Can you beat a DWI in Texas?
Yes. Texas DWI cases are beaten on three fronts: the legality of the traffic stop, the reliability of field sobriety and chemical testing, and the chain of custody for blood samples. Each is governed by a specific statute or case law line, and each can be challenged. An experienced DWI lawyer targets the weakest link, not the strongest evidence.
- Texas DWI is defined in Tex. Penal Code §49.04. The limit is 0.08% for adults, 0.04% for commercial drivers, and any detectable amount under 21.
- Refusing a breath or blood test triggers an automatic 180-day license suspension under Tex. Transp. Code §724.035.
- You have 15 days from arrest to request an ALR hearing, or your license is suspended automatically.
- A first DWI is a Class B misdemeanor: up to 180 days in jail and a $2,000 fine.
- The three highest-value defenses: an unlawful stop, flawed field testing, and a broken blood-draw chain of custody.
What Texas calls a DWI
Texas does not use "DUI" for adult drivers. Under Tex. Penal Code §49.04, the offense is Driving While Intoxicated. The law defines intoxication two ways in §49.01(2): losing the normal use of your mental or physical faculties because of alcohol or drugs, or having a blood alcohol concentration of 0.08% or more.
That two-part definition matters. Even if your BAC came back under 0.08, a prosecutor can still pursue the case on the "loss of normal use" theory. That is why the video of the stop, your field test performance, and the officer's notes carry as much weight in some trials as the chemical number itself. The flip side is also true: a number above 0.08 is not the end of the case if the testing was flawed.
If you were charged as a minor, different rules apply. See DWI vs DUI in Texas: what the difference really means.
How Texas ranks DWI offenses
- First DWI: Class B misdemeanor. Up to 180 days jail, up to $2,000 fine.
- First DWI with BAC 0.15 or more: Class A misdemeanor. Up to 1 year jail, up to $4,000 fine.
- Second DWI: Class A misdemeanor with a 30-day minimum.
- Third DWI or more: Third-degree felony. 2 to 10 years prison.
- DWI with a child passenger under 15: State jail felony, even on a first offense.
- Intoxication assault: Third-degree felony.
- Intoxication manslaughter: Second-degree felony. 2 to 20 years.
Facing a first offense? The full picture, including probation and deferred adjudication options, is in First DWI in Texas: penalties and how to protect your record.
The traffic stop: where most DWI defenses start
Every Texas DWI case begins with a stop, and every stop has to clear a constitutional bar: reasonable suspicion that a traffic violation or crime is occurring. If the stop fails that test, everything that follows it, the field tests, the breath sample, the arrest itself, can be suppressed.
Dallas-area officers most often cite weaving, failure to signal, expired registration, or a defective light. A trial-ready lawyer pulls the in-car and body camera video and watches every minute before the overhead lights came on. If the violation the officer wrote down is not visible on the video, the motion to suppress almost writes itself. Texas courts have repeatedly held that minor movement within a single lane, without more, does not justify a stop.
"Failure to maintain a single lane" is not automatically a valid stop
Under Tex. Transp. Code §545.060, drifting within a marked lane is not itself an offense. The statute requires that the movement be unsafe. Small lateral movements that stay inside the lane are a common stated reason for a stop, and the dashcam often shows less than the report describes. Where the video does not support the stop, everything gathered afterward, including the tests and any specimen, is open to a motion to suppress.
Field sobriety tests are not as solid as they look
Texas officers use three standardized field sobriety tests: the horizontal gaze nystagmus (eye) test, the walk-and-turn, and the one-leg stand. Two facts the State will not volunteer: these tests are not perfectly reliable even when run correctly, and they are only considered valid when administered exactly to the national standard.
Things that undermine field test results in court:
- Tests run on a sloped shoulder, gravel, or uneven pavement
- Patrol car strobes and passing headlights interfering with the eye test
- Footwear, weight, age over 65, or documented medical conditions affecting balance
- Compressed or skipped instructions, visible on the video
- An officer who is not certified as an instructor being pressed on the details of administration
Arrested for DWI in Dallas this week?
The 15-day license clock started the day of your arrest. Get a free, confidential case review and we will request the hearing and pull the video before evidence disappears.
Breath and blood evidence
If you gave a breath sample in Dallas County, it almost certainly ran through an Intoxilyzer 9000. The machine relies on infrared analysis, and its results can be challenged on calibration records, maintenance history, the required 15-minute observation period, and mouth alcohol contamination from belching, reflux, or dental work.
Blood cases open a different set of doors: the validity of the warrant, the qualifications of the person who drew the blood, the preservative and storage of the tube, and the lab's gas chromatography records. Blood looks airtight to a jury until the chain of custody gets walked through link by link.
The State must also connect the number to the time you were driving, not the time you were tested. Alcohol keeps absorbing after you stop drinking, which means a BAC measured an hour after the stop can be higher than it was behind the wheel. Lawyers call this the rising BAC defense, and in the right facts it creates reasonable doubt.
If you refused the test
Texas is an implied consent state. Refusing a breath or blood test triggers an automatic 180-day license suspension for a first refusal under Tex. Transp. Code §724.035, and prosecutors may argue the refusal shows consciousness of guilt. But refusal also denies the State its single strongest piece of evidence, and on a non-warrant night that can change the entire case.
Whether refusal helped or hurt you depends on the facts, including whether police obtained a blood warrant anyway. We cover the full decision tree, including no-refusal weekends in Dallas County, in What happens if you refuse a breathalyzer in Texas.
The ALR hearing: 15 days, no extensions
The Administrative License Revocation hearing is a civil case about your driver's license, separate from the criminal charge. You must request it within 15 days of the arrest or the suspension becomes automatic on day 41.
Even when the hearing is hard to win, it is worth requesting, because the officer testifies under oath months before any criminal trial. That sworn testimony locks in the State's story early and becomes the cross-examination roadmap later. We walk through the whole process, including what DPS has to prove, in The Texas ALR hearing explained.
What a conviction actually costs
| Consequence | Detail |
|---|---|
| Criminal record | A Texas DWI conviction is permanent. It cannot be expunged. |
| License | Suspension up to 1 year on a first offense, plus reinstatement fees |
| Insurance | High-risk SR-22 coverage typically required for three years |
| Interlock | Required on second offenses and any case with BAC 0.15 or more |
| Employment | Shows on background checks for jobs, licenses, and leases |
| Immigration | Can complicate status and naturalization in some circumstances |
One narrow exception exists on the record question: since 2017, some first-time non-aggravated DWI outcomes can be sealed later through a nondisclosure petition under Tex. Gov't Code §411.0731. Sealing is not erasing, and eligibility has conditions, but it matters when you are planning the endgame of a case.
The defenses that actually work
After 31 years of trying these cases in and around Dallas County, these are the challenges that most consistently change outcomes:
- Suppressing the stop. The highest-value motion in DWI practice. No valid stop, no case.
- Attacking field test administration. Especially the eye test, which has strict procedural requirements most juries never hear about until cross-examination.
- The rising BAC defense. Your level at the time of driving is the only number that counts.
- Medical explanations. Reflux and GERD can contaminate breath samples. Inner ear conditions can mimic the eye test clues.
- Chain of custody attacks on blood. Every hand that touched the tube is a question.
- Suppressing statements. Anything you said in custody before proper warnings can often be excluded.
Which defense fits your case is a records question, not a guess. That is why the first step is always the same: get the video, the maintenance logs, and the lab file. That work starts with a DWI defense review.
- Texas DWI cases are winnable. Most have at least one challengeable link.
- The 15-day ALR deadline is the most urgent step after any DWI arrest.
- Refusal has consequences but is not the end of the case. Neither is a failed test.
- A conviction is permanent. The fight for dismissal or reduction happens before a plea, not after.
- Prosecutors negotiate differently with trial lawyers. Experience is leverage.
Frequently asked questions
What is the legal BAC limit for DWI in Texas?
0.08% for drivers 21 and older, 0.04% for commercial drivers, and any detectable amount for drivers under 21 under the Zero Tolerance law.
Can you beat a DWI in Texas?
Yes. The three main fronts are the legality of the stop, the reliability of the testing, and the chain of custody for blood evidence. The right challenge depends on the video and records in your specific case.
How long does a DWI stay on your record in Texas?
A conviction is permanent and cannot be expunged. Some first-time deferred adjudication outcomes can be sealed later through a nondisclosure petition under Tex. Gov't Code §411.0731.
What is the penalty for a first DWI in Texas?
A Class B misdemeanor: up to 180 days in jail, a fine up to $2,000, and a license suspension up to one year. A BAC of 0.15 or more raises it to a Class A misdemeanor. Details in our first DWI guide.
Should I refuse a breathalyzer in Texas?
Refusal triggers an automatic 180-day suspension, but it may still be the right call in limited situations. If you can, talk to a lawyer before deciding. Full breakdown in our refusal guide.
This guide is general legal information about Texas law, not legal advice about your case. Reading it does not create an attorney-client relationship. If you are facing charges, speak with a licensed Texas criminal defense attorney about your specific facts. Was your arrest in Dallas County? Request a free case review.