Underage DUI Defense Lawyers in Los Angeles County

California holds underage drivers to one of the strictest standards in the country. If you are under 21 and found operating a vehicle with any measurable amount of alcohol in your system, you can be charged with a DUI regardless of whether you felt impaired.

An underage DUI in Los Angeles is a criminal charge with real consequences: license suspension, fines, mandatory education programs, and consequences that can affect future educational, employment, and personal opportunities.

At the DUI Defense Group, we focus exclusively on DUI and driving-related defense throughout Los Angeles County and surrounding areas in Southern California. We understand how these cases are built and exactly how to challenge them.

What Is California’s Zero Tolerance Law?

California’s zero tolerance law makes it illegal for any person under the age of 21 to operate a motor vehicle with a blood alcohol level of 0.01% or higher. Because the threshold is extremely low, even a small amount of alcohol consumption may be enough to trigger a violation. Unlike the standard 0.08% BAC limit that applies to adult drivers, zero tolerance leaves almost no margin.

A law enforcement officer may require an underage driver to submit to a preliminary alcohol screening (PAS) test, which is a roadside breath test, if there is reasonable suspicion of alcohol use while driving.

The PAS is considered a voluntary test for adult drivers over 21, but for drivers under 21, submitting to it is required by law.

Automatic License Suspension

A zero tolerance violation can trigger an administrative suspension of your driver’s license. This action is handled separately by the DMV and follows a process independent of any criminal proceedings.

You have only 10 days from the date of your arrest to request a DMV hearing to challenge the suspension. Missing that deadline may result in the suspension taking effect automatically.

Learn more about challenging license suspension issues on our DMV Hearing Defense page. Our team handles both the criminal and DMV sides of underage DUI cases to help protect your driving privileges and your future.

What Are the Penalties for an Underage DUI in California?

The penalties for an underage DUI depend on your blood alcohol level at the time of the stop and whether any injuries or prior offenses are involved. Here is a breakdown by BAC range:

BAC 0.01% to 0.04% — Zero Tolerance Violation

A blood alcohol level in this range violates California’s zero tolerance law.

Penalties can include a one-year driver’s license suspension and additional consequences depending on the circumstances of the case.

Refusing a required chemical test may also lead to separate DMV penalties. No jail time is typically imposed at this level, but the administrative consequences are immediate and automatic.

BAC 0.05% to 0.07% — Underage DUI

A BAC in this range is charged under California’s underage DUI statute.

Penalties include a one-year license suspension, a 30-day drug and alcohol education requirement, and fines of up to $300. While this differs from a standard adult DUI charge, the consequences can still affect driving privileges and create lasting legal concerns if not properly addressed.

BAC 0.08% or Higher — Standard DUI

Once the blood alcohol level reaches 0.08%, the charge becomes a standard DUI under California Vehicle Code section 23152.

The penalties are significantly more severe: three to five years of probation, a minimum of 96 hours in county jail, fines of up to $1,000, and mandatory DUI education.

If this is not a first offense, the consequences can become more severe. Learn more about escalating penalties and repeat DUI consequences on our Second Offense DUI page.

DUI Causing Injury

An underage DUI that results in injury to another person is treated as a standard DUI causing injury. Penalties vary depending on the specific charges, injuries involved, and prior record. In serious situations, misdemeanor or felony consequences may apply.

The Broader Consequences of an Underage DUI

The criminal penalties are only part of the picture. An underage DUI conviction in Los Angeles can affect a young person’s life in ways that extend well beyond the courtroom.

Colleges and universities routinely ask about criminal convictions on applications. Employers particularly in licensed professions, government, and finance conduct background checks where a DUI will appear. Landlords use them too. And, if the underage driver holds or is pursuing a commercial driver’s license, an underage DUI may create significant consequences under commercial driver’s license regulations and could affect future commercial driving opportunities.

Learn more on our CDL DUI page. Protecting your ability to drive is equally critical. A suspended license disrupts school attendance, work schedules, and family obligations. In some cases, a restricted license can be obtained to allow limited driving but that option depends on acting quickly and correctly from the moment of arrest.

If you are beginning to understand what is at stake, now is the time to act. Call 866-876-6859 to speak with a Los Angeles DUI defense attorney about your options.

How Do You Defend Against an Underage DUI Charge?

Being charged is not the same as being convicted. Underage DUI cases are often defensible, particularly because the evidence of impairment is limited, the testing equipment can be unreliable, and law enforcement must follow specific legal procedures to make a lawful stop and arrest.

A skilled DUI defense attorney will attack the legality of the stop and the reliability of the evidence at every stage of the case.

Challenging the Legality of the Traffic Stop

Every DUI investigation begins with a traffic stop. To stop a vehicle lawfully, a law enforcement officer must have reasonable suspicion that a traffic violation or crime has occurred.

If that threshold was not met, everything that followed, including any breath test results, can be challenged through a suppression motion. A successful motion to suppress can result in the dismissal of all charges based on that evidence.

Attacking the Preliminary Alcohol Screening Test

The PAS device used roadside is subject to strict calibration requirements and operator training standards. If the testing equipment was not properly maintained, or if the officer did not follow the required protocol, the results may be inadmissible.

We routinely request maintenance and calibration logs for chemical testing devices as a standard part of our case investigation.

Rising Blood Alcohol Defense

Alcohol continues to be absorbed into the bloodstream for some time after a person stops drinking. A blood alcohol level that reads at or above the legal limit at the time of testing may have been lower when the vehicle was actually being operated. This rising blood alcohol defense can be a powerful argument depending on the timing of the stop and the test.

Additional Defense Strategies

Depending on the facts of your case, our team may also pursue:

• The breath test detected alcohol from a non-beverage source such as mouthwash, cough syrup, or a medical condition like GERD

• You were not the driver of the vehicle at the time of the stop

• The BAC result fell within the margin of error for the testing device

• Law enforcement made a procedural error during the arrest or testing process

• A medical condition or low-carb, high-protein diet affected the accuracy of the test results

• The officer’s observations of impairment were inconsistent with the chemical test results

Field sobriety testing can play a major role in DUI investigations, but these tests are not always as reliable as many people assume. Learn more about common testing issues and defense strategies on our Beating Field Sobriety Tests page.

Your Los Angeles Underage DUI Defense Team

DUI Defense Group combines prosecutorial, judicial, and scientific experience to defend DUI cases throughout Southern California. Lead attorney Rob Samudrala, former DUI judge Robert Granieri, and court-recognized expert Dewayne Beckner bring experience from multiple sides of the legal process and understand how DUI cases are evaluated from different perspectives.

Underage DUI cases can involve issues that extend beyond the courtroom, including effects on education, future opportunities, and driving privileges. Our team works to address both the immediate case and the broader consequences that may follow.

Speak With an Underage DUI Attorney in Los Angeles Today

An underage DUI charge does not have to define a young person’s future. With the right defense strategy, many clients may be able to reduce or resolve charges while helping protect their record and driving privileges. The earlier you act, the more options we have available to us.

The DUI Defense Group handles underage DUI cases throughout Los Angeles County and surrounding areas in Southern California. Call 866-876-6859 today for a free consultation. We will walk you through your options, explain the process clearly, and fight for the best possible outcome in your case.