Official sources

Every rule, fee and date on this site comes from these official pages and documents. Each was reviewed in October 2026.

1. TCEQ – Vehicle Emissions Inspections in Texas (program overview)
   https://www.tceq.texas.gov/airquality/mobilesource/vim/overview.html
2. TCEQ – Highlights of the Vehicle I/M Program (San Antonio Area / Bexar County)
   https://www.tceq.texas.gov/airquality/mobilesource/vim/highlights.html
3. Texas DPS – Bexar County Emission Inspections FAQ
   https://www.dps.texas.gov/section/vehicle-inspection/faq/bexar-county-emission-inspections
4. Texas DPS news release, Jan 5, 2026 – Upcoming Emissions Test Requirement in Bexar Co.
   https://www.dps.texas.gov/news/dps-reminds-texans-upcoming-emissions-test-requirement-bexar-co
5. Texas DPS – Vehicle Safety Inspection Program Changes Now in Effect
   https://www.dps.texas.gov/news/vehicle-safety-inspection-program-changes-now-effect
6. Texas DPS – Inspection Criteria for Emission Inspection
   https://www.dps.texas.gov/section/vehicle-inspection/inspection-criteria-emission-inspection
7. Texas DPS – Emissions Testing FAQ (OBDII test, exemptions, failures)
   https://www.dps.texas.gov/section/vehicle-inspection/faq/emissions-testing
8. Texas DPS – Ready or Not (readiness monitors)
   https://www.dps.texas.gov/section/vehicle-inspection/faq/ready-or-not
9. Texas DPS – Waivers and Time Extensions
   https://www.dps.texas.gov/section/vehicle-inspection/waivers-and-time-extensions
10. Texas DPS – Unique Vehicles (antique, classic, motor homes)
    https://www.dps.texas.gov/section/vehicle-inspection/unique-vehicles
11. Texas DPS – Cost of Inspection
    https://www.dps.texas.gov/section/vehicle-inspection/cost-inspection
12. Texas DPS – Vehicle Inspection Station Locator
    https://www.dps.texas.gov/apps/RSD/VI/VIactiveStationLocator/
13. TxDMV Registration & Title Bulletin #003-26 (Sept 14, 2026) – Bexar County Emissions Testing Requirements (PDF)
    https://www.txdmv.gov/sites/default/files/body-files/RTB_003-26_Bexar_County_Emissions_Testing_Requirements.pdf
14. TxDMV Fee Chart 1C – Schedule of Texas Registration Fees, effective Jan 1 – Dec 31, 2026 (PDF)
    https://www.txdmv.gov/sites/default/files/body-files/FeeChart_1C.pdf
15. TxDMV – Register Your Vehicle (fees, renewal options, FAQs)
    https://www.txdmv.gov/motorists/register-your-vehicle
16. Bexar County Tax Assessor-Collector – Vehicle Registration & Renewal
    https://www.bexar.org/1601/Motor-Vehicle
17. 30 Texas Administrative Code §114.50, Vehicle Emissions Inspection Requirements (rule text via the Justia mirror of the official TAC)
    https://regulations.justia.com/states/texas/title-30/part-1/chapter-114/subchapter-c/division-1/section-114-50/

Known gaps in official guidance (Oct 2026)

• Hybrids aren't named directly; we treat them as gasoline-powered.
• The state emissions fee is shown as $2.75 by TxDMV and $2.50 on a TCEQ highlights page.
• The Bexar County DPS waiver/challenge station location isn't published yet.
• The DPS out-of-county-use exception predates the end of safety inspections.
• The $600 Individual Vehicle Waiver minimum comes from a 2020 DPS FAQ.
• How a model year maps to the 2- and 24-year cut-offs at a given renewal isn't spelled out.