A second DUI within ten years is treated as a priorable offense in California, which means the first conviction is counted against you and the minimums go up. The good news is that a second offense is still a misdemeanor in the ordinary case, and there is real room to work. I want to walk through what the law requires and where these cases can be defended.

The ten-year window

California measures priors over a ten-year period. If your first DUI conviction falls within ten years of the date of the new offense, it counts as a prior under Vehicle Code 23540. The exact dates matter, and so does whether the first case was actually a DUI or something else, such as a wet reckless. One of the first things I check is whether the claimed prior truly qualifies, because not every earlier case counts.

What a second offense carries

On a standard second offense, the statutory exposure includes:

  • County jail time, with a range that starts at a mandatory minimum and can be served in part through alternative programs in many counties.
  • An 18-month licensed DUI program, longer than the program for a first offense.
  • A two-year license suspension from the court, with the ability to apply for a restricted license sooner by installing an ignition interlock device.
  • Probation, fines and fees, and ignition interlock requirements.

The DMV imposes its own suspension separate from the court case, and the deadline to request a hearing is short, so that piece needs attention right away.

Challenging the prior

Because the prior is what drives the increased penalties, the prior itself is a target. If the earlier conviction was obtained without a valid waiver of rights, or if it does not actually qualify under the statute, it may be possible to keep it from counting. Where the prior is solid, the focus shifts to the current case.

Defending the current case

A second offense is defended the same way a first offense is, through the lawfulness of the stop, the field sobriety testing, and the chemical evidence. The stakes are higher, so the work is more thorough. Even where a conviction is likely, there are meaningful differences between the minimum sentence and the maximum, and between a second DUI and a reduced charge. Program completion, treatment, and mitigation all play a role in keeping the result closer to the floor than the ceiling.

Where to start

A second DUI is serious but workable, and the early moves on both the court case and the DMV matter. You can get a free written case analysis below or call me directly. You may also want to read about how prior DUI convictions affect a charge and challenging priors in a DUI case.