At a California Department of Motor Vehicles (DMV) Administrative Per Se (APS) hearing, the burden of proof is preponderance of the evidence.

Unlike a criminal DUI trial—which requires proof "beyond a reasonable doubt"—a California DMV hearing is a civil administrative proceeding.

Under the preponderance of the evidence standard, the DMV must prove that it is "more likely than not" (greater than a 50% likelihood) that the legal grounds for suspending your driver's license are met.

Because the DMV initiates the administrative suspension action, the DMV bears the initial burden of proof. If the DMV fails to meet this standard on any required legal element, the hearing officer must "set aside" (dismiss) the suspension, allowing you to keep your driving privileges.

What Does the California DMV Have to Prove at an APS Hearing?

To uphold an administrative license suspension following a DUI arrest under California Vehicle Code § 13353.2 or § 13353, the DMV hearing officer must determine whether the evidence satisfies specific statutory issues. The exact elements depend on whether you completed a chemical test or refused testing.

Standard Chemical Test Cases (BAC of 0.08% or Higher)

When you submit to a breath or blood test, the DMV must prove three core elements by a preponderance of the evidence:

• Reasonable Cause: The arresting officer had reasonable cause to believe you were driving a motor vehicle in violation of California DUI laws (such as Vehicle Code § 23152 or § 23153).

• Lawful Arrest: You were placed under a lawful arrest, meaning the initial traffic stop and detention complied with Fourth Amendment constitutional standards.

• Prohibited Blood Alcohol Concentration (BAC): You were driving with a BAC of 0.08% or higher (or 0.04% or higher if operating a commercial vehicle, or 0.01% or higher if under age 21).

Chemical Test Refusal Cases

If the arresting officer alleges that you refused or failed to complete a breath or blood test under California's Implied Consent Law (Vehicle Code § 23612), the DMV must prove four elements by a preponderance of the evidence:

• Reasonable Cause: The officer had reasonable cause to believe you were driving under the influence.

• Lawful Arrest: The officer lawfully arrested you for DUI.

• Proper Admonishment: The officer explicitly informed you that refusing or failing to complete a chemical test would result in the suspension of your driving privilege for one year, or revocation for two or three years.

• Willful Refusal: You refused to submit to, or failed to complete, the chemical test after being requested to do so by the officer.

How Does the DMV Burden of Proof Compare to Criminal DUI Court?

A California DUI arrest triggers two completely separate legal tracks: the administrative DMV hearing and the criminal court case. Each forum operates under different decision-makers, evidentiary rules, and standards of proof.

How Does the Burden Shift During a California DMV Hearing?

In practice, the DMV frequently satisfies its initial burden of proof simply by introducing the arresting officer's sworn statement (Form DS 367), the arrest report, and the chemical test lab results into evidence.

Under California evidentiary presumptions (such as Evidence Code § 664), official duties are presumed to have been regularly performed unless challenged.

Once the DMV establishes this prima facie case, the burden effectively shifts to the driver and their defense attorney to rebut the evidence. To win the hearing and set aside the suspension, the defense must present affirmative evidence or expose fatal defects that tip the scale back below the preponderance threshold.

Common Ways to Rebut the DMV's Evidence

• Lack of Probable Cause or Unlawful Stop: Demonstrating through dashcam video, body-worn camera footage, or officer cross-examination that the police lacked legal justification to initiate the traffic stop or detain you.

• No Proof of Driving: Showing that the officer did not observe you driving and lacked sufficient circumstantial evidence to establish when you drove the vehicle.

• Rising Blood Alcohol Concentration: Presenting forensic toxicology testimony proving that while your BAC was 0.08% or higher at the time of testing, it was still rising and remained below 0.08% while you were actually driving.

• Title 17 Violations & Equipment Errors: Establishing that the breathalyzer was improperly calibrated, lacked required maintenance logs, or that the officer failed to observe a mandatory 15-minute continuous observation period under California Code of Regulations Title 17.

• Fatal Paperwork Deficiencies: Identifying missing signatures, unsworn statements, contradictory timestamps, or omitted chemical test admonishments on the officer's DS 367 form.

Frequently Asked Questions (FAQs)

Who has the burden of proof at a California DMV hearing?

The California Department of Motor Vehicles (DMV) carries the initial burden of proof. Because the DMV is attempting to suspend your driving privilege, the agency must establish each required statutory element by a preponderance of the evidence before a suspension can be upheld.

Can you win a DMV hearing and still lose your criminal DUI case?

Yes. Because the DMV APS hearing and the criminal court case are entirely independent proceedings, winning at the DMV does not automatically dismiss your criminal DUI charges. However, testimony and subpoenaed records uncovered during the DMV hearing often reveal weaknesses that help your defense attorney negotiate a reduction or dismissal in criminal court.

What happens if you lose your DMV hearing but are found not guilty in court?

If you are acquitted (found "not guilty") of the criminal DUI charge in court, the DMV must reverse an administrative suspension that was based on a 0.08% or higher BAC. Note that a dismissal or plea bargain to a lesser offense (such as "wet reckless") does not automatically reverse a DMV suspension—only a formal acquittal on the underlying DUI charge triggers mandatory reinstatement.

How long do you have to request a California DMV hearing after a DUI arrest?

You have 10 calendar days from the date of your arrest (or receipt of the Notice of Suspension) to request an Administrative Per Se hearing with the DMV Driver Safety Office. Missing this 10-day deadline forfeits your right to a hearing and results in an automatic driver's license suspension 30 days after your arrest.

Is a DMV hearing officer a judge or a lawyer?

No. A DMV hearing officer is an administrative employee of the California Department of Motor Vehicles. They are neither Superior Court judges nor licensed attorneys, yet they act as both the prosecutor presenting the DMV's evidence and the decision-maker ruling on legal objections and license suspensions.

Speak to a DUI Defense Lawyer

Navigating the relaxed evidentiary rules and strict 10-day deadline of a California DMV hearing requires immediate strategic action.

Because the preponderance-of-the-evidence standard favors the DMV's reliance on police paperwork, an experienced California DUI defense attorney at Cron, Israels & Stark can subpoena calibration logs, cross-examine the arresting officer under oath, and challenge procedural errors before your temporary license expires.

Contact a qualified DUI defense lawyer immediately after an arrest to protect your driving privileges and build a coordinated defense for both your DMV hearing and criminal court case.