If you only remember one point about DUI penalties in California, remember this: BAC limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21; enhanced penalties commonly at 0.15%+. A first offense: First-offense misdemeanor DUI typically involves probation, fines, a DUI program, license suspension or restriction, and possible short jail. Felony threshold: DUI with injury (§ 23153), a fourth DUI within 10 years, or DUI with certain prior felonies can be charged as a felony. Procedure, examples, and the opinions below hang off Cal. Veh. Code §§ 23152, 23153. Lookback: Prior DUI convictions within 10 years enhance penalties and can trigger felony exposure on a fourth offense.. Ignition interlock: Ignition interlock is widely required statewide for DUI offenders seeking restricted or reinstated driving privileges (Veh. Code §§ 23575 et seq.).
First-offense penalties
First-offense misdemeanor DUI typically involves probation, fines, a DUI program, license suspension or restriction, and possible short jail.
Walking through California facts
Use this walkthrough to see which California authority does the work at each step.
A driver in California is charged with a first impaired-driving offense and wants to know what the statute actually sets.
- Start with the alcohol limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21; enhanced penalties commonly at 0.15%+
- Read the first-offense range: First-offense misdemeanor DUI typically involves probation, fines, a DUI program, license suspension or restriction, and possible short jail.
- Ask when the charge becomes a felony: DUI with injury (§ 23153), a fourth DUI within 10 years, or DUI with certain prior felonies can be charged as a felony. Lookback: Prior DUI convictions within 10 years enhance penalties and can trigger felony exposure on a fourth offense.
- Interlock: Ignition interlock is widely required statewide for DUI offenders seeking restricted or reinstated driving privileges (Veh. Code §§ 23575 et seq.).
California DUI prosecutions under Veh. Code § 23152 run parallel to DMV APS hearings under § 13353. Drivers must request a DMV hearing quickly (usually within 10 days of arrest). Criminal court addresses probation, DUI school, and interlock.
When a California DUI becomes a felony
DUI with injury (§ 23153), a fourth DUI within 10 years, or DUI with certain prior felonies can be charged as a felony.
Ignition interlock and license consequences
Ignition interlock is widely required statewide for DUI offenders seeking restricted or reinstated driving privileges (Veh. Code §§ 23575 et seq.).
How a typical California DUI case unfolds
California DUI prosecutions under Veh. Code § 23152 run parallel to DMV APS hearings under § 13353. Drivers must request a DMV hearing quickly (usually within 10 days of arrest). Criminal court addresses probation, DUI school, and interlock.
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Case law: DUI penalties in California
The PEOPLE, Plaintiff and Respondent, v. DANIEL JOSEPH FORSTER, Defendant and Appellant
…. A jury found Daniel Joseph Forster guilty of one count of driving under the influence of alcohol in violation of Vehicle Code 1 section 23152, subdivision (a), one count of driving while having a blood-alcohol concentration of .08 percent or more in violation of section 23152, *1750 subdivision (b), and one count of driving with a suspended license in violation of section 146…
The PEOPLE, Plaintiff and Respondent, v. DANIEL JOSEPH FORSTER, Defendant and Appellant is worth reading on California DUI penalties because the court put the point in its own words: "A jury found Daniel Joseph Forster guilty of one count of driving under the influence of alcohol in violation of Vehicle Code 1 section 23152, subdivision (a), one count of driving while having a blood-alcohol concentration of ." Use that passage as the starting point, then read the facts that precede it.
Andrew M. WADE v. The SUPERIOR COURT of Monterey County, Respondent The People, Real Party in Interest.
…ial diversion program after he was charged with misdemeanor driving under the influence with a blood alcohol concentration above 0.15 percent. At issue is the trial court's discretion to decide whether a defendant who is eligible to participate in pretrial diversion under the military diversion statute, Penal Code section 1001.80, is nevertheless unsuitable. We address whether…
Andrew M. WADE v. The SUPERIOR COURT of Monterey County, Respondent The People, Real Party in Interest. is worth reading on California DUI penalties because the court put the point in its own words: "At issue is the trial court's discretion to decide whether a defendant who is eligible to participate in pretrial diversion under the military diversion statute, Penal Code section 1001.80, is nevertheless unsuitable." Use that passage as the starting point, then read the facts that precede it.
The PEOPLE, Plaintiff and Respondent, v. MADOU TOURE, Defendant and Appellant
…ined. After a jury trial, defendant was convicted of felony driving under the influence of alcohol causing injury (Veh. Code, *1099 § 23153, subds. (a), (b)), 1 driving on a suspended license (§ 14601.2, subd. (a)), and resisting an executive officer (Pen. Code, § 69). He was sentenced to four years in state prison and appealed. On appeal, defendant argues (1) his four-year sta…
Practitioners open The PEOPLE, Plaintiff and Respondent, v. MADOU TOURE, Defendant and Appellant when California DUI penalties turns on the distinction in this sentence: "After a jury trial, defendant was convicted of felony driving under the influence of alcohol causing injury (Veh. Code, *1099 § 23153, subds. (a), (b)), 1 driving on a suspended license (§ 14601.2, subd. (a)), and resisting an executive officer (Pen. Code, § 69)." Do not lift it out of the facts the court was deciding.
The PEOPLE, Plaintiff and Respondent, v. GARNETT TAYLOR FORD, Defendant and Appellant
…er of the Monterey Police Department arrested appellant for driving under the influence of alcohol. At the police station, the officer requested that a licensed clinical technologist withdraw a blood sample from appellant. Without appellant’s consent, but without force, the technologist took the sample using a standard procedure and materials he obtained from a local hospital.…
On DUI penalties, The PEOPLE, Plaintiff and Respondent, v. GARNETT TAYLOR FORD, Defendant and Appellant speaks to the California dispute in this passage: "Monterey Police Department arrested appellant for driving under the influence of alcohol. At the police station, the officer requested that a licensed clinical technologist withdraw a blood sample from appellant." The surrounding opinion shows how the court applied that language to the record.
The PEOPLE, Plaintiff and Respondent, v. ALFRED DAVID FISCALINI, Defendant and Appellant
…P. J. A jury convicted defendant Alfred David Fiscalini of driving under the influence of alcohol causing injury to more than one victim (Veh. Code, §§ 23153, subd. (a), 23182), being under the influence of a controlled substance (Health & Saf. Code, § 11550), driving with a suspended license (Veh. Code, § 14601.1, subd. (a)), and possessing 28.5 grams or less of marijuana (He…
On DUI penalties, The PEOPLE, Plaintiff and Respondent, v. ALFRED DAVID FISCALINI, Defendant and Appellant speaks to the California dispute in this passage: "P. J. A jury convicted defendant Alfred David Fiscalini of driving under the influence of alcohol causing injury to more than one victim (Veh. Code, §§ 23153, subd. (a), 23182), being under the influence of a controlled substance (Health & Saf." The surrounding opinion shows how the court applied that language to the record.
The PEOPLE, Plaintiff and Respondent, v. WILLIAM DANIEL CADY, Defendant and Appellant
…injury (id., §§ 1192.7, subd. (c)(8), 1192.8); one count of driving under the influence of alcohol causing injury (Veh. Code, § 23153, subd. (a)) (count 7); one count of driving with a blood-alcohol content of 0.08 percent or more causing injury (id., § 23153, subd. (b)) (count 8); and one count of driving under the combined influence of alcohol and a drug causing injury (id.,…
On DUI penalties, The PEOPLE, Plaintiff and Respondent, v. WILLIAM DANIEL CADY, Defendant and Appellant speaks to the California dispute in this passage: "Veh. Code, § 23153, subd. (a)) (count 7); one count of driving with a blood-alcohol content of 0.08 percent or more causing injury (id., § 23153, subd. (b)) (count 8); and one count of driving under the combined influence of alcohol and a drug causing injury (id." The surrounding opinion shows how the court applied that language to the record.
The PEOPLE, Plaintiff and Respondent, v. DANIEL JASON GOSLAR, Defendant and Appellant
…153, subdivision (a), and one count of causing injury while driving under the influence of alcohol, with true findings on the same allegations of injury to multiple victims and the infliction of great bodily injury within the meaning of Penal Code section 12202.7, subdivision (a). Goslar was found not guilty of causing injury while driving with a blood-alcohol level of 0.08 or…
California opinions such as The PEOPLE, Plaintiff and Respondent, v. DANIEL JASON GOSLAR, Defendant and Appellant are cited where DUI penalties is disputed. The court stated: "Penal Code section 12202.7, subdivision (a). Goslar was found not guilty of causing injury while driving with a blood-alcohol level of 0." That is the language to brief; the rest of the decision supplies the procedural posture.
RAYMOND QUINTANA, Petitioner, v. THE MUNICIPAL COURT FOR THE SAN LEANDRO-HAYWARD JUDICIAL DISTRICT OF ALAMEDA
…of *364 confinement in county jail if a person convicted of driving under the influence of alcohol/drugs is also found to have willfully refused to take a test to determine the alcohol content of breath, blood or urine. 2 Petitioner was charged with one count of driving under the influence of alcohol. The complaint also alleged a prior driving under the influence conviction and…
RAYMOND QUINTANA, Petitioner, v. THE MUNICIPAL COURT FOR THE SAN LEANDRO-HAYWARD JUDICIAL DISTRICT OF ALAMEDA is worth reading on California DUI penalties because the court put the point in its own words: "Petitioner was charged with one count of driving under the influence of alcohol." Use that passage as the starting point, then read the facts that precede it.
Key takeaways
- BAC limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21; enhanced penalties commonly at 0.15%+
- Lookback period: Prior DUI convictions within 10 years enhance penalties and can trigger felony exposure on a fourth offense.
- First-offense range: First-offense misdemeanor DUI typically involves probation, fines, a DUI program, license suspension or restriction, and possible short jail.
- Felony threshold: DUI with injury (§ 23153), a fourth DUI within 10 years, or DUI with certain prior felonies can be charged as a felony.
- Ignition interlock: Ignition interlock is widely required statewide for DUI offenders seeking restricted or reinstated driving privileges (Veh.
- Primary authority: Cal. Veh. Code §§ 23152, 23153.
Blood alcohol limits in California
0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21; enhanced penalties commonly at 0.15%+
Lookback window for prior offenses
Prior DUI convictions within 10 years enhance penalties and can trigger felony exposure on a fourth offense.
Frequently asked questions
What is the legal BAC limit in California?
0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21; enhanced penalties commonly at 0.15%+
Is a first DUI a felony in California?
DUI with injury (§ 23153), a fourth DUI within 10 years, or DUI with certain prior felonies can be charged as a felony.
Will I need an ignition interlock device?
Ignition interlock is widely required statewide for DUI offenders seeking restricted or reinstated driving privileges (Veh. Code §§ 23575 et seq.).
This guide covers California impaired-driving law as of 2026. Sentencing grids, administrative DMV rules, and local diversion programs change — verify the live statute and speak with counsel about your charging document.