Getting arrested for driving under the influence is serious at any age, but California law treats underage DUI offenses especially harshly. Because the legal drinking age is 21, drivers under that age face unique rules and penalties that can impact their license, finances, and future opportunities. Understanding what’s at stake is an important first step after an arrest.



At Law Office of Robert Little, we can provide legal assistance to the Rancho Cucamonga public and help individuals understand their options after an underage DUI charge.

California’s Zero Tolerance Law for Underage Drivers

California has a strict “zero tolerance” policy for drivers under 21. This means it is illegal to drive with a blood alcohol concentration (BAC) of 0.01% or higher. Even a very small amount of alcohol can trigger penalties, regardless of whether the driver appears impaired.

A violation under the zero tolerance law is typically charged as an administrative offense, but the consequences can still be significant.

DUI Charges Beyond Zero Tolerance

Underage drivers can face more serious charges depending on their BAC level:

• BAC of 0.05% or higher: This may result in additional penalties, including required DUI education programs.
• BAC of 0.08% or higher: This can lead to a standard DUI charge, similar to what drivers over 21 face.
• Driving while impaired by drugs: Prescription drugs, marijuana, and illegal substances can also lead to DUI charges, regardless of age.

These charges can result in criminal penalties, not just administrative ones.

License Suspension and DMV Consequences

One of the most immediate consequences of an underage DUI is the loss of driving privileges. Depending on the circumstances, penalties may include:

• A one-year driver’s license suspension for a zero tolerance violation
• Longer suspensions for higher BAC levels or repeat offenses
• Restrictions on obtaining a license if the driver is not yet licensed

In many cases, drivers have only a short window to request a DMV hearing to challenge the suspension.

Criminal Penalties for Underage DUI

If an underage driver is convicted of a DUI with a higher BAC or impairment, criminal penalties may apply, such as:

• Fines and court fees
• Mandatory DUI education programs
• Probation
• Community service or custody time in serious cases

A conviction can also create a criminal record, which may affect education, employment, and housing opportunities.

Long-Term Consequences for Young Drivers

An underage DUI can follow a person long after the case is resolved. Possible long-term effects include:

• Increased insurance rates
• Difficulty obtaining scholarships or financial aid
• Challenges with background checks
• Added penalties for future driving offenses

Because underage drivers are still building their future, these consequences can be especially disruptive.

Why Legal Guidance Matters

Underage DUI cases often involve both the criminal court system and the DMV, making them more complex than they initially appear. Deadlines, procedural rules, and evidence issues can all affect the outcome. Having legal guidance can help ensure rights are protected and options are clearly understood.

At Law Office of Robert Little, we can provide legal assistance to the Rancho Cucamonga public and help individuals navigate the legal process after an underage DUI arrest.