State service guide

Connecticut DUI laws: 45-day suspension structure, 7-day DMV hearing window, and ignition-interlock-heavy restoration

Connecticut DUI law works on two tracks at once: DMV administrative action after a failed or refused chemical test, and the separate criminal court case. The practical rules are the BAC thresholds of 0.08 for most drivers and 0.02 for drivers under 21, the short 7-day deadline to request a DMV Administrative Per Se hearing after the suspension notice is mailed, and the fact that restoration usually turns on an ignition interlock device rather than on a long no-drive period alone. On the conviction side, Connecticut's default license consequence for a first DUI is 45 days of suspension followed by 1 year of IID, while a second conviction within 10 years means 45 days plus 3 years of IID and a third within 10 years leads to permanent revocation unless later reversed or reduced.

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BAC threshold Connecticut uses 0.08 BAC for most drivers and 0.02 BAC for drivers age 21 or younger
DMV hearing deadline The DMV says you have 7 days from the mailed suspension notice to request an Administrative Per Se hearing
First conviction license penalty A first Connecticut DUI conviction brings a 45-day suspension followed by 1 year of ignition interlock
Repeat-offense window Second and third DUI conviction penalties escalate when the prior conviction was within 10 years

Overview

What this page helps you verify

A strong Connecticut DUI page should not collapse the DMV and court pieces into one penalty chart. Connecticut's own DMV materials separate Administrative Per Se action for failing or refusing testing from court-conviction consequences under the DUI statutes. The better explanation is therefore procedural first: check whether the issue is a mailed DMV suspension notice, a court conviction, an under-21 case, or a specialized aggravated statute such as child-passenger or school-transportation DUI.

Last reviewed: 2026-05-18. This page was manually upgraded against service-specific official sources, but requirements can still change quickly.

Usually needed

Documents and information to prepare

  • The DUI arrest paperwork, including the suspension notice and any chemical-test or refusal documentation
  • The mailed DMV Administrative Per Se notice if you plan to request a hearing within the deadline
  • Court paperwork showing the exact charge and whether the case involves a first, second, or third conviction within 10 years
  • Ignition interlock installation and compliance records if you are restoring driving privileges after a suspension or conviction
  • Any Judicial Branch program paperwork if you are applying for the Pretrial Alcohol Education Program in an eligible case

Typical flow

What the process often looks like

  1. Treat the DMV suspension process and the criminal DUI case as separate Connecticut problems from the start.
  2. Read the suspension notice immediately, because Connecticut DMV says the hearing request deadline is 7 days from the date the notice is mailed.
  3. Identify whether the case involves a failed test, a refusal, an under-21 driver, or a repeat conviction within 10 years, because Connecticut changes the IID and restoration rules across those categories.
  4. If the case reaches conviction or the DMV suspension becomes final, plan around IID installation and restoration requirements instead of assuming the issue ends when the 45-day suspension period ends.

Two tracks

A Connecticut DUI arrest can trigger DMV action before the criminal case is finished

That split is the most important structural point on the page.

  • Connecticut DMV says you can lose your license through Administrative Per Se for failing or refusing a chemical alcohol test, separate from the court case.
  • The DMV page says a suspension notice is mailed to the address of record and gives only 7 days to request a hearing.
  • For alcohol-related suspensions, restoration generally requires installation of an ignition interlock device before driving privileges come back.

Administrative Per Se

Connecticut's admin side is short on hearing time and long on interlock consequences

This is where many generic summaries miss the practical burden.

  • The state's implied-consent advisory says a failed test or refusal can lead to a 45-day suspension after arrest-side processing.
  • Connecticut's IID rules distinguish age and refusal status: DMV materials say drivers 21 and older with an elevated BAC face 6 months of IID for a first Administrative Per Se suspension, drivers under 21 with an elevated BAC face 1 year, and a first refusal requires 1 year regardless of age.
  • The Connecticut DUI page also states that later suspensions increase the IID period, reaching 2 years or 3 years depending on age and whether the case is a refusal.

Court conviction

Conviction penalties in Connecticut are built around a 45-day suspension plus escalating IID and repeat-offense consequences

This is the court-side framework the DMV page and statutes align on.

  • For a first conviction, Connecticut imposes a 45-day license suspension followed by 1 year of IID.
  • For a second conviction within 10 years, the statute and DMV page use the same 45-day suspension but require 3 years of IID, with driving during the first year limited to work, school, treatment, IID service, or probation-related travel.
  • For a third conviction within 10 years, Connecticut permanently revokes the license, though the statutes allow a later request for reversal or reduction after the required waiting period.

Special categories

Under-21 cases and specialized DUI statutes can make Connecticut harsher than a basic adult first-offense summary suggests

This is where a flat benchmark usually becomes too simplistic.

  • Connecticut treats drivers age 21 or younger as legally intoxicated at 0.02 BAC or higher.
  • The DMV page separately cites the under-21, child-passenger, and school-transportation DUI statutes, which can extend IID consequences beyond the ordinary adult chart.
  • The Judicial Branch also says the Pretrial Alcohol Education Program may be available in some eligible DUI cases and that successful completion leads to dismissal, so a first arrest does not automatically mean a conviction.

Accuracy notes

Where people get tripped up

  • Connecticut DUI content should separate Administrative Per Se from the criminal conviction chart, because DMV can suspend or restrict driving before the court case is resolved.
  • The benchmark's usual first-offense framing is too flat for Connecticut because interlock requirements depend on age, refusal status, and whether the consequence comes from DMV or from a conviction.
  • The short hearing-request deadline matters operationally. Connecticut DMV's current page uses a 7-day deadline from the mailed notice, which is the kind of detail that goes stale quickly in generic summaries.
  • Special statutes for under-21 drivers, child passengers, and school transportation should be treated as distinct Connecticut aggravators rather than buried inside the ordinary adult DUI rule.

FAQ

Common questions

  • How long do I have to request a Connecticut DMV hearing after a DUI arrest?

    Connecticut DMV says you have 7 days from the date the suspension notice is mailed to request an Administrative Per Se hearing.

  • What is the license penalty for a first Connecticut DUI conviction?

    The standard first-conviction license penalty is a 45-day suspension followed by 1 year of ignition interlock.

  • What is the BAC limit for drivers under 21 in Connecticut?

    Connecticut treats drivers age 21 or younger as legally intoxicated at 0.02 BAC or higher.

  • Can a first Connecticut DUI case ever be dismissed instead of ending in conviction?

    Sometimes. The Connecticut Judicial Branch says the Pretrial Alcohol Education Program is available in eligible cases, and successful completion results in dismissal.

Sources

Official references used for this page

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