Texas emissions testing guides
Each guide answers one question in plain English and shows, next to every rule, fee or date, the words of the official page it comes from: TCEQ, the Texas Department of Public Safety, the Texas Department of Motor Vehicles or the Texas Legislature.
Which counties
- Which Texas counties require an emissions test?
The 17 Texas counties that require a vehicle emissions test before registration, plus Bexar County from November 1, 2026, with fees and start dates.
- Texas counties that do not require an emissions test
Texas has 254 counties and 236 of them have no vehicle emissions test. What still applies there since safety inspections ended in 2025.
- Bexar County emissions testing: what changes on November 1, 2026
San Antonio and Bexar County start vehicle emissions testing on November 1, 2026: who must test, the $18.50 station fee plus $2.75 at registration, and timing.
- Registered in an emissions county but living or driving elsewhere
DPS exceptions for vehicles registered in a Texas emissions county but kept in another county: fleets, hunting vehicles, people who moved, students.
- Texas cities that lie partly inside and partly outside an emissions county
Austin, Katy, Baytown, Schertz and other Texas cities have residents on both sides of an emissions-county line. Why the county, not the city, decides.
Costs and fees
- How much is an emissions test in Texas?
Texas emissions test fees by county: up to $18.50 or $11.50 at the station, plus the state fees paid at registration. Official figures with sources.
- The Texas inspection program replacement fee
Why Texas registrations carry a $7.50 inspection program replacement fee ($16.75 for new vehicles) since 2025: who pays, who is exempt, where it goes.
- Commercial vehicle inspections in Texas after 2025
Texas ended safety inspections for non-commercial vehicles in 2025, but commercial vehicles still need an annual inspection in every county. Fees and rules.
Rules and changes
- Texas ended most vehicle safety inspections on January 1, 2025
House Bill 3297 ended annual safety inspections for non-commercial vehicles on January 1, 2025. Emissions tests continue in 17 counties, plus Bexar in 2026.
- Is there still a Texas inspection sticker? How “Two Steps, One Sticker” works
Texas stopped issuing inspection stickers on March 1, 2015. Pass the inspection first, then register: how the two steps and proof of inspection work today.
- Texas vehicle emissions testing: a timeline from 2002 to 2026
Key dates of the Texas emissions program: OBD tests from 2002, one sticker in 2015, 1995 and older exempt in 2020, no safety inspections in 2025, Bexar in 2026.
- Is Texas getting rid of emissions testing?
HB 5033 (2025) ends the Texas emissions program only if specific federal changes are triggered. Until then testing continues, with Bexar County added in 2026.
- On-road emissions checks (remote sensing) in Texas
Texas uses roadside remote sensing to spot high-emitting vehicles. What happens if your vehicle is flagged: an inspection within 30 days, or no registration.
- Texas emissions testing by the numbers
From TCEQ’s 2024 program evaluation: 20.1 million OBD tests in 2022-2023, 94,372 repairs, $5.4 million spent on repairs, and how many stations test.
- Texas emissions inspection stations: how to find one
Thousands of Texas businesses are DPS-certified emissions stations, including repair shops and oil-change shops. How to find one and what each county has.
The test itself
- What happens during a Texas emissions test
The Texas emissions test is an OBD II computer check of the check-engine light, trouble codes and readiness monitors. What is checked and why cars fail.
- Readiness monitors and “not ready” results
Why a Texas emissions test fails on “not ready” monitors, how many are allowed (one for 2001 and newer, two for 1996-2000) and how a drive cycle resets them.
- Can you pass a Texas emissions test with the check-engine light on?
In Texas a check-engine light that is commanded on with a stored trouble code fails the OBD emissions test, and so does a bulb that does not light. What to do.
- Failed a Texas emissions test? What to do next
After a failed Texas emissions test: repair, a free re-test at the same station within 15 days, waivers, and the TCEQ non-compliance remark at renewal.
- How to prepare for a Texas emissions test
Before a Texas OBD emissions test: fix any check-engine light, avoid clearing codes or disconnecting the battery, drive normally so monitors are ready.
Registration
- Renewing your Texas registration in an emissions county
In the 18 Texas emissions counties the renewal needs a passing emissions test first. Timing (90 days), the inspection report (VIR), copies and what to bring.
- New to Texas: the emissions test and registering your vehicle
New Texas residents have 30 days to register a vehicle. In the 18 emissions counties a passing emissions test comes first. Steps, fees and documents.
- Out of state, military or a student: Texas emissions rules
Active-duty military, full-time students, seasonal Texans and a few others can self-certify a vehicle is out of state at renewal. Rules for military bases.
- Expired Texas registration: the grace period and late renewal
Texas gives five working days after a registration expires before a citation of up to $200. In emissions counties you still need the test before renewing late.
Exemptions and waivers
- Which vehicles need an emissions test in Texas?
In the Texas emissions counties, gasoline vehicles 2 through 24 years old are tested every year with the OBD test. Who is in the window and who is not.
- Vehicles exempt from Texas emissions testing
Texas does not emissions-test electric cars, diesels, motorcycles, mopeds, antiques, classic cars or vehicles over 24 years old. Official wording and sources.
- Do 25-year-old cars, antiques and classics need an emissions test in Texas?
Texas tests gasoline vehicles only through 24 years old, so older cars drop out of the program. Antique-registered vehicles and classic cars are exempt.
- Electric and hybrid cars and the Texas emissions test
Electric vehicles are not emissions-tested in Texas but pay a $200 annual EV fee. TCEQ’s list of untested vehicles names electric vehicles, not hybrids.
- Texas emissions waivers and time extensions
The four Texas emissions waivers and extensions: Individual Vehicle ($600, $450 in El Paso), Low Mileage, Low-Income and Parts Availability. Who qualifies.
- Recognized Emissions Repair Facilities (RERFs)
A Texas RERF is a repair shop recognized by DPS for emissions repairs. It matters for waivers: diagnosis, parts and labor all count toward the minimum.