EVAN CHRISTOPHER VARGAS, ESQ.
Senior Partner – Liberty Criminal Defense & DUI Lawyers
21+ Years Experience | Licensed Since 2004 | Bilingual English / Español
Corona: (909) 773-2356 Irvine: (949) 804-3487
Free Consultation
California takes felony DUI offenses extremely seriously. Prosecutors pursue these cases aggressively, often filing multiple enhancements that pile additional years onto any potential prison sentence. Your freedom, your livelihood, and your family demand equally aggressive legal defense. That is precisely what Senior Partner Evan Vargas and Liberty Criminal Defense & DUI Lawyers deliver across Riverside, San Bernardino, and Orange County. The time to act is right now. Do not speak to law enforcement or prosecutors without first consulting an attorney.
A felony DUI offense in California is a driving under the influence charge elevated beyond a standard misdemeanor due to aggravating factors defined in the California Vehicle Code. While most first-, second-, and third-offense DUIs are charged as misdemeanors, certain circumstances transform a DUI into a felony. This is a far more serious charge carrying state prison exposure, substantial fines, lengthy license suspensions, and in many cases, a permanent mark on your criminal record that can alter the course of your life.
Immediate Steps After a Felony DUI Arrest 1. Invoke your right to remain silent immediately. 2. Request an attorney before answering any questions. 3. Request a DMV hearing within 10 days to preserve your license. 4. Write down everything you remember about the arrest. 5. Call Evan Vargas: (909) 773-2356 |
California law specifies exactly four circumstances under which a DUI charge is elevated to a felony. Understanding them is the first step to mounting an effective defense.
Under California Vehicle Code § 23153, it is a crime to drive under the influence and, through any negligent act or omission, cause bodily injury to another person. This charge can be filed as a felony even for a first offense, meaning your prior record is irrelevant. The prosecution must prove that your intoxication and your negligent driving were both factors in the victim’s injuries.
When a fatality results, prosecutors may instead file charges under Penal Code § 191.5 (gross vehicular manslaughter while intoxicated) or, in egregious cases, second-degree murder under the “Watson murder” doctrine which is reserved for repeat DUI offenders who signed a Watson advisement at a prior conviction.
Under Vehicle Code § 23550.5, a fourth DUI conviction within a 10-year “lookback period” is charged as a straight felony. The lookback period counts prior DUI convictions, wet reckless reductions (VC 23103.5), and out-of-state DUI convictions that would have been California DUIs. Unlike a VC 23153 charge, there is no prosecutorial discretion to file this as a misdemeanor.
Vehicle Code § 23550 similarly creates felony exposure when a defendant has three or more prior DUI convictions within 10 years and the current offense involves any combination of alcohol, drugs, or both.
Under VC § 23550.5(a), any subsequent DUI conviction, even if it would otherwise be a first, second, or third offense, is automatically charged as a felony if the defendant has any prior felony DUI conviction on their record, regardless of when that prior conviction occurred. There is no 10-year lookback for this circumstance: a felony DUI from 20 years ago can still trigger felony charges on a new DUI arrest today.
When a driver is arrested for DUI and a child under the age of 14 was in the vehicle, prosecutors frequently add a charge of child endangerment under Penal Code § 273a. This charge can be filed as a felony and carries its own separate penalties, including state prison time, that stack on top of the DUI sentence. The presence of a child can also be used as an aggravating factor at sentencing.
A side-by-side comparison of what’s at stake. These are baseline penalties; enhancements, prior convictions, and injury severity can significantly increase each figure.
Penalty Category
| Misdemeanor DUI 1st–3rd Offense, No Injury | Felony DUI 4th+ / Prior Felony | Felony DUI Causing Injury VC 23153 |
Incarceration | Up to 6 months county jail (1st); up to 1 year (2nd/3rd) | 16 months, 2, or 3 years state prison | 16 months to 4 years state prison; up to 6 years with GBI |
Fines & Assessments | $390–$1,000 base + assessments (~$4,000–$5,000 total) | Up to $5,000 base + assessments (~$18,000+) | Up to $5,000 base + assessments (~$18,000+) |
Driver’s License | 6 month suspension (1st); 2-year revocation (2nd/3rd) | 4-year revocation; Habitual Traffic Offender designation | Minimum 5-year revocation |
DUI School | 3–9 months (1st); 18 months (2nd+) | 18–30 month DUI program | 18–30 month DUI program |
Ignition Interlock | Required (6 months to 3 years) | Required upon any reinstatement | Required upon any reinstatement |
Three Strikes | No strike | Typically no strike (without GBI) | STRIKE if GBI enhancement (PC 12022.7) charged |
Probation | 3–5 years informal (summary) probation | 3–5 years formal (supervised) probation | 3–5 years formal (supervised) probation |
Restitution | Required if injury involved | Required if injury involved | Required — amount varies; can be substantial |
Expungement | Generally eligible (PC 1203.4) | NOT eligible if state prison served | NOT eligible if state prison served |
Penalties listed are statutory ranges. Actual sentences depend on case-specific factors, judicial discretion, and plea negotiations. Consult an attorney for advice specific to your situation.
A felony DUI charge is not a conviction. Every piece of evidence in your case can be scrutinized, challenged, and potentially destroyed. Evan Vargas examines each of these avenues in every case he takes.
1. Unlawful Traffic Stop — No Reasonable Suspicion The Fourth Amendment prohibits unreasonable searches and seizures. An officer must have articulable reasonable suspicion of a traffic violation or criminal activity before pulling you over. If the stop was unlawful, for example, the officer claimed you were weaving but dashcam footage shows otherwise, any evidence gathered after that stop may be suppressed. Without the evidence, the prosecution cannot prove its case. |
2. Breathalyzer Inaccuracy and Calibration Failures Breath testing devices require regular calibration, maintenance, and proper operation by trained officers. California Title 17 regulations govern exactly how breath tests must be conducted. If the device was not properly calibrated, the officer failed to observe a 15-minute deprivation period, the device had a defective fuel cell, or radio frequency interference was present, the BAC reading may be unreliable. A BAC of 0.08% that is actually 0.06% when measured correctly means no per se violation. |
3. Blood Test Chain of Custody and Lab Errors Blood draws must follow strict collection, preservation, and testing protocols under Title 17. Improper blood draw technique, contamination of the sample, fermentation in the blood vial, failure to refrigerate the sample, or breaks in the chain of custody can all render blood test results inadmissible or subject to a strong challenge at trial. Our team subpoenas lab records, technician training certificates, and maintenance logs. |
4. Rising Blood Alcohol — “Not Impaired at Time of Driving” Blood alcohol rises after you stop drinking as alcohol is absorbed. If there was a significant delay between when you were driving and when your BAC was measured, your BAC may have been below the legal limit while you were actually driving, even if it tested above 0.08% at the time of testing. Expert toxicology testimony can establish what your BAC likely was at the time of driving, which is what the law actually prohibits. |
5. Challenging Causation in DUI Causing Injury (VC 23153) Cases In a VC 23153 felony DUI causing injury case, the prosecution must prove that your negligent act or omission, separate from your intoxication alone, was a cause of the victim’s injuries. If another driver ran a red light, road conditions were hazardous, or the victim’s own negligence contributed, the causation element may be defeated entirely. Accident reconstruction experts, traffic engineers, and eyewitness testimony can all support this defense. |
6. Medical Conditions Mimicking Intoxication Certain medical conditions can produce symptoms that officers, who are undertrained in medical assessment, misinterpret as intoxication. Diabetic hypoglycemia can produce slurred speech, confusion, and an odor similar to alcohol. Neurological conditions, inner ear disorders, fatigue, and anxiety can affect balance and coordination on field sobriety tests. Auto-brewery syndrome, in rare cases, can cause endogenous alcohol production that registers on a breathalyzer without the person consuming alcohol. |
7. Miranda Rights Violations Once you are in custody, officers must advise you of your Miranda rights before interrogating you. Incriminating statements made without proper Miranda warnings, such as admitting to how many drinks you had, may be suppressed and kept out of trial entirely. This does not always result in a case dismissal, but it can significantly weaken the prosecution’s evidence. |
8. Challenging Prior Conviction Allegations When a felony DUI is predicated on prior DUI convictions, such as in a 4th-offense case under VC 23550.5, the prior convictions themselves can sometimes be challenged. If a prior conviction was entered without a valid waiver of constitutional rights, if the records are incomplete, or if an out-of-state conviction would not qualify as a California DUI, striking that prior could reduce the current charge from a felony back to a misdemeanor. |
A Southern California native who has spent his entire career in local courts, from the Riverside Superior Court to the West Justice Center in Westminster, Evan Vargas knows the prosecutors, the judges, and the local legal landscape in ways that out-of-area attorneys simply do not.
Felony DUI cases are won and lost on technical details: calibration records, Title 17 compliance, officer training logs, toxicology reports. Evan Vargas’s meticulous attention to detail means no stone is left unturned in your defense. He personally reviews all evidence before developing a defense strategy.
Mr. Vargas specializes in the most complex DUI matters: cases involving professional license consequences (doctors, nurses, lawyers, teachers, contractors), immigration implications for non-citizen clients, and DUI causing injury or death where the stakes are at their absolute highest.
DUI arrests don’t happen during business hours. Neither does our practice. When you call Liberty Criminal Defense & DUI Lawyers, you reach a team ready to fight for you around the clock – from the moment of arrest through every court appearance.
Direct, honest answers to the questions clients ask most.
A DUI becomes a felony in California in four main situations: (1) when the driver causes bodily injury or death to another person (VC 23153); (2) when it is the driver’s 4th or subsequent DUI within 10 years (VC 23550.5); (3) when the driver has a prior felony DUI conviction on their record; or (4) when a child under 14 was in the vehicle and was injured. Each of these circumstances elevates what could be a misdemeanor into a felony charge carrying state prison exposure.
Felony DUI penalties in California are severe. For a standard felony DUI (4th offense or prior felony DUI), penalties include 16 months, 2 years, or 3 years in state prison; fines up to $5,000 plus substantial penalty assessments; a 4-year driver’s license revocation; completion of an 18-month or 30-month DUI program; and designation as a ‘Habitual Traffic Offender.’ For DUI causing injury (VC 23153), penalties include 16 months to 4 years in state prison, fines up to $5,000, and a minimum 5-year license revocation. A felony DUI may also count as a ‘strike’ under California’s Three Strikes Law if great bodily injury is charged.
California Vehicle Code Section 23153 makes it a crime to drive under the influence of alcohol or drugs and, while doing so, commit any act or neglect any duty that causes bodily injury to another person. Unlike a standard DUI, VC 23153 can be charged as a felony even on a first offense if someone is injured. Prosecutors must prove (1) you were driving, (2) you were under the influence or had a BAC of 0.08% or higher, and (3) your negligent act or omission caused injury to another person.
In some circumstances, yes. When a felony DUI is charged as a ‘wobbler’ offense, meaning it can be charged as either a felony or misdemeanor, an experienced felony DUI lawyer may be able to negotiate a reduction to a misdemeanor. This typically requires demonstrating weaknesses in the prosecution’s case, mitigating circumstances, or negotiating a plea agreement. However, not all felony DUIs are wobblers: a 4th-offense DUI is a straight felony. Attorney Evan Vargas evaluates every case for reduction opportunities.
Yes. A felony DUI conviction creates a permanent criminal record that appears on background checks. This can affect employment, housing, professional licensing, and immigration status. Unlike some misdemeanors, felony convictions are generally not eligible for expungement under California Penal Code 1203.4 if you served state prison time. In limited circumstances a Certificate of Rehabilitation may be available. This is why fighting a felony DUI charge aggressively from the start is so critically important.
A DUI conviction, on its own, does not automatically count as a ‘strike’ under California’s Three Strikes Law. However, if the felony DUI charge includes a Great Bodily Injury (GBI) enhancement under Penal Code 12022.7, which prosecutors frequently add in DUI causing serious injury cases, then the GBI enhancement is a serious felony that counts as a strike. Two strikes double the sentence for any future felony; a third strike can mean 25 years to life in prison.
Yes, significantly. California professional licensing boards, including the Medical Board, Nursing Board, Bar of California, Department of Real Estate, and many others, have independent authority to discipline or revoke licenses for felony convictions. A felony DUI can trigger a licensing board investigation, formal accusation, and suspension or revocation of your license even if you avoid prison. This is an area of specialization for Evan Vargas.
A felony DUI conviction can have devastating immigration consequences for non-citizens. Depending on the specific charges and prior history, a felony DUI may constitute a ‘crime of moral turpitude’ or an ‘aggravated felony’ under federal immigration law, potentially triggering deportation, removal proceedings, inadmissibility, denial of naturalization, and bars to immigration benefits. Non-citizens facing any DUI charge should immediately consult an attorney experienced in both criminal defense and immigration consequences.
Effective defenses include: challenging the validity of the traffic stop (unlawful stop without reasonable suspicion); attacking breathalyzer or blood test accuracy (improper calibration, Title 17 violations, contamination); disputing causation in DUI causing injury cases; challenging whether the defendant was actually driving; presenting evidence of a medical condition mimicking intoxication; identifying Miranda rights violations; and challenging the validity of prior conviction allegations.
The cost of a felony DUI attorney in California varies based on case complexity, the attorney’s experience, and the jurisdiction. A felony DUI conviction can cost tens of thousands in fines, destroy your career, and result in prison time, making quality legal defense one of the most important investments you can make. Liberty Criminal Defense & DUI Lawyers offers free consultations to discuss fees, payment options, and the specifics of your case.
Facing a felony DUI offense in California is serious. Protect your family, your career and your license. The sooner you have experienced legal representation, the better your chances of a favorable outcome. Contact us 24/7! All consultations are free and confidential.
Corona / Inland Empire 4160 Temescal Canyon Rd, Suite 401 Corona, CA 92883 | Irvine / Orange County 300 Spectrum Center Drive, Suite 400 Irvine, CA 92618 |
