A third DUI within ten years is a serious matter in California. It is still usually charged as a misdemeanor, but the mandatory consequences climb sharply and the state begins treating you as a repeat offender. I want to explain what a third offense carries under Vehicle Code 23546 and where there is still room to defend the case.

What a third offense carries

On a standard third offense within the ten-year window, the statutory exposure includes:

  • A mandatory minimum of county jail time that is substantially longer than a second offense, with a range up to a year.
  • A 30-month licensed DUI program.
  • A three-year license revocation from the DMV, with ignition interlock requirements to obtain a restricted license.
  • Designation as a habitual traffic offender, which carries its own penalties if you are caught driving on the revoked license.
  • Probation, fines and fees, and treatment conditions.

The line between a third misdemeanor and a felony

A third DUI by itself is generally a misdemeanor, but the picture changes if there is an injury, if there is a prior felony DUI, or if a fourth offense follows. A fourth DUI within ten years can be charged as a felony under Vehicle Code 23550. Understanding where your case sits on that line is important, because it shapes the whole strategy.

Defending a third offense

The defense begins with the priors. Each prior conviction has to qualify, and each one is worth examining for defects in how it was obtained. If a prior can be knocked out, the current case may be treated as a second rather than a third, which changes the minimums. From there, the current charge is challenged through the stop, the testing, and the chemical evidence, just like any DUI.

Mitigation carries real weight at this level. Treatment, sobriety efforts, and a documented plan can influence both the prosecutor's offer and the judge's sentence. The difference between the statutory minimum and the maximum is large, and that space is where the work happens.

Where to start

A third DUI puts your license and your liberty at real risk, and the priors are the heart of the case. You can use the free written case analysis below or call me directly. It may also help to read about challenging priors in a DUI case and when a DUI is charged as a felony.