 January 2015
(15-0462)  Page: 1/2
Committee on Technical Barriers to Trade  Original: Spanish
 
  NOTIFICATION 
The following notification is being circulated in accordance with Article 10.6. 
 
1. Notifying Member: MEXICO 
If applicable, name of local governme nt involved (Articles 3.2 and 7.2):   
2. Agency responsible: Secretaría de Medio Ambiente y Recursos Naturales  (Ministry of the 
Environment and Natural Resources) 
Name and address (including telephon e and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:  
Comité Consultivo Nacional de Normalización de Medio Ambiente y Recursos Naturales  
(National Advisory Committee on Standardization for the Environment and Natural Resources)  
Dirección General de Industria  (Directorate-General of Industry) 
Boulevard Adolfo Ruiz Cortines número 4209, 4o. piso Ala "B" Fraccionamiento Jardines en la Montaña 
Delegación Tlalpan 
14210, México, D.F. Email: dgi@semarnat.gob.mx   
3. Notified under Article 2.9.2 [X], 2. 10.1 [ ], 5.6.2 [ ],  5.7.1 [ ], other:   
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided  in addition, where applicable): Vehicles 
other than railway or tramway rolling-stock, and parts and accessories thereof (HS 87) 
5. Title, number of pages and lang uage(s) of the notified document: Proyecto de 
modificación a la Norma Oficial Mexicana NOM-044-SEMARNAT-2006, Que establece los 
límites máximos permisibles de emisión de hidrocarburos totales, hidrocarburos no 
metano, monóxido de carbono, óxidos de nitr ógeno y partículas provenientes del escape 
de motores nuevos que usan diesel como combustible y que se utilizarán para la 
propulsión de vehículos automotores nuevos con peso bruto vehicular mayor de 3,857 
kilogramos  (Draft Amendment to Mexican Official Standard NOM-044-SEMARNAT-2006 
establishing the maximum permissible limits for emissions of total hydrocarbons, non-
methane hydrocarbons, carbon monoxide, nitrogen oxides and particles from the exhaust 
pipes of new diesel engines to be used for the propulsion of new motor vehicles of a gross vehicle weight exceeding 3,857 kg) (27 pages, in Spanish) 
6. Description of content: This Mexican Official Standard is binding upon the manufacturers 
and importers of new diesel engines to be used for the propulsion of motor vehicles of a 
gross vehicle weight exceeding 3,857 kg and for motor vehicles of a gross vehicle weight 
exceeding 3,857 kg equipped with this type of engine. This Mexican Official Standard does not cover remanufactured engines. G/TBT/N/MEX/279 
- 2 - 
  7. Objective and rationale, including the nature of urgent problems where 
applicable: The notified text establishes the maximum permissible limits for emissions of 
ammonia (NH3), hydrocarbons (HC), non-me thane hydrocarbons (NMHC), non-methane 
hydrocarbons plus nitrogen oxides (NMHC+NOx), carbon monoxide (CO), nitrogen oxides (NOx) and particles (Part) from the exhaust pipes of new diesel engines to be used for the propulsion of motor vehicles of a gross vehicle weight exceeding 3,857 kg and from the 
exhaust pipes of new motor vehicles of a gross vehicle weight exceeding 3,857 kg 
equipped with this type of engine.  
8. Relevant documents:  
• Norma Mexicana NMX-AA-23-1986, Protección al Ambiente - Contaminación 
Atmosférica.  Terminología  (Mexican Standard NMX-AA-23-1986, Environmental 
protection - Atmospherical pollution. Terminology). Notice of entry into force 
published in the Official Journal on 15 July 1986. 
• NOM-086-SEMARNAT-SENER-SCFI-2005, Especificaciones de los combustibles fósiles 
para la protección ambiental  (Mexican Official Standard NOM-086-SEMARNAT-
SENER-SCFI-2005, Fossil fuel specifications for environmental protection). 
9. Proposed date of adoption: - 
Proposed date of entry into force: The notified Mexican Official Standard will enter into 
force after being published as a final standard in the Official Journal ( Diario Oficial de la 
Federación ). More specifically, it will enter into force on the day following that on which the 
General Directorate of Standards of the Ministry of the Economy issues a notice confirming the existence of the infrastructure required for its implementation.  
10. Final date for comments: 17 February 2015 
11. Texts available from: National enquiry point [X] or address, telephone and fax 
numbers and email and website addresse s, if available, of other body:  
Secretaría de Economía 
Subsecretaría de Competitividad y Normatividad 
Dirección General de Normas Tel.: (+52) 55 5729 9100, Ext. 43217 
Fax: (+52) 55 5520 9715 
Website: http://www.economia-noms.gob.mx/?P=144  
Email: normasomc@economia.gob.mx  and/or sofia.pacheco@economia.gob.mx  
Diario Oficial de la Federación  (Official Journal) of 17 December 2014: 
http://www.dof.gob.mx/nota_detalle.p hp?codigo=5376263&fecha=17/12/2014  
https://members.wto.org/crnattachments/2015/TBT/MEX/15_0393_00_s.pdf