Yes, a Texas DWI conviction carries a mandatory minimum period of confinement at every offense level. Even a first-offense DWI, if it results in a conviction, requires at least 72 hours in jail. The question for most defendants is not whether jail time is technically possible. It is what the actual exposure looks like, when alternatives to incarceration are available, and what it takes to avoid a conviction entirely.
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The Texas DWI Penalty Structure
Texas DWI penalties under Chapter 49 of the Penal Code are tiered by offense level, prior history, and aggravating factors. The following are the confinement ranges that apply upon conviction:
First Offense — Class B Misdemeanor
Confinement: 72 hours to 180 days in county jail.
Fine: Up to $2,000.
This is the baseline charge for a first-offense DWI with no aggravating factors and a BAC below 0.15 percent.
First Offense with BAC of 0.15% or Higher — Class A Misdemeanor
Confinement: Up to 1 year in county jail. No mandatory minimum beyond the standard misdemeanor floor.
Fine: Up to $4,000.
The BAC elevation from 0.08 to 0.15 raises the offense one level (from Class B to Class A) and doubles the maximum fine. This elevation is triggered by the test result, not by any additional conduct.
Second Offense — Class A Misdemeanor
Confinement: 30 days to 1 year in county jail. The 30-day floor is mandatory.
Fine: Up to $4,000.
A prior DWI conviction elevates a second offense to Class A and imposes a mandatory minimum period of confinement that cannot be suspended or waived.
Third Offense — Third-Degree Felony
Confinement: 2 to 10 years in TDCJ.
Fine: Up to $10,000.
A third DWI conviction is a felony regardless of how long ago the prior offenses occurred. Texas has no look-back window that limits when prior DWI convictions can be used for enhancement.
DWI with Child Passenger — State Jail Felony
Confinement: 180 days to 2 years in state jail.
Fine: Up to $10,000.
Any DWI in which a passenger under 15 years of age is present in the vehicle is elevated to a state jail felony under Texas Penal Code §49.045, regardless of BAC, prior history, or any other factor.
Intoxication Assault — Third-Degree Felony
Confinement: 2 to 10 years in TDCJ.
Fine: Up to $10,000.
Intoxication assault under §49.07 requires proof that the defendant caused serious bodily injury to another person by reason of intoxication. The causation element — whether the intoxication caused the injury rather than some other factor — is frequently the central defense issue.
Intoxication Manslaughter — Second-Degree Felony
Confinement: 2 to 20 years in TDCJ.
Fine: Up to $10,000.
Enhanced to a first-degree felony (5 to 99 years or life) when the victim was a peace officer, firefighter, or emergency medical services personnel acting in the line of duty.
Probation (Community Supervision): When It Is and Is Not Available
Community supervision (what most people call probation) allows a judge to defer or suspend a sentence and place the defendant under supervision for a specified period with conditions. For DWI defendants, the availability of community supervision is case-specific and in some circumstances is restricted by statute.
When Community Supervision Is Generally Available
For most first-offense DWI cases (including Class B misdemeanor DWI, Class A misdemeanor DWI at 0.15 BAC or higher, and DWI with child passenger) a judge retains discretion to grant community supervision in appropriate cases. Whether to recommend community supervision as a resolution depends on the strength of the evidence, the defendant’s history, the specific court, and what alternatives exist given the facts.
Intoxication Manslaughter: The Critical Restriction
Under Texas Code of Criminal Procedure Art. 42A.054, at trial a judge cannot grant community supervision to a defendant convicted of intoxication manslaughter. This is a hard statutory bar. However, a jury may recommend community supervision in an intoxication manslaughter case, and that recommendation is binding on the judge. The distinction between judge-recommended and jury-recommended supervision is why intoxication manslaughter cases that do not resolve through plea negotiation often proceed to trial. The jury is the only path to a supervised sentence if the defendant is convicted.
Felony DWI and Deferred Adjudication
Deferred adjudication is a form of community supervision in which the judge defers entry of a finding of guilt. If the defendant successfully completes the conditions of supervision, the charge is dismissed. For DWI specifically, deferred adjudication became available for first-offense cases under HB 3582, effective 2023, but only when the BAC was below 0.15 percent and the defendant has no prior DWI convictions or deferred adjudications. It is not available for felony DWI, intoxication assault, intoxication manslaughter, or DWI with child passenger.
CDL holders face a critical distinction: Deferred adjudication for DWI under Texas law is treated as a conviction for federal CDL disqualification purposes under FMCSA regulations. A commercial driver who accepts deferred adjudication to avoid a criminal conviction still loses their CDL for at least one year. For CDL holders, the only acceptable outcomes are dismissal or acquittal.
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What a Defense That Avoids Conviction Actually Looks Like
Community supervision is the alternative to incarceration. Avoiding a conviction entirely is the alternative to community supervision. For most defendants, the latter is a materially better outcome: no conviction on the record, no surcharges, no mandatory conditions, and in some circumstances eligibility for expunction of the arrest. Building that defense requires more than a general challenge to the charges.
The Lawfulness of the Stop
Every DWI defense begins with whether the traffic stop was lawful. Texas Article 38.23 exclusionary rule carries no good faith exception. A stop based on conduct that does not constitute a traffic violation, or an officer’s account of driving behavior that is contradicted by dashcam footage, is a stop that can be challenged. Evidence obtained following an unlawful stop is suppressible and that includes the field sobriety test results, the chemical test, and any statements made.
Field Sobriety Test Administration
Deandra Grant is a trained SFST instructor. HGN, walk-and-turn, and one-leg-stand results are only as valid as the administration. Incorrect stimulus speed, improper starting position, failure to screen for medical conditions affecting nystagmus, and scoring errors are documented in case after case. These are not technical arguments. They are challenges to whether the officer followed the government’s own protocol for the tests it chose to administer.
Chemical Test Reliability
Breath test results from the Intoxilyzer 9000 are subject to challenge on calibration, the 15-minute observation period, partition ratio variability, and operator certification. Blood test results are subject to challenge on collection procedure, in vitro fermentation from improper preservation, chain of custody, and laboratory GC-MS methodology. Deandra Grant and Douglas Huff both hold the ACS-CHAL Forensic Lawyer-Scientist designation which are the analytical chemistry credentials that allow evaluation of these results at the chemistry level, not just the procedural level. When a BAC number is the difference between a misdemeanor and a felony, or between a conviction and an acquittal, the reliability of that number is not an abstract question.
Causation in Intoxication Assault and Manslaughter Cases
In cases involving injury or death, the prosecution must prove not just intoxication but that the intoxication caused the injury or death. Other contributing factors (road conditions, the actions of other drivers, mechanical failure, the injured party’s own conduct) bear on causation and are examined in every intoxication assault and manslaughter defense.
If you are facing a DWI charge in Dallas County or North Texas (at any offense level) call Deandra Grant Law at (214) 225-7117 for a free, confidential consultation. The strength of the case against you depends entirely on the evidence. We evaluate that evidence before anything else.
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