An underage DUI charge in California is one of the most stressful situations a young person — and their family — can face. The laws that apply to drivers under 21 are significantly stricter than those that govern adult DUI cases, and the consequences extend far beyond a fine or a license suspension. A conviction can derail a young person’s education, career, and future in ways that last long after the legal case is closed. Understanding exactly what underage DUI means under California law, what penalties apply, and what defenses are available is the first step toward protecting your child’s future.
This guide covers everything families in Bakersfield and throughout Kern County need to know about underage DUI charges in California.
What Do Underage DUI Drivers Face in California?
California enforces a zero-tolerance policy for underage drinking and driving. While the legal blood alcohol concentration (BAC) limit for adult drivers is 0.08%, drivers under 21 can face DUI charges under multiple statutes at far lower BAC levels. California has essentially three separate legal standards that apply to underage drivers:
Vehicle Code 23136 – The Zero-Tolerance Law
Under California Vehicle Code 23136, it is unlawful for a person under 21 to drive with a BAC of 0.01% or higher. This is the zero-tolerance standard — a single drink consumed before driving is enough to trigger a violation. VC 23136 is an administrative offense rather than a criminal charge, meaning it results in a license suspension handled through the DMV rather than a criminal prosecution. However, the driver’s license consequences are real and can be significant.
Vehicle Code 23140 – Underage DUI
California Vehicle Code 23140 applies when an underage driver has a BAC of 0.05% to 0.07% — above the zero-tolerance threshold but below the general adult limit of 0.08%. This is an infraction, not a misdemeanor, but it carries license suspension, mandatory completion of an alcohol education program, and a fine. It also creates a record that can affect insurance rates and future driving privileges.
Vehicle Code 23152 – Standard DUI
When an underage driver has a BAC of 0.08% or higher, they face the same DUI charges as adult drivers under Vehicle Code 23152. This is a criminal misdemeanor for a first offense, with all the criminal penalties that follow — including the possibility of jail time, significant fines, probation, and a criminal record. Courts and prosecutors do not treat the defendant’s age as a reason to go easy; in fact, some take an especially firm stance on young DUI offenders.
What Are the Penalties Associated with Underage DUI in California?
The penalties for an underage DUI vary depending on which statute applies and whether this is a first or subsequent offense:
Under VC 23136 (BAC 0.01% or higher)
- 1-year suspension of driving privilege for a first offense
- 2-year suspension for a second offense within 10 years
- 3-year suspension for a third or subsequent offense within 10 years
- No criminal record — this is handled administratively by the DMV
Under VC 23140 (BAC 0.05% to 0.07%)
- 1-year license suspension
- Fine of up to $100 plus substantial penalty assessments that significantly increase the total
- Mandatory completion of a licensed alcohol education program
- No jail time for a first offense, but the infraction appears on the driving record
Under VC 23152 (BAC 0.08% or higher — treated as adult DUI)
- Up to 6 months in county jail for a first offense
- Fines ranging from $390 to $1,000 plus penalty assessments that can bring the total to $2,000 or more
- 3 to 5 years of informal probation
- Mandatory DUI school (3 months for a first offense)
- 6-month driver’s license suspension through the DMV
- Installation of an ignition interlock device (IID) may be required
- A permanent misdemeanor criminal record
Enhanced Penalties
Certain circumstances trigger enhanced penalties regardless of which statute applies. If the underage driver had a passenger under 14 in the vehicle, caused injury to another person, had a BAC significantly above the applicable threshold, or was driving at an excessive speed, prosecutors may seek harsher sentences or even felony charges. A prior DUI conviction — even from before the age of 21 — also elevates penalties substantially.
What If You Refuse to Submit to a Breath or Chemical Test in California?
California has an implied consent law, which means that any person who drives on California roads is deemed to have consented to a chemical test — breath or blood — if lawfully arrested on suspicion of DUI. For underage drivers, this applies with equal force, and the consequences of refusing are severe.
Under California Vehicle Code 23612, if an underage driver refuses to submit to a chemical test after a lawful DUI arrest:
- Their driver’s license is automatically suspended for 1 year for a first offense — longer than the suspension for actually testing above the legal limit.
- The refusal itself is admissible in court and can be used against the defendant as consciousness of guilt evidence.
- If the driver is ultimately convicted of DUI, the refusal results in additional mandatory jail time — 48 hours for a first DUI with refusal.
- The refusal also makes it more difficult to negotiate a favorable plea agreement, as prosecutors view it as an aggravating factor.
It is worth noting that the pre-arrest Preliminary Alcohol Screening (PAS) test — the handheld breathalyzer offered at the roadside before any arrest — is treated differently for underage drivers. Unlike adults, who may refuse the PAS test without implied consent consequences, drivers under 21 are required by VC 23136 to submit to a PAS test if requested by law enforcement. Refusing a PAS test as an underage driver triggers the same DMV suspension consequences as refusing a post-arrest chemical test.
Best Defenses Against an Underage DUI Charge
Being charged with underage DUI does not mean a conviction is inevitable. California DUI law is complex, and skilled defense attorneys find viable defenses in many cases that initially appear straightforward. Common defense strategies include:
Challenging the Traffic Stop
Law enforcement must have a lawful reason — reasonable suspicion of a traffic violation or other criminal activity — to stop a vehicle. If the initial stop was not legally justified, any evidence gathered as a result may be suppressed. This can include the BAC results themselves, which makes the prosecution’s case much more difficult.
Challenging the Accuracy of the BAC Test
Breathalyzer devices must be properly calibrated, maintained, and operated according to strict protocols. Any deviation from required procedures can compromise the reliability of the result. The defense can request calibration records, maintenance logs, and operator certification documentation to identify flaws in the testing process.
Rising Blood Alcohol Defense
Because the body continues absorbing alcohol for 30–90 minutes after the last drink, a driver’s BAC can actually be lower at the time of driving than at the time of testing — which occurs after the stop, field sobriety tests, and booking process. If the time gap between driving and testing was significant, the rising BAC defense may be applicable.
Medical Conditions and Environmental Factors
Certain medical conditions — including GERD, acid reflux, and diabetes — can affect breath test results. Environmental factors, including the presence of chemicals in the breath or mouth from certain foods, medications, or occupational exposure, can also produce elevated or misleading breathalyzer readings.
Lack of Probable Cause for Arrest
Even if the traffic stop was lawful, the officer must have probable cause to believe the driver was impaired before making a DUI arrest. If field sobriety test results were ambiguous, if the officer’s observations were inconsistent, or if the arrest was made without adequate cause, the defense can challenge the validity of the arrest itself.
Conclusion
An underage DUI charge is serious, but it does not have to define your child’s future. California law is complex, the science behind DUI testing is challengeable, and experienced defense attorneys find viable paths through these cases regularly. The key is acting quickly, understanding the full range of consequences at stake, and having skilled legal representation fighting for the best possible outcome.
At the Law Office of the Bakersfield Defense Attorney, we have helped young people and their families navigate the California DUI system and come out the other side with their futures intact. If your child has been charged with underage DUI in Bakersfield or Kern County, contact us today for a confidential consultation. The right defense starts with the right attorney — and we are here to help.
Frequently Asked Questions
Will an underage DUI stay on my child’s record permanently?
A misdemeanor DUI conviction under VC 23152 creates a permanent criminal record unless the conviction is later expunged. California Penal Code 1203.4 allows for expungement of misdemeanor convictions after successful completion of probation, but the DUI still appears on the DMV record for 10 years and may be considered in future DUI prosecutions. Infractions under VC 23140 do not create a criminal record but do appear on the driving record.
Can an underage DUI be reduced to a lesser charge?
Yes — in many cases, skilled negotiation by a defense attorney results in a reduction of an underage DUI charge to a lesser offense such as a wet reckless (VC 23103.5) or a dry reckless (VC 23103). These reductions carry fewer penalties and less stigma than a DUI conviction and may be available depending on the strength of the prosecution’s evidence.
Will my child lose their scholarship or be expelled from college?
It depends on the institution and the scholarship terms. Many colleges require students to report criminal charges and convictions, and a DUI conviction can trigger disciplinary proceedings. Scholarships with conduct requirements may be revoked. These collateral consequences are another reason why fighting the charge aggressively — and seeking reductions or dismissals — matters so much for young defendants.
