In Texas, DUI applies only to drivers under 21 and requires any detectable amount of alcohol. DWI applies to adults and minors who are legally intoxicated, usually defined as a blood alcohol concentration (BAC) of 0.08% or higher or evidence of impairment.
Although the terms are often used interchangeably, DUI and DWI are legally distinct charges in Texas, with different definitions, requirements, and penalties.
This guide explains:
- What DUI means in Texas
- What DWI means in Texas
- How the charges differ
- When a minor can face both DUI and DWI
Key Takeaways
- In Texas, DUI stands for driving under the influence. It applies to minors under the legal drinking age of 21
- DWI (driving while intoxicated) applies to adults and minors whose blood alcohol concentration exceeds .08
- There is no minimum BAC requirement for a DUI charge – any sign at all that a minor was consuming alcohol is enough
What Is a DUI in Texas? (Under 21, Zero Tolerance)
A DUI (Driving Under the Influence) in Texas applies only to drivers under the age of 21 and requires any detectable amount of alcohol in the body — intoxication is not required.
Texas follows a zero-tolerance policy for underage drinking and driving. A minor does not have to be drunk, impaired, or above a specific BAC level to be charged with DUI.
Texas Law Definition of DUI
Under the Texas Alcoholic Beverage Code § 106.041:
A minor commits an offense if the minor operates a motor vehicle in a public place, or a watercraft, while having any detectable amount of alcohol in the minor’s system.
The key phrase is “any detectable amount of alcohol.” This means:
- One drink can be enough
- A BAC below 0.08% is still chargeable
- Observations by a police officer (e.g., the smell of alcohol, an admission of drinking) may be sufficient.
Can a Minor Be Charged With DWI in Texas?
Yes. Minors can be charged with DWI if they meet the legal definition of intoxication.
If a driver under 21:
- Has a BAC of 0.08% or higher, or
- Shows signs of impairment (slurred speech, failed field sobriety tests, loss of normal mental or physical faculties)
They may be charged with DWI instead of — or in addition to — DUI.
What Is a DWI in Texas?
A DWI (Driving While Intoxicated) applies to any driver, regardless of age, who is intoxicated while operating a motor vehicle in a public place.
Texas Law Definition of DWI
Under Texas Penal Code § 49.04:
A person commits an offense if the person is intoxicated while operating a motor vehicle in a public place.
Texas law defines “intoxicated” as either:
- Loss of normal mental or physical faculties due to alcohol, drugs, or a combination of substances, or
- A BAC of 0.08% or higher
Important: A BAC test is not required for a DWI arrest. An officer may rely on observations and circumstantial evidence.
Related: How often are DWIs dismissed in Texas?
DUI vs. DWI in Texas
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DUI:
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Applies only to drivers under 21
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Any detectable alcohol is enough
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No minimum BAC required
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Related: Texas DUI Laws -- what parents need to know
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DWI:
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Applies to all drivers
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Requires intoxication or BAC ≥ 0.08%
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Carries harsher penalties, including jail time
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Related: What happens on a first DWI in Texas
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Minor with BAC ≥ 0.08%:
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Can be charged with DWI, and potentially both DUI and DWI
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Related: Key legal DWI and DUI terms explained
DWI vs. DUI in Texas: Side-by-Side Comparison
In Texas, DUI is a zero-tolerance offense for drivers under 21, while DWI is an intoxication offense that applies to drivers of any age and carries significantly harsher penalties.
| Category | DWI (Driving While Intoxicated) | DUI (Driving Under the Influence) |
|---|---|---|
| Who can be charged? | Any driver, regardless of age | Only drivers under age 21 |
| Legal basis | Texas Penal Code § 49.04 | Texas Alcoholic Beverage Code § 106.041 |
| Required intoxication? | Yes — impairment or BAC ≥ 0.08% | No — intoxication not required |
| Minimum BAC required | 0.08% or loss of normal faculties | None (any detectable alcohol) |
| Zero-tolerance law applies? | No | Yes |
| Typical charge level (first offense) | Class B misdemeanor | Class C misdemeanor |
| Maximum fine | Up to $2,000 | Up to $500 |
| Jail time possible? | Yes — 3 to 180 days | No |
| Driver’s license suspension | Up to 1 year | 60 to 180 days |
| Community service required? | Not mandatory, but may be imposed | Yes — up to 40 hours |
| Alcohol education course required? | Yes — 12-hour DWI education program | Yes |
| Ignition interlock device required? | Sometimes — depends on circumstances | Only if required for an occupational license |
| Can you be charged without appearing drunk? | Yes — officer observations can establish impairment | Yes — any evidence of alcohol consumption |
| Do you have to be driving? | No — operation can be inferred | No — operation can be inferred |
| Will it appear on a background check? | Yes, unless sealed or expunged | Yes, unless sealed or expunged |
| Insurance rate impact | Rates may increase by ~60% or more | Rates often increase significantly for young drivers |
| Can a minor be charged with this offense? | Yes — if legally intoxicated | Yes — if under 21 and any alcohol is detected |
| Key legal risk | Criminal record, jail time, long-term consequences | Early criminal record with lifelong implications |
Key Takeaway for Drivers and Parents
- DUI and DWI are not interchangeable in Texas.
- DUI is a minor-only, zero-tolerance offense, while DWI is a criminal intoxication charge that can apply to anyone and carries substantially harsher penalties.
DUI and DWI in Texas: Frequently Asked Questions
What is the difference between DUI and DWI in Texas?
In Texas, DUI applies only to drivers under 21 and requires any detectable amount of alcohol, while DWI applies to drivers of any age who are legally intoxicated, usually defined as a BAC of 0.08% or higher or evidence of impairment.
Can you get a DUI in Texas if you’re under 21 and had only one drink?
Yes. Texas has a zero-tolerance law for underage drivers. If you are under 21 and law enforcement detects any amount of alcohol, you can be charged with DUI — even if you are not drunk.
Can a minor be charged with DWI in Texas?
Yes. A minor can be charged with DWI if they are legally intoxicated. This includes:
- A BAC of 0.08% or higher, or
- Signs of impairment such as slurred speech, poor coordination, or failed field sobriety tests
In some cases, a minor may face both DUI and DWI charges.
What BAC is required for a DWI in Texas?
A BAC of 0.08% or higher is enough to establish intoxication for a DWI charge. However, a BAC test is not required — a driver can still be charged if an officer believes they have lost the normal use of mental or physical faculties.
Is there a minimum BAC for a DUI in Texas?
No. There is no minimum BAC for a DUI charge in Texas. Any detectable amount of alcohol is sufficient if the driver is under 21.
Can you be arrested for DWI even if you don’t seem drunk?
Yes. Texas law allows officers to arrest and charge a driver with DWI based on observations alone, even without a breath or blood test. Poor driving, failed sobriety tests, or other signs of impairment may be enough.
Do you have to be driving to be charged with DUI or DWI?
No. A person does not have to be actively driving. Police may charge DUI or DWI if they can reasonably establish that the person was operating or had recently operated a motor vehicle, such as sitting in the driver’s seat with the engine running.
Which charge is more serious: DUI or DWI?
DWI is more serious. DWI is a criminal misdemeanor that can result in:
- Jail time
- Higher fines
- Longer license suspension
- Long-term criminal record
DUI is typically a Class C misdemeanor, but it can still have lifelong consequences, especially for minors.
Will a DUI or DWI conviction stay on your record in Texas?
Yes, unless it is sealed or expunged. DWI convictions typically remain on your record permanently. DUI convictions may also appear on background checks unless legal action is taken to remove them.
Should I talk to a lawyer if I’m charged with DUI or DWI in Texas?
Yes. Both DUI and DWI charges can have long-term legal, financial, and personal consequences. An experienced Texas DWI attorney can review the evidence, challenge improper stops or testing, and pursue dismissal or reduction when possible.
Have You Been Charged With DUI or DWI in Texas?
Facing a DUI or DWI charge can feel overwhelming — especially when the consequences may follow you for years.
A conviction can impact:
- Your criminal record
- Your driver’s license
- Your insurance rates
- Future employment and education opportunities
Even a first-time offense can have long-term effects, and mistakes made early in the process can be difficult to undo.
Why Legal Representation Matters in DUI and DWI Cases
DUI and DWI cases often hinge on technical details, including:
- Whether the officer had reasonable suspicion to stop you
- Whether there was probable cause for an arrest
- Whether breath or blood testing was performed correctly
- Whether field sobriety tests were administered and interpreted properly
These issues are not always obvious, but they can make the difference between conviction and dismissal.
An experienced Texas DWI attorney will review:
- The legality of the traffic stop
- The accuracy of breathalyzer or blood test results
- Police reports, dashcam, and bodycam footage
- Procedural errors that may weaken the prosecution’s case
Related: The ultimate guide to hiring a DWI or DUI lawyer in Texas
Don’t Navigate This Alone
If you or your child has been charged with DUI or DWI in Texas, our team at Michael & Associates is here to help. Speaking with an attorney early can help you understand:
- What charge applies to your situation
- What penalties you may be facing
- What defenses may be available
A case review does not obligate you to move forward — it simply gives you clarity.
Schedule a Free Case Review
If you would like to discuss your situation with a Texas DWI attorney, you can schedule a free, confidential case review.
During your consultation, we can:
- Explain the charges against you in plain language
- Identify potential issues with the evidence
- Discuss possible outcomes and next steps
Our No. 1 goal is to deliver the best possible outcome for you. Schedule a free case review today.
Sources: Michael & Associates research, Texas Penal Code, Texas Code of Criminal Procedure, Texas Alcoholic Beverage Code.
Note: This article was written by Ben Michael, Managing Partner of Michael & Associates (Texas Bar Card #24088055). It was originally published on June 7, 2024. It was updated in January 2026 and reviewed for accuracy by Texas criminal defense attorneys familiar with all types of DWI and DUI proceedings in the state.
