Intoxication assault in Texas is a third-degree felony punishable by two to ten years in prison and a fine of up to $10,000. You can be charged under Penal Code Section 49.07 if you operate a vehicle while intoxicated and cause serious bodily injury to another person. The charge rises to a second-degree or first-degree felony when the injured person is a first responder or judge on duty, or when the victim is left in a persistent vegetative state from a traumatic brain injury.1State of Texas. Texas Penal Code 49.07 – Intoxication Assault
What the State Has to Prove
Prosecutors must establish four things: that you were operating a motor vehicle, aircraft, watercraft, or amusement ride; that you were intoxicated at the time; that your intoxication caused serious bodily injury to someone else; and that the incident happened in a public place (for motor vehicles) or during operation or assembly of the craft or ride.1State of Texas. Texas Penal Code 49.07 – Intoxication Assault
Texas defines “intoxicated” two ways, and the state only has to prove one. Either your blood alcohol concentration was 0.08 or higher, or you had lost the normal use of your mental or physical abilities because of alcohol, drugs, or some combination.2Texas Department of Transportation. Impaired Driving and Penalties – DUI/DWI That second prong matters. Someone can be convicted even with a BAC under 0.08 if field sobriety performance or witness testimony shows impairment.
One phrase in the statute surprises people: the offense occurs “by accident or mistake.” Prosecutors do not have to prove you meant to hurt anyone. The decision to drive impaired is the choice the law punishes, and the crash itself can be fully accidental.1State of Texas. Texas Penal Code 49.07 – Intoxication Assault The state still has to tie your intoxication to the injury. If the collision resulted entirely from mechanical failure or the other driver’s conduct, the causation element breaks down.
What Counts as Serious Bodily Injury
Not every injury qualifies. Section 1.07 defines serious bodily injury as harm that creates a substantial risk of death, causes death, results in serious permanent disfigurement, or causes long-term loss or impairment of a bodily organ or limb.3State of Texas. Texas Penal Code 1.07 – Definitions A broken arm that heals cleanly probably falls short. A shattered pelvis requiring multiple surgeries, a brain injury with lasting cognitive effects, or facial scarring that permanently changes someone’s appearance almost certainly meets the threshold.
This definition is the line between a DWI with an accident and a felony intoxication assault charge. If the injuries clear the bar, the charge applies even if the victim has largely recovered by the time of trial.
The Standard Sentence
A baseline conviction carries two to ten years in the Texas Department of Criminal Justice and a fine of up to $10,000.4State of Texas. Texas Penal Code 12.34 – Third Degree Felony Punishment The judge chooses the exact term within that range based on the facts and the defendant’s history.
Community supervision is available in some cases, but it is not the escape hatch people assume. Courts can require a period of confinement in county jail as a probation condition, and for intoxication offenses judges often do. Supervision fees, treatment programs, community service hours, and regular reporting pile up over years.
When the Penalty Goes Up
Section 49.09 raises the offense level when the victim falls into a protected category or suffers catastrophic harm:5State of Texas. Texas Penal Code 49.09 – Enhanced Offenses and Penalties
- Second-degree felony, carrying 2 to 20 years, when the victim is a firefighter or EMS worker injured while performing official duties, or when any victim is left in a persistent vegetative state by a traumatic brain injury.6State of Texas. Texas Penal Code 12.33 – Second Degree Felony Punishment
- First-degree felony, carrying 5 to 99 years or life, when the victim is a peace officer or judge injured while carrying out official duties.7State of Texas. Texas Penal Code 12.32 – First Degree Felony Punishment
The jump is significant. Seriously injuring an on-duty police officer in a drunk-driving crash exposes a defendant to a sentence that can run the rest of a person’s life. All tiers carry the same $10,000 fine ceiling, so the prison exposure is where the real difference sits. The officer, firefighter, or judge must have been actively working at the time; off-duty injuries do not trigger the enhancement.
License, Interlock, and Insurance
When a court grants community supervision for an intoxication offense, it can require an ignition interlock on your vehicle, a device that forces you to pass a breath test before the engine will start. Installation is mandatory, not optional, in several situations: a BAC of 0.15 or higher at the time of the offense, a prior intoxication conviction, or being under 21 when the offense occurred.8State of Texas. Texas Code of Criminal Procedure Art. 42A.408 – Community Supervision
Interlock installation and monthly monitoring typically run $70 to $110 per month, and the court can order the device to stay installed for at least half the supervision period. You cannot drive any vehicle without one during that time, which practically limits you to a single car. A conviction also triggers a driver’s license suspension under the Transportation Code, and SR-22 high-risk insurance is required for years afterward, pushing premiums up substantially.
If the Victim Dies
If the person injured in the crash dies from those injuries, the charge shifts to intoxication manslaughter under Section 49.08. That is a second-degree felony with a sentence of 2 to 20 years and the same $10,000 fine ceiling.9State of Texas. Texas Penal Code 49.08 – Intoxication Manslaughter The Section 49.09 enhancements still apply: if the person who died was an on-duty peace officer or judge, the charge becomes a first-degree felony.
Timing matters. A victim who initially survives with severe injuries but later dies from complications can push an intoxication assault case into intoxication manslaughter weeks or months after the crash. That possibility sits over the case from day one.
Costs Beyond the Statutory Fine
The $10,000 maximum fine is often the smallest financial piece. Courts routinely order restitution for the victim’s economic losses, including medical bills and property damage. Criminal restitution does not cover pain and suffering or future damages, so the victim can also bring a separate civil lawsuit for amounts well above the restitution order.
Defending a felony intoxication assault case commonly runs from $5,000 to $50,000 or more in attorney fees, depending on complexity and whether it reaches trial. Add interlock costs, years of elevated insurance premiums under the SR-22 requirement, supervision fees, and any lost income from incarceration, and the total financial exposure frequently climbs into six figures.
A felony conviction also leaves a lasting record. Employers, landlords, and professional licensing boards all run background checks, and a felony intoxication assault conviction is difficult to explain away. For anyone whose work requires a clean record or a commercial driver’s license, the conviction can end a career.