We will cease accepting applications on May 1, 2019. Your voucher must be administratively complete by that date in order to be processed. All vouchers will expire on May 31, no exceptions.
Travis County processes Drive a Clean Machine applications for Williamson County. If your vehicle is registered in Williamson County, follow the same instructions to apply.

Has your vehicle failed the emissions portion of the required annual inspection?

If so, you may qualify for assistance with vehicle repairs (emissions related expenses only) or money for a down payment on a newer car. Check to see if you’re eligible:

  1. Verify that you meet the Income Eligibility requirements
  2. Make sure your vehicle complies with Vehicle Requirements
  3. Apply for assistance

Facts about the AirCheck Texas Drive A Clean Machine Program

Types of Assistance

  • Up to $600 for vehicle emissions related repairs
  • Up to $3,000 for a new car, SUV, or van, current model year or up to three model years old
  • Up to $3,000 for a pick-up truck, current model year or up to two model years old
  • Up to $3,500 for a hybrid vehicle, electric, natural gas of current or up to three model years old OR vehicles certified to Tier 3 Bin 85 or cleaner

Click here to view a an example list of certified Tier 3 Bin 85 or cleaner.

Eligible Vehicles for Purchase


  • Model year 2019 - 2016 cars, SUVs, and vans
  • Model year 2019 - 2016 pickup trucks
  • Model year 2019 - 2015 hybrid, electric, natural gas and all vehicles that have been certified to meet federal Tier 2, Bin 3 or cleaner Bin certification vehicles

List of cars and trucks that you can use your voucher to purchase by Model Year

Got Questions?

Email us at aircheck@traviscountytx.gov or call (512) 854-5020.

700 lavaca sm

Cynthia C. McDonald
County Executive

700 Lavaca Street, 5th Floor
PO Box 1748
Austin, Texas 78767 (Map)

Phone: (512) 854-9383
Fax: (512) 854-4697

Email TNR