G/TBT/N/MEX/270  
3 March 2014  
(14-1293)  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 , SEMARNAT 
(Ministry of the Environment and Natural Resources) 
Name and address (including telephone and fax numbers and 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), Jardines en la Montaña, Código Postal 14210, Delegación Tlalpan, México Distrito Federal; 
Email: jose.wilson@semarnat.gob.mx ; Website: http://www.semarnat.gob.mx/noms  
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): Petrol-
fuelled motor vehicles (ICS 43.060.01) 
5. Title, number of pages and lang uage(s) of the notified document: Proyecto de 
Modificación a la Norma Oficial Mexicana NOM-041-SEMARNAT-2006, Que establece los límites máximos permisibles de emisión de gases contaminantes provenientes del escape 
de los vehículos automotores en circulación que usan gasolina como combustible  (Draft 
Amendment to Mexican Official Standard NOM-041-SEMARNAT-2006 establishing the maximum permissible limits for emissions of gaseous pollutants from the exhausts of gasoline-powered motor vehicles) (9 pages, in Spanish)  
6. Description of content: The notified text establishes the maximum permissible limits 
for emissions of hydrocarbons, carbon monoxide, oxygen and nitrogen oxide; the 
minimum and maximum level of carbon mono xide and carbon bioxide taken together; 
and the lambda factor as an assessment criterion. It is binding on the owners and lawful possessors of gasoline-powered motor vehicles used in or definitively imported into 
Mexico, but does not apply to vehicles with a gross vehicle weight of less than 400 kg, 
motorcycles, agricultural tractors, or machinery used in the construction and mining industries.  
7. Objective and rationale, including the nature of urgent problems where 
applicable: To protect human beings and the environment and its ecosystems. G/TBT/N/MEX/270 
- 2 - 
  8. Relevant documents:  
- Mexican Official Standard NOM-042-SEMARNAT-2003 establishing the maximum 
permissible limits for emissions of total or non-methane hydrocarbons, carbon 
monoxide, nitrogen oxide and particles from the exhaust pipes of new motor vehicles of a gross vehicle weight not exceeding 3,857 kg and using gasoline, liquefied petroleum gas, natural gas or di esel fuel, as well as for emissions of 
evaporative hydrocarbons from the fuel systems of such vehicles. 
- Mexican Official Standard NOM-047-SEMARNAT-1999 establishing the characteristics of 
the equipment and the measuring procedure used to verify levels of pollutant 
emissions from motor vehicles using gasoline, liquefied petroleum gas, natural gas 
or other alternative fuels.  
9. Proposed date of adoption: 
Proposed date of entry into force:   Not applicable. 
90 calendar days after the publication of the final Mexican Official Standard in the 
Official Journal. 
10. Final date for comments: 7 April 2014 
11. Texts available from: National enquiry po int [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 5229 6100, Ext. 43217 
Fax: (+52) 55 5520 9715 Website: 
http://www.economia.gob.mx/comuni dad-negocios/c ompetitividad-
normatividad/normalizacion/catalogo-mexicano-de-normas 
Email: normasomc@economia.gob.mx  and/or jesus.figueroa@economia.gob.mx  
Text available online at: 
http://www.dof.gob.mx/index.p hp?year=2014&month=02&day=06 
http://members.wto.org/crnattachments/2014/tbt/MEX/14_1020_00_s.pdf