DUI Laws in California (DUI)
California uses the term "DUI" for impaired driving offenses. The standard BAC limit is 0.08%. The lookback period is 10 years. 4th DUI within 10 years. Below are the full details of California's DUI laws and penalties.
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Overview
California handles more DUI cases than any other state, with roughly 150,000 DUI arrests annually. The state operates a dual-track system where the DMV pursues an administrative license suspension independent of the criminal court process, meaning a driver faces two separate proceedings from a single arrest. California became the first state to require IID installation statewide for all DUI convictions (effective January 2019), and the state's 10-year lookback period means prior convictions from up to a decade ago can elevate charges. A fourth DUI within 10 years is an automatic felony, and California's 'Watson murder' doctrine allows prosecutors to charge repeat DUI offenders who cause death with second-degree murder.
Official term: DUI
BAC Limits
| Driver Type | BAC Limit |
|---|---|
| Standard (21+) | 0.08% |
| Commercial (CDL) | 0.04% |
| Under 21 | 0.01% |
| Enhanced Penalty | 0.15% (sentence enhancement); 0.20% (additional enhancement in some counties) |
Penalties by Offense
| Offense | Classification | Jail Time | Fines | License Suspension | IID |
|---|---|---|---|---|---|
| 1st Offense | Misdemeanor | Up to 6 months in county jail; no mandatory minimum, but 48 hours commonly imposed. With BAC of 0.15%+, courts typically impose 48 hours mandatory. With BAC of 0.20%+, enhanced jail time is likely. | $390 to $1,000 base fine; with penalty assessments and fees, total cost is approximately $1,800 to $2,600 | 4-month DMV administrative suspension; 6-month court-ordered suspension. Restricted license with IID available immediately (no hard suspension period under current law). | Required for all first DUI offenders statewide; minimum 4-month IID requirement (6 months if BAC was 0.15%+). IID allows unrestricted driving during the suspension period. |
| 2nd Offense | Misdemeanor | Mandatory minimum 96 hours (4 days); up to 1 year in county jail. Most courts impose 10-30 days. Jail time cannot be fully suspended. | $390 to $1,000 base fine; total with assessments approximately $1,800 to $2,800 | 2-year DMV suspension; IID-restricted license available after 12 months of hard suspension (or immediately with IID under newer rules) | Required for minimum 1 year; allows driving during suspension period. Must install on all vehicles owned or operated. |
| 3rd Offense | Misdemeanor | Mandatory minimum 120 days; up to 1 year in county jail. Courts frequently impose 6-12 months. Alternative sentencing (residential treatment) may be available. | $390 to $1,000 base fine; total with assessments approximately $1,800 to $18,000 depending on circumstances | 3-year DMV revocation; must wait 18 months before applying for restricted license with IID | Required for minimum 2 years upon reinstatement; monitored by DMV |
| Felony | Felony — specific charges include VC 23550 (4th+ DUI) or VC 23153 (DUI causing injury) | 16 months, 2 years, or 3 years in state prison for 4th+ DUI. DUI causing injury: 16 months to 4 years (or up to 6 years with great bodily injury enhancement). Additional consecutive 1-year terms for each additional victim. | $390 to $5,000 base fine; total with assessments can reach $18,000+. Restitution to victims is mandatory for DUI causing injury. | 4-year DMV revocation for felony DUI; 5-year revocation for DUI causing injury with prior. Must petition DMV for reinstatement after revocation period. | Required for minimum 3 years upon reinstatement; may be required for longer based on court order |
Felony threshold: 4th DUI within 10 years, OR any DUI causing injury (may be charged as felony), OR any prior felony DUI conviction. Lookback period: 10 years — California counts prior DUI convictions (including wet reckless pleas) within the past 10 years for purposes of charging repeat offenses and applying enhanced penalties.
Additional Penalty Details
| Offense | Community Service | Probation | DUI School |
|---|---|---|---|
| 1st Offense | Not mandatory for first offense; may be ordered at court's discretion as alternative to jail time | 3 to 5 years of informal (summary) probation; standard conditions include no driving with any measurable BAC, submit to chemical testing if arrested, and no committing additional crimes | Mandatory first-offender DUI school: 3-month program (30 hours) for BAC under 0.15%; 6-month program (52 hours) for BAC of 0.15% to 0.19%; 9-month program (60+ hours) for BAC of 0.20%+ |
| 2nd Offense | 30 hours commonly ordered; court has discretion | 3 to 5 years of informal probation with enhanced conditions; must comply with all DUI school and treatment requirements | Mandatory 18-month DUI program (SB 38 program); 52+ hours of education and counseling sessions; some courts may order 30-month program |
| 3rd Offense | Court-ordered; varies by jurisdiction | 3 to 5 years of formal (supervised) probation; intensive conditions including treatment, testing, and check-ins | Mandatory 30-month DUI program (78+ hours of education and counseling); some courts order residential treatment |
| Felony | Court-ordered; community service or Cal-Trans work may be imposed | 3 to 5 years of formal felony probation (if probation granted instead of prison); intensive supervision with frequent check-ins and testing | Mandatory 30-month DUI program at minimum; residential treatment often required; court-ordered aftercare |
Implied Consent Law
Under California Vehicle Code Section 23612, any person driving a motor vehicle is deemed to have given consent to chemical testing of blood or breath when lawfully arrested for DUI. The driver may choose between a breath test and a blood test (breath is offered first). A urine test is only available if neither breath nor blood testing is available. Preliminary alcohol screening (PAS) tests administered at the roadside before arrest are generally optional for drivers over 21 (but mandatory for those on DUI probation or under 21).
Refusal penalties: Refusing a chemical test after lawful arrest results in a 1-year license suspension for a first refusal (added to any DUI suspension), 2 years for a second refusal, and 3 years for a third refusal. No restricted license is available during a refusal suspension. The refusal also triggers a mandatory sentence enhancement of 48 additional hours in jail for a first offense, 96 hours for a second offense, and 10 additional days for a third offense. The refusal is admissible as evidence at trial.
Aggravating Factors
| Factor | Impact |
|---|---|
| BAC of 0.15% or higher | Court may impose enhanced jail time; mandatory enrollment in longer DUI school (6-month or 9-month program instead of 3-month); higher likelihood of jail time for first offense |
| Child passenger under 14 years old | Sentence enhancement under VC 23572: additional 48 hours in jail for first offense, 10 days for second, 30 days for third, and 90 days for fourth. Separate child endangerment charges under PC 273a may also apply. |
| Excessive speed (20+ mph over on surface streets or 30+ mph over on freeway) | Additional 60-day sentence enhancement under VC 23582; may elevate misdemeanor DUI to more severe sentencing range |
| Refusal to submit to chemical testing | Mandatory additional jail time (48 hours to 18 days depending on offense number); loss of restricted license eligibility; 1-3 year additional license suspension |
| DUI causing injury or death | Felony charges under VC 23153; 16 months to 6+ years in state prison; 'Watson murder' (second-degree murder under PC 187) charges possible for repeat offenders causing death, carrying 15 years to life |
| Prior DUI conviction (especially felony DUI) | Any subsequent DUI is automatically a felony if a prior felony DUI exists on record; enhanced mandatory minimums for second and third misdemeanor DUIs |
DUI with Injury
Classification: Wobbler — can be charged as a misdemeanor or felony depending on severity of injury, BAC level, and prior record. Typically charged as a felony.
Misdemeanor DUI with injury: up to 1 year in county jail, fines up to $5,000 plus assessments, 1-3 year license suspension, restitution to victims. Felony DUI with injury: 16 months, 2, 3, or 4 years in state prison (up to 6 years with great bodily injury enhancement under PC 12022.7), plus 1 additional year for each additional victim (up to 3 additional years). If death results, vehicular manslaughter while intoxicated (PC 191.5) carries 4-10 years, and Watson second-degree murder (PC 187) carries 15 years to life for repeat offenders.
Underage DUI
Drivers under 21 with a BAC of 0.01% or higher face a 1-year license suspension under the zero-tolerance law (VC 23136). If BAC is 0.05% to 0.07%, the infraction triggers a 1-year suspension plus mandatory DUI education. If BAC is 0.08% or higher, the underage driver faces full adult DUI charges and penalties in addition to the zero-tolerance consequences. A DUI conviction for a driver under 21 delays the ability to obtain a full license, affects insurance rates dramatically, and can impact college admissions, financial aid, and employment prospects. Preliminary alcohol screening (PAS) tests are mandatory for drivers under 21.
Diversion Programs
Program: Misdemeanor DUI Diversion (AB 3234, effective 2021; made permanent 2023)
California's misdemeanor diversion program (Penal Code Section 1001.95) allows judges to offer diversion for misdemeanor DUI offenses. The program requires completion of court-ordered conditions — typically DUI school, treatment programs, community service, and/or other rehabilitative measures — over a period of up to 2 years. If the defendant successfully completes all conditions, the charges are dismissed and the arrest record may be sealed. This is a significant change from California's prior policy of never allowing DUI diversion.
Eligibility: Available for misdemeanor DUI offenses only (not felony DUI or DUI causing injury). The judge has sole discretion to grant diversion. Factors considered include BAC level, prior record, circumstances of the offense, and public safety. There is no statutory prohibition based on prior DUI history, but judges are less likely to grant diversion for repeat offenders or high-BAC cases. The DMV administrative suspension still applies even if criminal diversion is granted.
How Long a DUI Stays on Your Record
A DUI conviction stays on your California driving record (DMV record) for 10 years. On your criminal record, a misdemeanor DUI remains visible indefinitely but may be expunged (dismissed) under PC 1203.4 after completing probation. Expungement under PC 1203.4 does not remove the conviction from your DMV record and does not prevent the conviction from being used as a prior in future DUI cases within the 10-year lookback. Felony DUI convictions may be reduced to misdemeanors under PC 17(b) and then expunged. California's new diversion law (AB 3234) allows complete dismissal and record sealing for eligible cases.
Key Statutes
- Cal. Veh. Code Section 23152
- Primary DUI statute — subsection (a) prohibits driving under the influence; subsection (b) prohibits driving with BAC of 0.08% or more; additional subsections cover drugs, commercial vehicles, and combined alcohol/drugs
- Cal. Veh. Code Section 23153
- DUI causing bodily injury — felony/wobbler statute that applies when a DUI results in injury to another person; establishes enhanced penalties including state prison
- Cal. Veh. Code Section 23550
- Fourth or subsequent DUI within 10 years — establishes felony penalties for four or more DUI convictions within a 10-year period
- Cal. Veh. Code Section 23612
- Implied consent law — establishes consent to chemical testing, choice of breath or blood, and penalties for refusal including enhanced jail time and license suspension
- Cal. Pen. Code Section 1001.95
- Misdemeanor diversion statute (AB 3234) — authorizes judges to offer diversion for misdemeanor offenses including DUI; outlines conditions, duration, and dismissal upon completion
Frequently Asked Questions
Is a DUI a felony in California?
How long does a DUI stay on your record in California?
What are the penalties for a first DUI in California?
Can I get a DUI dismissed in California?
Do I need an ignition interlock device for a first DUI in California?
What happens if I refuse a breathalyzer in California?
What is a 'wet reckless' in California?
What is Watson murder in California?
Related Guide
DUI license recovery in California→Step-by-step guide to getting your license back after a DUI in California — suspension periods, IID requirements, SR-22 insurance, reinstatement fees, and process.
Take Action — Direct Links
- California DMV — DUI Information
Official DMV page for administrative license actions, IID requirements, hearing requests, and reinstatement procedures after a DUI arrest
- State Bar of California — Lawyer Referral Service
Find a licensed DUI defense attorney in California through the state bar's referral service; includes initial consultations
- MADD California
Mothers Against Drunk Driving California chapter — victim services, court accompaniment, DUI education and prevention resources
- California Department of Health Care Services — Substance Use Disorder Treatment
State resources for substance abuse treatment, Medi-Cal covered treatment programs, and court-ordered DUI treatment program information
- California Courts — Self-Help: DUI Cases
Official judicial branch guide to DUI court procedures, expungement petitions, and self-represented defendant resources
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