There are a few ways to put a mechanic lien on a car in Texas. The most common way is to file a mechanic lien claim with the Texas Department of Licensing and Regulation (TDLR). You can also file a mechanic lien claim with the Texas Comptroller’s Office. If you file a mechanic lien claim with the TDLR, you will need to provide evidence that your mechanic has performed services on your car that were not authorized by the owner or driver. You will also need to provide documentation that shows that you have paid for the services rendered. If you file a mechanic lien claim with the Comptroller’s Office, you will need to provide evidence that your mechanic has performed services on your car that were not authorized by the owner or driver. You will also need to provide documentation that shows that you have paid for the services rendered.