San Diego DUI Penalties: 2026 Updated Guide

A DUI arrest in California can create two immediate concerns. The first is the criminal charge itself, and the second is what happens to your driver's license. These issues move on separate tracks. Moreover, the deadlines can begin before the criminal case reaches its first meaningful court hearing.

For someone facing a DUI in San Diego in 2026, understanding the possible penalties is important. Equally important, an arrest is not the same as a conviction. The final sentence can depend on prior DUI-related convictions, blood alcohol concentration, and whether the driver refused a chemical test. It can also depend on whether anyone was injured, whether a child was in the vehicle, and many other facts.

California DUI laws also contain several overlapping rules. For example, a court may impose criminal penalties, while the California Department of Motor Vehicles can take separate action against a person's driving privilege. In fact, that distinction is one of the most important things to understand after an arrest.

What Is Considered a DUI in California in 2026?

California Vehicle Code Section 23152 contains several forms of DUI. For most adult drivers operating a noncommercial vehicle, it is unlawful to drive with a blood alcohol concentration, commonly called BAC, of 0.08% or higher. In addition, California law makes it unlawful to drive while under the influence of alcohol. This applies even when the prosecution is not relying solely on a 0.08% or higher BAC allegation.

This distinction matters. A person does not necessarily avoid a DUI allegation simply because a chemical test produced a result below 0.08%. Instead, prosecutors may try to show that alcohol impaired the person's ability to drive with the caution of a sober person under similar circumstances.

California law also prohibits driving under the influence of drugs and driving under the combined influence of alcohol and drugs. The substance does not have to be an illegal drug. Depending on the circumstances, prescription medications and other substances can become relevant to a DUI investigation.

What Happens to Your License Immediately After a DUI Arrest?

One of the most time-sensitive parts of a California DUI case involves the DMV's Administrative Per Se process, commonly called APS.

Suppose an adult driver takes a chemical test showing a BAC of 0.08% or higher. In that case, the DMV can begin an administrative driver's license suspension process. For a first APS offense based on a completed chemical test, the suspension is generally four months. By comparison, a second or subsequent qualifying APS offense within 10 years can result in a one-year suspension.

Refusing or failing to complete a required post-arrest chemical test can lead to more serious licensing consequences. For a driver who is 21 or older, a first refusal can result in a one-year suspension. A second refusal within 10 years can result in a two-year revocation. Meanwhile, a third or subsequent refusal can lead to a three-year revocation.

Most importantly, a driver generally has only 10 days after receiving the suspension or revocation order to request a DMV administrative hearing. As a result, missing that deadline can significantly limit the opportunity to challenge the administrative action.

The DMV process is separate from the criminal prosecution. Because they involve different proceedings and legal issues, the DMV matter and criminal case can have different outcomes.

What Are the Penalties for a First DUI in San Diego?

A first DUI without injury under Vehicle Code Section 23152 is generally a misdemeanor. California law provides a statutory base fine ranging from $390 to $1,000. However, additional assessments, fees, program expenses, and other costs can substantially increase the financial effect of a conviction.

When the court does not grant probation, the statutory jail range for a first DUI is generally 96 hours to six months. When the court grants probation, California law allows jail ranging from 48 hours to six months, depending on the sentence and circumstances.

A first DUI conviction can also involve:

• A three- to five-year period of DUI probation.
• A licensed DUI education and treatment program.
• A six-month driver's license suspension following conviction in many first-offense cases.
• A longer license suspension in certain cases involving the longer DUI program.
• Proof of financial responsibility, commonly associated with an SR-22 filing.
• Possible installation of an ignition interlock device.
• Additional court-ordered conditions based on the facts of the case.

For a first offender whose BAC is below 0.20%, the required licensed DUI program is generally at least three months. On the other hand, a first offender with a BAC of 0.20% or higher, or a qualifying chemical-test refusal, generally faces a program lasting at least nine months.

A first conviction normally produces a six-month conviction-based license suspension. When the applicable statute requires the nine-month DUI program, the conviction-based suspension can increase to 10 months. Even so, restricted driving options may still be available depending on the circumstances and DMV eligibility requirements.

Is an ignition interlock device required after a first DUI?

For a first alcohol-related DUI without injury, an IID is not automatically mandatory in every case. Instead, a court can order installation for up to six months. Eligible drivers may also choose an IID-restricted license. This can allow driving when the vehicle has the device properly installed.

An IID requires the driver to provide an alcohol-free breath sample before the vehicle starts. It can also require additional samples while the driver is operating the vehicle.

What Are the Penalties for a Second DUI Within 10 Years?

California uses a 10-year lookback period for many DUI sentencing purposes. Certain prior DUI convictions and DUI convictions involving injury can count toward that lookback. Similarly, out-of-state equivalents and qualifying "wet reckless" convictions can potentially count when deciding whether a new offense is a repeat offense.

A second DUI without injury is generally still a misdemeanor. However, the penalties become more serious.

Without probation, Vehicle Code Section 23540 provides for 90 days to one year in county jail and a statutory base fine of $390 to $1,000.

If the court grants probation, California law provides sentencing alternatives. These can include at least 10 days in jail or, under another statutory option, at least 96 hours served in specified increments. Either way, the maximum county jail exposure can reach one year.

A second DUI can also result in:

• An 18-month DUI program, or a 30-month program in qualifying circumstances.
• A two-year conviction-based driver's license suspension.
• Additional assessments and court-imposed conditions.
• Mandatory IID requirements for an alcohol-involved repeat DUI.

Under California's statewide IID program, a person convicted of an alcohol-involved second DUI without injury generally faces a one-year IID restriction period. That said, the IID system can also give eligible drivers a route to continued driving rather than simply waiting through an unrestricted suspension period.

What Are the Penalties for a Third DUI?

A third DUI within the applicable 10-year period remains a misdemeanor when it is a standard non-injury DUI under Vehicle Code Section 23152. Nevertheless, the potential consequences increase substantially.

California law generally provides for 120 days to one year in county jail and a statutory base fine of $390 to $1,000. Certain probation and treatment arrangements can affect the minimum custodial requirement. For example, California law allows a lower minimum jail period in connection with a qualifying 30-month DUI program when specific statutory requirements are met.

A third DUI can also result in a driver's license revocation and designation as a habitual traffic offender. Furthermore, an alcohol-involved third DUI can require an IID for two years under the current statewide IID program.

At this stage, prior convictions become a central sentencing issue. For this reason, someone should carefully review the dates and legal nature of earlier cases. It is a mistake to simply assume every prior alcohol-related driving case qualifies as a prior DUI.

Can a Fourth DUI Become a Felony?

Yes. California law can treat a fourth or subsequent qualifying DUI within 10 years as a "wobbler." In other words, prosecutors may charge it, and courts may punish it, as either a misdemeanor or felony depending on the circumstances and legal history.

Current California law allows incarceration that can extend as high as three years in a fourth-or-subsequent DUI case. The statutory base fine remains $390 to $1,000, and additional assessments and costs may also apply.

A fourth DUI conviction can also result in a four-year driver's license revocation. In addition, consider alcohol-involved non-injury DUI offenses with three or more prior DUI convictions within 10 years. For these, California's IID program generally requires a three-year IID period.

A prior felony DUI can further change how the court treats a new case. Therefore, anyone facing a fourth DUI or a new DUI after a felony DUI conviction should have the prior record carefully examined.

What Happens When a DUI Causes an Injury?

Courts and prosecutors treat DUI cases involving bodily injury much more seriously than standard misdemeanor DUI allegations.

A first DUI causing injury under Vehicle Code Section 23153 is a wobbler. Depending on how the case is prosecuted and sentenced, the person can face county jail or state prison. Specifically, current California law allows a sentence of up to three years in state prison for a first DUI causing injury. A statutory base fine of $390 to $1,000 can also apply.

A first injury DUI involving alcohol generally carries a one-year mandatory IID restriction under the statewide IID program.

The consequences can increase when there are prior DUI convictions. For instance, a second DUI causing injury can expose a defendant to as much as three years in state prison. By contrast, a third or subsequent DUI causing injury is a felony with potential imprisonment of up to four years.

Cases involving multiple injured victims may carry additional sentence enhancements. A person may also face restitution obligations and significant consequences outside the criminal case.

What Factors Can Increase a DUI Sentence?

The basic first, second, or third DUI penalty ranges do not always tell the complete story. In fact, California law identifies several facts that can add jail time or otherwise increase the seriousness of sentencing.

A BAC of 0.15% or higher

California Vehicle Code Section 23578 treats a BAC of 0.15% or higher as a special sentencing factor. Accordingly, a judge may consider it when deciding whether enhanced penalties or additional probation conditions are appropriate.

A first-offense BAC of 0.20% or higher has an additional practical effect. Namely, it generally triggers the longer nine-month licensed DUI program.

A child under 14 in the vehicle

A DUI conviction involving a passenger under 14 can trigger additional mandatory jail time. Depending on the number of qualifying DUI offenses, the enhancement ranges from 48 additional hours to as much as 90 additional days.

Excessive speed and reckless driving

California Vehicle Code Section 23582 creates a serious enhancement for DUI combined with reckless driving at high speed. It applies when the driver goes at least 30 mph above the applicable limit on a freeway. It also applies at least 20 mph above the limit on another street or highway. When the prosecution establishes the statutory requirements, the enhancement adds 60 consecutive days in county jail.

Chemical-test refusal

A qualifying refusal can affect both the criminal case and DMV proceedings. On the criminal side, sentencing enhancements can add jail time. Meanwhile, DMV refusal penalties can result in substantially longer license suspensions or revocations.

Prior DUI-related convictions

Prior convictions within the 10-year lookback period can change the required jail sentence, DUI program, licensing consequences, and IID period. Notably, certain wet reckless convictions can count as prior offenses for future DUI sentencing purposes. This is true even though the original case ended as reckless driving rather than DUI.

What Changed for California DUI Cases in 2026?

One important development for 2026 concerns California's statewide ignition interlock device program. Assembly Bill 366 extended the program through December 31, 2032. Without that legislation, the program would have expired at the end of 2025 as scheduled.

The extended program continues mandatory IID requirements for specified repeat DUI offenders and people convicted of injury-involved DUI offenses. Also, first-time alcohol-related offenders without injury may be able to use an IID-restricted license. Courts also keep the authority to order an IID for certain first offenders.

For people arrested in San Diego, local court procedure also matters. San Diego Superior Court refers DUI cases to its Substance Abuse Assessment Unit. This unit handles evaluation and referral to the appropriate DUI program, DUI victim impact panel, and treatment program when necessary.

Therefore, you should consider these local administrative requirements together with statewide California sentencing and DMV rules.

Why Are There Two DUI Cases After an Arrest?

People are often surprised to discover that defending a DUI can involve two separate proceedings.

The criminal case concerns whether prosecutors can prove the DUI charge. If there is a conviction, it also determines what sentence the court will impose.

The DMV proceeding concerns driving privileges. It can move forward even before the criminal case ends.

A favorable result in one proceeding does not automatically produce a favorable result in the other. For example, the DMV may set aside an administrative suspension while prosecutors continue with the criminal case. Likewise, developments in criminal court do not automatically cancel an existing administrative license action.

This is why the 10-day DMV hearing deadline deserves immediate attention after an arrest.

Does a DUI Arrest Automatically Mean These Penalties Will Apply?

No. Penalty ranges become relevant only after a conviction. In addition, every DUI case must be evaluated on its own evidence.

Depending on the facts, legal issues may involve the reason for the traffic stop and whether the prosecution can prove the defendant was actually driving. They may also include the reliability and timing of chemical testing, testing procedures, body-camera evidence, and witness testimony. Finally, they may cover the accuracy of the alleged BAC and whether law enforcement complied with applicable legal requirements.

Field sobriety testing can also require careful review. Law enforcement uses these exercises as observations. However, physical conditions, footwear, road conditions, instructions, fatigue, medical issues, and other circumstances may affect how officers interpret them.

A defense attorney can evaluate what evidence the prosecution actually has. That way, the arrest report does not become the final word on what happened.

Why Acting Quickly After a San Diego DUI Arrest Matters

A DUI case can become stressful very quickly. At the same time, a person may be dealing with a temporary license, a DMV deadline, and an upcoming criminal arraignment. They may also face employment concerns, transportation problems, and uncertainty about possible penalties.

Some decisions also need to happen early. Waiting until the first court appearance can mean that an important DMV deadline has already passed.

Anyone facing a DUI should keep the paperwork they received during the arrest, including the temporary license and suspension notice. Also, avoid assuming that the listed court date is the only deadline that matters.

The exact consequences of a DUI depend on the charge, prior record, BAC allegations, and refusal issues. They also depend on injuries, sentencing decisions, and DMV status. California DUI laws are detailed, and seemingly small factual differences can have major consequences. For that reason, general information cannot replace legal advice about a specific case.

How we can help

At Flores Legal Allies, attorney Andrew Flores represents people facing criminal charges in San Diego and Los Angeles. A DUI case can bring immediate concerns about driving privileges, employment, family responsibilities, and court appearances. It can also raise the possibility of jail or other penalties. Our approach is to listen carefully to those concerns and become an ally throughout the legal process.

We work to bring clarity and calm to a situation that can otherwise feel overwhelming. First, we seek to understand what actually happened and review the prosecution's evidence. Next, we identify important deadlines and examine the DMV and criminal sides of the case. Finally, we explain the available options in understandable terms.

Perhaps you or someone close to you has been arrested for DUI. If so, speaking with a criminal defense attorney promptly can help protect important rights. It can also ensure that someone addresses time-sensitive issues, including the DMV hearing deadline. Flores Legal Allies can review the circumstances of the arrest and explain the potential 2026 DUI penalties that apply to the specific case. Together, we can then work on a defense strategy designed around your situation and concerns.