Intoxication assault in Austin is a third-degree felony under Texas Penal Code § 49.07 that occurs when someone operates a vehicle while intoxicated and causes serious bodily injury to another person. A conviction can lead to 2 to 10 years in prison, fines up to $10,000, and a permanent felony record.
An intoxication assault charge isn't just a more serious version of a DWI. It is a felony accusation tied to real-world harm, and prosecutors in Travis County tend to treat these cases aggressively from the start.
For most people, this is the type of DWI charge that raises the stakes considerably. You’re no longer dealing with a traffic stop or a misdemeanor. You are facing the possibility of prison, a permanent record, and consequences that follow you long after the case is over.
But intoxication assault cases are rarely as clear-cut as they seem at first. A test result, an injury, or even your own assumptions about what happened do not automatically prove the case.
Prosecutors still have to establish intoxication, causation, and the extent of the injury beyond a reasonable doubt. Each of those elements can be challenged, and in many cases, the details don’t line up as cleanly as the initial report suggests.
The State begins building its case immediately. You should, too. Early, careful review of the evidence can uncover issues that significantly change the direction of the case.
Intoxication Assault Defense Attorney in Austin, Texas
At Michael & Associates, we understand the lifelong ramifications a felony conviction can have, and we approach every intoxication assault case in Travis County with that in mind.
Because intoxication assault involves a combination of DWI and assault allegations, you need an Austin attorney with experience handling both types of cases.
We test every piece of evidence, question every assumption, and prepare each case as if it will go to trial, because that’s what it takes to get the best possible outcome.
Your Austin DWI lawyer will:
- Scrutinize every element the prosecutors must prove
- Our DWI lawyer-scientists, including James Fletcher in Austin, will carefully analyze your blood test results to ensure that all testing protocols were properly followed
- Challenge breath, blood, and field testing methods
- Investigate whether intoxication actually caused the injury
- Prepare every case as if it will go to trial
According to internal 2025 data, our firm achieved favorable or partially favorable outcomes in approximately 65% of jury trials, with an outright win rate of 50%. That stands in sharp contrast to national conviction trends, where most criminal trials result in a conviction.
When your future is on the line, the details matter, and so does having a defense team that knows how to use them.
What Is Intoxication Assault in Texas?
Under Texas Penal Code § 49.07, intoxication assault is a third-degree felony occurring when someone operates a vehicle, aircraft, or amusement ride while intoxicated and causes "serious bodily injury" to another person.
It is also sometimes called “DWI with a serious bodily injury.”
Under Texas law, intoxication assault generally requires proof that:
- You were operating a motor vehicle in a public place
- You were intoxicated
- Your operation of the vehicle caused serious bodily injury to another person
Each of these elements must be proven beyond a reasonable doubt. If even one is weak or unsupported, the case may not hold.
How Texas Defines Intoxication
Texas law defines intoxication as either:
- Loss of normal mental or physical faculties due to alcohol, drugs, or a combination
- A blood alcohol concentration (BAC) of 0.08 or higher
But these definitions are often contested in real cases, especially when testing methods are flawed or improperly administered.
What Counts as “Serious Bodily Injury”?
A key element in intoxication assault cases is whether the alleged victim suffered “serious bodily injury,” as defined under Texas Penal Code § 1.07.
This typically means an injury that creates a substantial risk of death, causes serious permanent disfigurement, or results in long-term loss or impairment of a body part or organ.
This issue is often contested and can play a central role in the defense. Injuries may be overstated, develop later, or be unrelated to the alleged intoxication. Challenging this element is often central to the defense.
Intoxication Assault Penalties in Texas
Intoxication assault is typically charged as a third-degree felony, but it can be enhanced depending on the facts.
Penalties include:
- 2 to 10 years in prison
- Up to $10,000 in fines
In certain situations, intoxication assault can be enhanced to a second-degree felony, primarily in cases involving:
- Prior intoxication assault convictions
- Injuries involving severe neurological damage
- The alleged victim is a peace officer, firefighter, or EMS personnel
Penalties include:
- 2 to 20 years in prison
- Up to $10,000 in fines
Additional consequences
- Driver’s license suspension
- Mandatory installation of an ignition interlock device (IID)
- Mandatory treatment or education programs
- Permanent felony record
- Potential loss of firearm rights under federal law
How Intoxication Assault Cases Are Proven
Intoxication assault cases often turn on disputed evidence, including intoxication testing and whether the alleged injury was actually caused by impairment.
At the same time, these cases are rarely as straightforward as they first appear. They often depend on technical evidence, assumptions about impairment, and whether the State can actually prove that intoxication caused the injury. Those details matter, and they are where strong defenses are built.
We can analyze:
Breathalyzer devices estimate BAC, but results can be affected by:
- Calibration errors
- Medical issues (for example, GERD or diabetes)
- Environmental factors
Blood tests are often treated as more reliable, but they’re still vulnerable to:
- Improper collection or storage
- Chain-of-custody issues
- Lab errors
Standardized field sobriety tests
These are highly subjective and influenced by:
- Road conditions
- Fatigue
- Injury
- Officer interpretation
All three methods are challengeable, and a strong defense will analyze each carefully.
Key Defense Strategies in Intoxication Assault Cases
No two cases are the same, but common defense strategies include:
- Challenging intoxication
- Disputing causation
- Questioning serious bodily injury
- Suppressing evidence
Can Intoxication Assault Charges be Reduced?
In some cases, yes, intoxication assault charges in Austin can be reduced, but it depends on the strength of the evidence and how early the defense gets involved.
Prosecutors in Travis County must prove intoxication, causation, and serious bodily injury beyond a reasonable doubt. If there are weaknesses in any of those elements, such as unreliable breath or blood test results, gaps in the timeline, or questions about whether intoxication actually caused the injury, the charge may be reduced to a lesser offense like DWI or another charge, or potentially dismissed.
Early investigation, independent expert review, and a trial-ready defense strategy are often what create the leverage needed to negotiate a reduction.
What to Expect After an Arrest
An intoxication assault case typically involves:
- Arrest and booking
- Magistration (within 48 hours or without unnecessary delay)
- Bond conditions (which may include IID or travel limits)
- Ongoing investigation and evidence gathering
- Possible grand jury indictment
- Pretrial motions and negotiations
- Trial or resolution
Early intervention can significantly impact how the case develops.
Why Hiring an Intoxication Assault Attorney Early Matters
In felony cases, timing is part of the strategy. Waiting to hire a lawyer can cost you leverage.
An experienced intoxication assault attorney can:
- Preserve critical evidence
- Identify weaknesses in the case against you
- Coordinate independent testing or experts
- Manage communication with investigators
- Begin building a defense before charges escalate
Speak with an Austin Intoxication Assault Attorney Today
If you are facing an intoxication assault charge in Travis County, you’re dealing with a serious felony that can change your life. But an arrest is not a conviction.
If you’re facing an intoxication assault charge in Austin, the lawyer you choose matters. At Michael & Associates, your case is handled by senior attorneys only (we don’t hire junior associates) backed by more than 425 years of combined experience and over 800 jury trials. Our team includes former prosecutors and law enforcement, and we build every case for trial from day one.
The leader of our Austin office, James Fletcher, is also an accredited DWI scientist, whose training allows us to challenge breath and blood testing, causation, and other technical evidence at a deeper level than most firms.
If you want a defense that’s strategic, evidence-driven, and ready for court, now is the time to act. Call now or request a free case review to start building your defense immediately.
