Jail Exposure and Mandatory Minimums for a Third Pennsylvania DUI

Attorney Answer

A third DUI in Pennsylvania carries a mandatory minimum jail term, and depending on the tier it can be a third-degree felony rather than a misdemeanor — but before anyone assumes this is a "third," check whether both priors legally count.

Grading. 75 Pa.C.S. § 3803 grades DUI by tier and by the number of prior offenses. With two prior offenses, a general-impairment or high-rate case is a misdemeanor of the second degree under § 3803(a)(2). But a third offense under § 3802(c) (highest rate), § 3802(d) (drugs), or following a chemical test refusal is a felony of the third degree under § 3803(b)(4.1). A third offense with a minor occupant is also a third-degree felony under § 3803(b)(5).

Mandatory minimums. 75 Pa.C.S. § 3804 sets the minimum term of imprisonment. On a third offense: not less than 10 days for general impairment under § 3804(a)(3); not less than 90 days for high rate under § 3804(b)(3); and not less than one year for highest rate, drugs, or refusal under § 3804(c)(3). The spread between those numbers is enormous, and which one applies is determined by the subsection charged and whether a refusal is alleged — not by the fact that it is a third case.

Whether the priors count. 75 Pa.C.S. § 3806 defines "prior offense" and sets a ten-year lookback measured from the date of the present offense — not from the date of sentencing, and not from the date of the prior conviction. And there is a recent development that could matter enormously here. In Commonwealth v. Shifflett, 335 A.3d 1158 (Pa. 2025), decided on May 30, 2025, the Pennsylvania Supreme Court held that under Alleyne v. United States, 570 U.S. 99 (2013), it is unconstitutional to treat a defendant's prior acceptance of Accelerated Rehabilitative Disposition as a "prior offense" under § 3806(a) for purposes of imposing an enhanced mandatory minimum. If one of your fiancé's two priors was ARD rather than a conviction, it may not be counted toward a third-offense mandatory minimum.

The figures above are statutory floors and grading ceilings. They are not a prediction of what a judge will do, and I am not going to give you one — that depends on the subsection charged, which priors legally count, and facts nobody can assess from a summary.

What you can do

1. Find the exact subsection charged — § 3802(a), (b), (c) or (d) — and whether a refusal is alleged. That one fact moves the mandatory minimum from 10 days to a year. 2. Pull the dates and dispositions of both prior matters, and measure the ten years back from the date of this offense. 3. Check whether either prior was ARD rather than a conviction. If so, tell his lawyer immediately and name Commonwealth v. Shifflett — it is directly on point. 4. Check whether anyone under 18 was in the vehicle. 5. Get a lawyer engaged before the preliminary hearing. 6. Start a drug and alcohol evaluation now, voluntarily, and keep the paperwork. Courts and county programs weigh what was completed before sentencing, not what was promised at it. 7. Ask counsel about county treatment court or DUI court eligibility. 8. Do not let anyone tell him what a third DUI "usually" gets, and do not make any decision about how to resolve the case based on a summary like this one.

⏱ Time limits apply. If a chemical test was refused, PennDOT will mail a separate suspension notice, and the window to appeal from that notice is short and runs independently of the criminal case. The license proceeding and the criminal prosecution are two different tracks with different standards of proof, and they can reach opposite results — winning one does not dispose of the other. The exact window depends on the notice date and your specific facts, so treat any PennDOT envelope as urgent the day it arrives.