August Vehicle Emissions Testing Schedule for Mexico City and State of Mexico

Drivers in Mexico City and the State of Mexico must complete mandatory vehicle emissions tests in August to comply with environmental regulations. The schedule is based on vehicle decal color and license plate endings.

In Mexico City, vehicles with yellow decals and plates ending in 5 or 6 must be tested by August 31. Those with pink decals and plates ending in 7 or 8 have until September 30. The cost for "00," "0," "1," "2," rejection, and technical evaluation holograms is $765.48, while voluntary out-of-state checks cost $630. "Exempt" certificates for vehicles registered in Mexico City are free. Failure to comply incurs a fine of $2,346.20.

The State of Mexico follows a similar schedule for the second half of 2026. Vehicles with yellow decals and plates ending in 5 or 6 must be tested by August 31. Those with pink decals and plates ending in 7 or 8 have until September 30. Costs in the State of Mexico vary: Hologram "00" costs $1,197, "0" is $610, and "1" and "2" are $469. Voluntary "Exempt" is $630, and "Exempt" and "D" are free. Late testing in the State of Mexico can result in a fine of approximately $3,519.

Drivers are advised to check the calendar and schedule appointments in advance to avoid complications and ensure their vehicles can circulate without issues. Maintaining up-to-date verification is crucial for compliance.