What Are the Penalties for a Second DUI in Los Angeles?

A second DUI within 10 years in Los Angeles County is usually charged as a misdemeanor, but the penalties are significantly more severe than for a first offense. In many cases, this includes probation, mandatory custody, an 18-month DUI program, the possibility of a suspended driver’s license, and installation of an ignition interlock device (IID). 

Additional driver’s license consequences are handled separately through the DMV and can vary depending on the specific circumstances of the case, including whether chemical testing was completed or refused.

Key Takeaways

• A second DUI in Los Angeles within 10 years of a first conviction is typically still classified as a misdemeanor offense.
• It carries a mandatory minimum of 96 hours (4 days) to 1 year in county jail, though this can sometimes be served through alternative sentencing.
• The costs of a second DUI can quickly add up to $10,000 or more.

What Happens after a Second DUI in Los Angeles?

Second offenses are typically charged as misdemeanors but carry much harsher penalties than first offenses. 

Under California Vehicle Code §§ 23152 and 23540, along with related sentencing provisions, penalties usually include 3 to 5 years of probation, 96 hours to 1 year in county jail, fines totaling $2,000 to $3,000, an 18-month SB 38 multiple offender DUI school program, and a 1-year driver’s license suspension (which could be increased to 2 years under the state's Implied Consent law if you refused chemical testing). Installation of an ignition interlock device (IID) is also required in most cases.

Every year, tens of thousands of people in Los Angeles County are arrested for DUI, with neighboring Orange County adding roughly 10,000 to that yearly total.  While a second offense is more serious, it’s a situation many people face, and the outcome depends heavily on the specific facts of the case.

The DMV data suggests that roughly two-thirds of DUI arrests in California ultimately lead to a conviction. Don’t let your case become one of those. Set up a free consultation with an experienced DUI defense attorney who can make a significant difference in how your case is resolved.

When Is It Considered a “Second DUI”?

A second DUI is treated very differently from a first.

If you’ve been arrested again within 10 years of a prior DUI conviction, the court will consider it a repeat offense, and the penalties increase significantly.

Let’s break down exactly what you’re facing.

A DUI is considered a “second offense” in California if:

• You have one prior DUI conviction, and
• The new offense occurred within 10 years of that prior offense

This 10-year “lookback” period is generally measured from offense date to offense date.

Prior convictions from other states may count if they are substantially similar to a California DUI offense.

Related: Penalties for a DUI in Los Angeles County

A second DUI carries mandatory custody exposure. Under California law, the full statutory range can extend up to one year in county jail.

In practice, when probation is granted, many second-offense cases involve a minimum of 96 hours (4 days) in custody, though courts may allow qualifying alternatives such as work release, electronic monitoring, or community labor in appropriate cases.

Fines and Court Costs

The base fine for a second DUI is approximately $390 to $1,000

However, with penalty assessments and court fees, most people pay a total of $2,000 to $3,000 in fees, fines, and court costs.

This does not include:

• DUI school costs
• IID installation fees
• Insurance increases

In all, the total cost of a second DUI can quickly add up to $10,000 or more.

DUI School Requirements

While a first DUI typically requires completing a 3-month DUI school curriculum, completing the program after a second offense is significantly more time-consuming (and expensive). For a second DUI, the court typically orders:

The cost will vary by program and length, but expect it to range between $1,100 and $2,500.

Attendance in the required DUI program is mandatory. The program must be state-licensed and court-approved, and completion must be verified and reported to the court.

However, a limited number of hybrid programs are available to make regular attendance easier. Just make sure that any hybrid program is approved by the court.

License Suspension for a Second DUI

Driver’s license consequences vary depending on the case.

A second DUI can lead to an administrative (APS) suspension by the DMV and separate conviction-based licensing consequences that follow a court conviction.

Just like first-time DUI offenders, second-time offenders face a 10-day deadline to request an Administrative Per Se (APS) hearing to contest the automatic license suspension. If you fail to request this hearing by the deadline, you lose the right to a hearing, and, in many second DUI cases, the DMV imposes a 1-year suspension if a chemical test was completed and failed.

If you refuse testing, the consequence can be a 2-year revocation.

That administrative suspension is separate from any additional license consequences that may follow a conviction.

According to data from the California DMV, 15% of license suspensions were set aside (dropped) as an outcome of APS hearings in 2024. This shows that there IS a chance of winning the hearing, particularly if you have experienced legal representation.

Additionally, the APS hearing provides a valuable opportunity to gain information on the case the prosecution plans to present against you in court. Based on that information, we can develop strategies to build a stronger defense for the criminal charge.

DMV Suspension

A second DUI in California triggers two separate license actions:

• A DMV administrative suspension (APS)
  
• Any additional consequences imposed after a conviction

In most cases:

• If you took a chemical test and it showed a BAC of 0.08% or higher, the APS suspension is typically 1 year
• If you refused or failed to complete testing, the APS consequence can be a 2-year revocation

Many drivers may still qualify for restricted driving privileges, often with an ignition interlock device (IID)

Because the DMV process is separate from the criminal case, the outcome in one does not automatically control the other.

Ignition Interlock Device (IID) Requirement

For a second DUI, installation of an IID is usually mandatory. This device:

• Requires a breath test before starting the vehicle
• Must be installed for 1 year in most cases
• Is monitored and reported to the court and DMV

You will have to pay IID installation and monthly rental costs. Costs can exceed $1,000 over the required period.

Probation for a Second DUI

In most second DUI cases, the court will place you on 3 to 5 years of informal probation.

That means you won’t report to a probation officer every month, but you will be under court supervision — and the judge expects strict compliance.

Typical probation terms usually include:

• Not driving with a measurable amount of alcohol in your system (often a 0.01 BAC probation condition)
• Submitting to chemical testing if you’re arrested again
• Avoiding any new criminal offenses
• Completing the required DUI education program
• Installing and maintaining an ignition interlock device (if ordered)

Probation might sound manageable (and often it is), but it’s important to take it seriously. A violation can land you back in court and potentially back in jail.

What Makes a Second DUI More Serious?

A second DUI is already treated more harshly than a first offense. But certain factors can make the situation significantly worse.

Penalties often increase if:

• Your blood alcohol concentration (BAC) was 0.15% or higher (as established by Vehicle Code §23542)
• There was an accident involved
• A child under 14 was in the vehicle (which triggers a sentencing enhancement under California Vehicle Code §23572)
• You refused a breath or blood test
• Someone was injured
• You have more than one prior DUI

If someone was injured, the case can be filed as a felony instead of a misdemeanor, which dramatically raises the stakes.

The details matter. Small differences in the facts can make a big difference in the outcome.

Second DUI vs First DUI in LA

The biggest differences are jail time and the length of the DUI program.

How Much Does a Second DUI Cost?

When everything is added up, a second DUI often costs:

• $2,000 to $3,000 in fines
• $1,000+ for IID installation and monthly fees
• $1,000 to $2,500 for DUI school
• Thousands in car insurance premiums for several years

Many people end up paying $10,000–$15,000+ over time.

Related: What is SR-22 insurance?

Can a Second DUI Charge Be Reduced?

It's possible, depending on the evidence. In some cases, defenses may involve:

• Challenging the traffic stop
• Breath machine calibration issues
• Blood sample contamination
• Rising blood alcohol arguments
• Procedural errors

While second DUIs are harder to negotiate than first offenses, reductions or alternative resolutions are sometimes possible. This is where information gained during the APS hearing can make a real difference.

Is Jail Mandatory for a Second DUI in California?

Yes. Officially, some jail time is mandatory. However, depending on the court and circumstances, alternatives may be available, including:

• Work release
• House arrest
• Electronic monitoring

What Should You Do After a Second DUI Arrest?

If this is your second DUI:

• Request your DMV hearing within 10 days.
• Avoid discussing the case publicly.
• Begin reviewing prior conviction details.
• Consult a DUI defense lawyer as early as possible.

The prior conviction changes everything about the case strategy.

Bottom Line

A second DUI in Los Angeles is significantly more serious than a first offense.

You are likely facing:

• Mandatory jail time
• 18 months of DUI school
• A 1-year license suspension (or 2 years if you refused chemical testing)
• IID requirement
• 3–5 years probation

But every case depends on the evidence and how early it’s addressed.

The earlier the defense strategy begins, the more options you may have.

Frequently Asked Questions: Second DUI in Los Angeles

Is jail mandatory for a second DUI in Los Angeles?

Yes. In most cases, courts require at least 96 hours (4 days) of custody or qualifying alternatives.

In some cases, judges may allow alternatives like work release or electronic monitoring, but some form of custody is typically required.

How long is your license suspended for a second DUI in California?

A second DUI typically results in a 1-year DMV suspension if a chemical test was completed and failed. If the driver refuses to take a test, the suspension can be 2 years.

However, many drivers may qualify for restricted driving privileges with an ignition interlock device (IID).

Do I have to install an ignition interlock device for a second DUI?

In most Los Angeles cases, yes. IID installation is typically required to continue driving legally after a second DUI. The device requires a breath test before the vehicle can start.

How much does a second DUI cost in Los Angeles?

Most second DUI cases cost between $10,000 and $15,000+ over time. This includes:

• Court fines ($2,000–$3,000 with assessments)
• DUI school fees
• IID installation and maintenance
• Increased insurance premiums

Insurance increases are often the largest long-term expense.

How long is DUI school for a second offense?

A second DUI usually requires completion of the SB 38 program, which lasts 18 months. In some cases, courts may order up to 30 months.

Can a second DUI be reduced to a lesser charge?

It depends on the evidence. While second DUIs are more difficult to negotiate than first offenses, reductions may be possible if there are weaknesses in:

• The traffic stop
• Breath or blood testing
• Field sobriety testing
• Police procedures

Each case depends on specific facts.

Is a second DUI automatically a felony in California?

No. A second DUI within 10 years is usually charged as a misdemeanor. However, it can become a felony if:

• Someone was injured
• You have three or more prior DUIs
• You have certain prior felony DUI convictions

What happens if I refuse the breath or blood test on a second DUI?

Under California’s implied consent law (Vehicle Code §23612), drivers who are lawfully arrested for DUI are required to submit to a chemical breath or blood test.

While a driver can refuse testing, doing so carries additional legal consequences. These may include:

• A longer driver’s license suspension
• Additional penalties if you are convicted of DUI
• Limited eligibility for restricted driving privileges

Because alcohol levels change over time, California lawmakers impose harsher penalties for refusal in order to discourage drivers from delaying chemical testing.

How far back does California look for prior DUIs?

A DUI is considered a “second offense” in California if:

• You have one prior DUI conviction, and
• The new offense occurred within 10 years of that prior offense.

This 10-year period is generally measured from offense date to offense date.

Prior convictions from other states may count if they are substantially similar to a California DUI offense.

Can I get probation instead of jail for a second DUI?

You will almost always receive probation (3–5 years), but probation does not eliminate the mandatory minimum jail time. It may, however, allow alternatives like work release.

What to Do Next After a Second DUI Arrest

A second DUI can feel overwhelming, but it’s one that thousands of Los Angeles County residents go through each year. 

What happens next will depend on:

• The evidence in your case
• Your prior record
• How early the situation is addressed

There are also imminent decisions, including the deadline for the DMV hearing request, that can affect your ability to drive.

The most important step is to understand your specific situation as early as possible, before critical deadlines pass or assumptions are made about the outcome.

Getting accurate information early can help you:

• Understand what penalties actually apply
• Identify potential defenses or issues in the case
• Make informed decisions about how to move forward

Set Up a Free Case Review

If you want to understand where you stand, contact Michael & Associates' team of experienced Los Angeles DUI lawyers for a free, confidential case review.

• No obligation
• Focused on your specific facts
• Designed to help you understand your options

Contact us today to schedule a free case review.

Now isn't the time to panic. Clarify your situation and next steps today.

 

About Michael & Associates

Michael & Associates is a criminal defense law firm that represents clients in all types of misdemeanor and felony cases in Los Angeles, including DUI, drug DUI, marijuana DUI, drug charges, assault and domestic violence, theft, and shoplifting. 

Sources: Michael & Associates research, California Vehicle Code, California Department of Motor Vehicles, California Department of Health Care Services (DHCS), California Association of DUI Treatment Programs.