Driving under the influence is dangerous at any age, but when it comes to underage drivers, Texas enforces a strict Zero Tolerance Law. This law ensures that minors who have any detectable amount of alcohol in their system while operating a motor vehicle face serious legal consequences. If you or a loved one has been charged with underage drinking and driving, you need to understand how Texas law applies and what your legal options are.
What Is the Zero Tolerance Law in Texas?

Texas is a zero-tolerance state, meaning that any young driver under 21 caught with a detectable amount of alcohol in their system can be charged with a DUI or DWI charge, even if their blood alcohol concentration (BAC) is below the legal limit for adults. Unlike drivers over 21, who are considered legally intoxicated at a BAC of 0.08%, underage drivers can face penalties even with the smallest presence of alcohol.
This law is designed to prevent underage drinking and driving by imposing strict penalties on young offenders and discouraging risky behavior on the road.
Zero Tolerance Law vs. Standard DWI Laws

While the Texas Zero Tolerance Law applies to underage drivers, regular DWI charges still apply if an underage driver meets the legal limit of 0.08% BAC or exhibits physical or mental capacity impairment.
The key differences between DUI and DWI charges for minors include:
- DUI (Driving Under the Influence)
Charged when an underage driver has any detectable alcohol in their system. This is a Class C misdemeanor. - DWI (Driving While Intoxicated)
Charged when an underage driver has a BAC of 0.08% or higher or if their mental or physical capacity is impaired. This carries much steeper penalties.
Penalties for Underage Drinking and Driving in Texas

Texas enforces strict penalties for underage drinking and driving to deter young drivers from getting behind the wheel after consuming alcohol. The severity of the penalties depends on the number of offenses and whether the driver’s blood alcohol concentration (BAC) exceeded legal limits.
First Offense DUI (Zero Tolerance Violation)
A first offense for an underage driver with a detectable amount of alcohol in their system may result in:
- License suspension: Up to 60 days
- Alcohol awareness course: Mandatory attendance at an alcohol education program
- Community service: 20 to 40 hours of community service
- Fines: Up to $500
- Criminal record: Can appear on background checks if not handled properly
Second Offense DUI
A second offense carries harsher consequences, including:
- License suspension: Up to 120 days
- Higher community service requirements: 40 to 60 hours of community service
- Increased fines: Up to $500
- Mandatory alcohol awareness classes
Third Offense DUI
A third offense escalates to more severe penalties, including:
- License suspension: Up to 180 days
- Alcohol awareness course: Required again
- Community service: 40 to 60 hours
- Higher fines: Up to $500
- Potential criminal charges
DWI Convictions for Underage Drivers
If an underage driver’s blood test confirms a BAC of 0.08% or higher, they can face standard DWI penalties, which include:
- Automatic driver's license suspension
- Up to 180 days in jail
- Fines up to $2,000
- Higher penalties for aggravating circumstances present
For subsequent offenses, the penalties increase significantly, with potential felony charges for repeat violations.
Implied Consent Laws for Underage Drivers
Under Texas’ implied consent laws, any driver operating a motor vehicle automatically consents to chemical testing (blood or breath tests) if a law enforcement officer believes they are intoxicated. If a driver fails or refuses a blood test, they face an automatic driver's license suspension, even if they are later found not guilty of DWI.
License suspensions for refusing a field sobriety test or chemical testing include:
- First Refusal
180-day suspension - Second Refusal
Within a 10-year period after the first refusal, 2-year suspension
Refusing a blood test does not guarantee a driver won’t face DWI charges, as other evidence, such as probable cause from the officer’s observations, can still be used in court.
How a DWI Conviction Affects a Minor’s Future
Many young adults don’t realize that even a first offense under the Zero Tolerance Law can have long-term consequences beyond the initial penalties.
- Criminal Record
A DUI or DWI conviction can remain on a minor’s record and impact their future job prospects. - Higher Insurance Rates
A conviction leads to skyrocketing car insurance premiums. - Educational Consequences
Colleges and universities may revoke scholarships or deny admission. - Career Limitations
Certain employers won’t hire applicants with a DUI or DWI record.
For non-citizens, these offenses could also impact their Texas resident status and immigration prospects.
Legal Defenses Against Underage DUI or DWI Charges
Our experienced criminal defense attorneys can help underage drivers fight DUI or DWI charges using a variety of legal strategies.
Common defenses include:
- Lack of Probable Cause
If an officer pulled over the driver without justification, the case may be dismissed. - Faulty Field Sobriety Tests
These tests are often unreliable, and an attorney may challenge the results. - Inaccurate BAC Readings
Issues with chemical testing or improperly calibrated breathalyzers can lead to incorrect BAC results. - No Detectable Alcohol
A blood test may not have been properly administered, making the results invalid.
Don’t Take This Lying Down — We Can Fight DWI Charges
A DUI or DWI conviction under Texas' Zero Tolerance Law can have serious, long-lasting consequences, from license suspension and fines to a criminal record that affects future opportunities. If you or your child has been charged with underage drinking and driving, the right legal defense can make all the difference.
At Turnbull Legal Group, we understand the challenges young drivers face when navigating the Texas legal system. Our experienced attorneys are ready to fight for your rights, challenge the evidence, and work toward the best possible outcome. Don’t let one mistake define your future — contact us to take control of your case today.
Don’t Let This Ruin Your Future — Call Us
Don’t face these charges alone. Call Turnbull Legal Group for a free consultation and start building a strong defense.

