2026 Emissions Testing in Oaxaca: Which cars undergo testing during the September–October two-month period?

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Vehicle Verification Calendar in Oaxaca for September–December 2026

In Oaxaca, during the September–October 2026 two-month period, which corresponds to the second vehicle verification period of the year, vehicles with odd-numbered license plates must undergo verification, according to the schedule established by the Oaxaca Secretariat of Mobility.

This period is part of the second semester of the year. Vehicles with even-numbered license plates — 0, 2, 4, 6, or 8 — must undergo verification from November through December.

Vehicle Verification Is Mandatory in Oaxaca

The process is mandatory for most private and intensive-use vehicles registered in the state and must be completed at authorized Verification Centers.

Drivers are advised to pay the corresponding fee in advance. Discounts may apply if the vehicle was verified during the first semester. They should also bring a valid vehicle registration card.

Vehicle Verification Calendar for the Second Semester of 2026 in Oaxaca

  • Odd-numbered plates (1, 3, 5, 7, or 9): September and October.
  • Even-numbered plates (0, 2, 4, 6, or 8): November and December.

The complete second verification period runs until December 31, 2026.

This odd/even license-plate system is used in Oaxaca, unlike states such as Mexico City and the State of Mexico, which use more detailed schedules based on windshield sticker colors and specific plate digits.

If the vehicle was verified during the first semester, a 30% discount is available for the second verification period. If the corresponding fee was paid but the vehicle was not verified, a 10% discount generally applies.

Verification Costs and Requirements in Oaxaca

The approximate verification costs in Oaxaca are:

  • Private vehicles: approximately $624 pesos
  • Intensive-use vehicles: approximately $841 pesos
  • Double Zero: approximately $657 pesos

Main Requirements for Vehicle Verification in Oaxaca

  • Valid vehicle registration card, original and copy.
  • Payment form for the second verification period, generated through the Oaxaca Finance portal: siox.finanzasoaxaca.gob.mx

The procedures can be completed at one of the more than 20 verification centers operating throughout the state.

The service hours are generally:

  • Monday through Friday: 9:00 a.m. to 6:00 p.m.
  • Saturday: 9:00 a.m. to 3:00 p.m.

Vehicle owners are encouraged to complete the procedure within the corresponding period to avoid problems associated with failing to comply with the state’s verification requirements.

Source: oaxaca.heraldodemexico