Yes, a DWI charge in Texas can be dismissed, and dismissals happen more often than most people arrested for drunk driving realize. An arrest is not a conviction. The state still has to prove every element of its case, and it has to do so with evidence gathered legally. When the traffic stop was unlawful, the testing was mishandled, the officer’s account doesn’t match the video, or the prosecutor’s case has other serious weaknesses, the charge can be thrown out, reduced, or resolved through a diversion program that ends in dismissal.
Whether dismissal is realistic in your case depends on the specific facts of what happened before, during, and after the arrest. The grounds below are the ones Texas defense attorneys use most often.
Act on the 15-Day License Deadline First
Before anything else: a Texas DWI arrest triggers two separate cases. One is the criminal charge. The other is an administrative license suspension handled by the Department of Public Safety under the Administrative License Revocation program, and it runs on its own clock.
You have 15 days from the date you were served notice to request a hearing contesting the suspension. Miss that window and the request is denied, and the suspension takes effect automatically on the 40th day after you were served.1Texas Department of Public Safety. Administrative License Revocation (ALR) Program No grace period, no extension.
Requesting the hearing matters even beyond keeping your license. It forces the arresting officer to testify under oath early in the process, which gives your attorney a preview of the state’s evidence and locked-in testimony that can be used later in the criminal case.
Was the Traffic Stop Legal?
Every DWI case starts with a stop, and the officer needs a legal reason to make it. The standard is reasonable suspicion, which the U.S. Supreme Court defined in Terry v. Ohio as specific, articulable facts suggesting criminal activity or a traffic violation.2Justia. Terry v. Ohio, 392 U.S. 1 (1968) Weaving across lanes, running a red light, or an actual moving violation clears that bar. Driving slowly on a weekend night, by itself, usually does not.
If a court finds the officer lacked reasonable suspicion, the stop violated the Fourth Amendment. Under the fruit of the poisonous tree doctrine, everything gathered after an unconstitutional stop becomes inadmissible: the officer’s observations, your performance on sobriety tests, and your breath or blood results. Once that evidence is suppressed, the prosecution almost never has enough left to proceed, and the case gets dismissed.
One Texas-specific point: the state does not allow DWI sobriety checkpoints. A 1991 Texas appellate court found roadblocks illegal because no state statute authorizes them. A stop made without an individualized reason at what looked like a checkpoint was almost certainly unlawful.
Attacking the Sobriety Testing
Field Sobriety Tests
The three Standardized Field Sobriety Tests, including the walk-and-turn and one-leg stand, only work when administered the way NHTSA’s manual specifies. The manual lays out exactly how officers must instruct, demonstrate, and score each test.3National Highway Traffic Safety Administration. DWI Detection and Standardized Field Sobriety Testing Participant Manual NHTSA’s own instructor guide acknowledges that departures from ideal conditions “may have some effect on the evidentiary weight given to the results.”4National Highway Traffic Safety Administration. DWI Detection and Standardized Field Sobriety Testing Instructor Guide
In the real world, these tests happen on the roadside at night, often on uneven pavement, with traffic going by. Medical conditions, injuries, age, weight, and nerves can make a sober person look impaired. An officer who gives unclear instructions or skips the demonstration has compromised the test before it begins. Field sobriety tests are voluntary in Texas, and declining is not evidence of guilt.
Breath Tests
Texas breath testing instruments must be calibrated using certified reference materials traceable to the National Institute of Standards and Technology, and the test must be administered by an operator holding a valid DPS certificate.5Texas Department of Public Safety. Breath Alcohol Program Texas administrative rules also require the operator to remain in the subject’s presence for at least 15 minutes before the test to make sure nothing enters the mouth that could affect the reading. A failure in any of these protocols opens the door to a challenge.
The machines themselves can also produce bad readings. Gastroesophageal reflux disease can push stomach alcohol into the mouth and inflate the result. Certain low-carbohydrate diets produce acetone on the breath, which some devices misread as alcohol.
Then there’s the rising blood alcohol defense. Alcohol takes anywhere from 30 minutes to two hours to fully absorb into the bloodstream, depending on food intake, metabolism, and how fast the person was drinking. If your last drink was shortly before you drove, your BAC could have been under 0.08 behind the wheel and still rising while the officer completed the stop and set up the test. A toxicologist can often reconstruct that absorption curve.
Blood Tests
Blood draws are generally more reliable than breath, but they come with their own legal and procedural problems. The biggest is the warrant requirement. In Missouri v. McNeely, the U.S. Supreme Court held that the natural dissipation of alcohol in the bloodstream does not, by itself, justify a warrantless blood draw in every case. When officers can reasonably get a warrant without undermining the search, the Fourth Amendment requires them to do so.6Justia. Missouri v. McNeely, 569 U.S. 141 (2013) A warrantless draw without valid consent or exigent circumstances is vulnerable to suppression.
Even a properly drawn sample has to be handled correctly after the fact. The chain of custody, from the moment the blood is drawn to the moment it’s tested, has to be unbroken. Gaps in documentation, improper refrigeration, contamination, or testing delays can degrade the sample or call the results into question. Defense attorneys routinely subpoena lab records and instrument maintenance logs looking for exactly these problems. When the blood evidence is excluded, the case often falls apart.
Constitutional Violations That Can End the Case
The Sixth Amendment guarantees a speedy trial, and courts have generally treated delays approaching one year as presumptively prejudicial.7Legal Information Institute. Amdt6.3.6 Length of Delay and the Right to a Speedy Trial That doesn’t automatically mean dismissal. Courts weigh the length of the delay, the reason for it, whether the defendant asserted the right, and whether actual harm resulted.8Constitution Annotated. Amdt6.2.9 Prejudice and Right to a Speedy Trial But when the state drags its feet without good reason and the defense is prejudiced because witnesses forget or evidence disappears, the case can be thrown out.
Prosecutors also have an obligation under Brady v. Maryland to turn over any evidence favorable to the defense, whether it goes to guilt or punishment.9Justia. Brady v. Maryland, 373 U.S. 83 (1963) In DWI cases, that often means dashcam or body camera video showing the defendant speaking clearly, walking steadily, or behaving normally. Withholding that evidence is a due process violation that can result in dismissal.
Inconsistencies between an officer’s written report and their testimony can also sink a case. If the report describes slurred speech and swaying but the video shows a person standing still and speaking clearly, the officer’s credibility is gone. Prosecutors know what that looks like to a jury, and they sometimes dismiss rather than try a case with a compromised witness.
Negotiated Dismissals and Pretrial Diversion
Not every dismissal comes out of a suppression hearing. Some come from direct negotiation with the prosecutor, often by swapping a DWI plea for a plea to a lesser offense like obstruction of a highway or reckless driving. Neither carries the lasting stigma of a DWI.
Some Texas counties also offer pretrial diversion programs for first-time offenders. Eligibility varies by county, but programs typically require no prior criminal history and no accident involving another person. If accepted, you enter an agreement similar to probation lasting from six months to two years, with conditions that can include:
- Completing an alcohol education or substance abuse course
- A set number of community service hours
- Program fees covering administration and monitoring
- An ignition interlock device for part or all of the program period
Complete every requirement, and the DWI is formally dismissed. Fail to comply, and the original charge returns, with your negotiating position worse than when you started.
Clearing the Record After a Dismissal
A dismissal does not automatically erase the arrest. It still shows up on background checks unless you take a separate step, and Texas offers two different paths depending on how the case ended.
An expunction completely erases the arrest record. Once granted, no one can access it, and you can legally deny the arrest happened, including on job applications. If your DWI was dismissed and you were not placed on community supervision or deferred adjudication for the offense, you are generally eligible. For a Class B misdemeanor DWI where no charges were ever filed, the wait is at least one year from the date of arrest. If charges were filed and then dismissed, the court looks at the reason for the dismissal when deciding eligibility.10Justia. Texas Code of Criminal Procedure Title 1, Chapter 55
An order of nondisclosure is more limited. It seals the record from the public but still lets certain government agencies and licensing boards see it. If you received deferred adjudication for a misdemeanor DWI and completed it, you may petition for nondisclosure after a two-year waiting period, but only if your BAC was below 0.15, no accident involving another person occurred, and you had no prior criminal history beyond minor traffic offenses. A straight conviction rather than deferred adjudication brings longer waits and additional restrictions.11Texas Courts. An Overview of Orders of Nondisclosure
If your case was dismissed, pursuing expunction is almost always worth it. A dismissed charge sitting on your record still shows up to employers and landlords; an expunged one does not exist.