Connecticut DUI Laws: Complete 2025 DUI Charges Guide
Connecticut enforces some of the nation’s most comprehensive Driving Under the Influence (DUI) laws, with strict penalties and mandatory programs designed to reduce drunk driving incidents. The state’s penalties increase with each impaired driving offense. Connecticut’s approach emphasizes both punishment and rehabilitation through mandatory education classes, ignition interlock devices, and substance abuse treatment programs.
Getting Started
If you’re arrested for a DUI in Connecticut, you face a dual legal process involving both administrative license actions through the Connecticut Department of Motor Vehicles (DMV) and criminal charges processed through the state’s court system. These two proceedings operate independently but can significantly impact each other’s outcomes. Connecticut requires immediate action on your part to protect your driving privileges and minimize long-term consequences.
Important Note: While this page provides detailed information about Connecticut DUI laws, DUI.org does not offer legal advice. Laws can change, so consult a qualified DUI attorney for personalized guidance.
Definitions to Know
DUI
In Connecticut, this refers to driving under the influence of alcohol or drugs. Connecticut uses the term DUI rather than DWI or OWI.
IID (Ignition Interlock Device)
A breathalyzer installed in a vehicle to prevent it from starting if alcohol is detected on your breath.
Connecticut Department of Motor Vehicles (DMV)
The Connecticut DMV is the state organization that handles administrative license suspensions, restricted license applications, and IID oversight . The DMV works alongside the court system but handles the administrative penalties related to your driving privileges.
Steps to Take After DUI Arrest in Connecticut
- Hire an Attorney
Legal counsel can help navigate both DMV administrative processes and criminal proceedings in Connecticut’s court system.
- Address License Suspension
Expect your driver’s license to be suspended based on the severity of the offense. In Connecticut, this happens quickly after arrest.
- Request an Administrative Hearing
If disputing a suspension, you must request a hearing with the Connecticut DMV within a specific timeframe after your arrest.
- Apply for a Restricted License
If eligible, you may apply for limited driving privileges by installing an ignition interlock device through the Connecticut DMV.
- Install an IID
A vehicle breathalyzer is required for certain offenses in Connecticut, especially for high-BAC convictions or repeat offenses.
Explore IIDs - Complete Substance Abuse Evaluation and Treatment
Attend evaluation and complete recommended programs through approved Connecticut providers.
- Pay Fines and Fees
You’ll need to pay court fines plus other fees, such as license reinstatement and state charges.
- Complete DUI Education Program
Mandatory alcohol education courses are required in Connecticut for drivers convicted of DUI.
- Attend Court Proceedings
Your case proceeds through Connecticut’s criminal court independently from administrative actions.
- Avoid Further Violations
Any new DUI or license violation can lead to severe penalties including jail time and longer suspensions.
DUI Laws in Connecticut
What Are the Legal Driving Alcohol Limits in Connecticut?
In Connecticut, it’s illegal to drive if you’re under the influence of alcohol, drugs, or both. The state enforces strict blood alcohol concentration (BAC) limits that vary based on the driver’s age and license type.
| Driver Category | Legal BAC Limit |
| Drivers over 21 | 0.08% |
| Commercial Drivers | 0.04% |
| Drivers under 21 | 0.02% |
Connecticut police often use breathalyzers to quickly check your breath alcohol concentration (BrAC), which provides an immediate assessment of your impairment level.
Connecticut DUI Degree Levels
Connecticut classifies DUI offenses into different categories based on prior offenses and specific circumstances surrounding the arrest(s). The state applies escalating penalties for drivers with multiple convictions within specific timeframes.
First Offense DUI
Typically classified as a misdemeanor with mandatory minimum penalties including fines, license suspension, and required education programs.
Second Offense DUI
Results in enhanced penalties including longer license suspensions, increased fines, and mandatory ignition interlock device installation.
Third and Subsequent Offenses
May be classified as felonies depending on the timeframe between offenses and can result in significant jail time, extended license suspensions, and permanent ignition interlock requirements.
Felony vs Misdemeanor DUI in Connecticut
In Connecticut, most first and second DUI offenses are classified as misdemeanors. However, certain circumstances can elevate a DUI to a felony charge.
A DUI becomes a felony in Connecticut if:
- It’s your third or subsequent offense within a specific timeframe
- The DUI caused serious bodily injury to another person
- The DUI resulted in death
- You have a prior felony DUI conviction
Felony DUI convictions carry much harsher penalties, including longer jail sentences, higher fines, and extended license suspensions compared to misdemeanor charges.
Does Connecticut Offer Drunk Driving Diversion Programs?
Connecticut offers one alternative sentencing option for certain DUI cases, especially for people arrested for the first time. This program focus on rehabilitation and education rather than purely punitive measures.
Pretrial – Impaired Driver Intervention Program (IDIP)
Connecticut’s IDIP allows eligible drivers convicted of a first DUI to complete substance abuse treatment, alcohol education programs, and other requirements in exchange for having charges dismissed upon successful completion and sealed to the public.
Refusing a Chemical Test Under Connecticut DUI Law
Connecticut applies an implied consent law. When you drive in Connecticut, you automatically consent to chemical testing if an officer suspects you of driving under the influence. Refusing a test in Connecticut carries serious administrative penalties that are separate from any criminal charges you may face.
Administrative Penalties for Test Refusal:
- Immediate license suspension
- Extended suspension periods compared to test failure
- Mandatory ignition interlock device installation
- Additional fines and fees
DUI Penalties & Consequences
Penalties for DUI Offenses in Connecticut
Penalties for DUIs in Connecticut become progressively severe with each conviction and vary based on your BAC level and whether anyone was injured.
First Offense
Jail Time: Up to 6 months
Fines: $500-$1,000
License Suspension: 45 days to 1 year
Additional Requirements: IID installation
Second Offense
Jail Time: 120 days to 2 years
Fines: $1,000-$4,000
License Suspension: 1year
Additional Requirements: IID installation, treatment program
Third Offense
Jail Time: 1-3 years
Fines: $2,000-$8,000
License Suspension: Permanent revocation possible
Additional Requirements: Long-term IID, intensive treatment
Aggravating Factors That Increase Connecticut DUI Penalties
In Connecticut, several factors lead to elevated penalties for a DUI conviction:
- Having a passenger under 16 years old in the vehicle
- Causing bodily injury to another person
- Driving under the influence in a school zone
- Previous DUI convictions within the lookback period
- Refusing to submit to chemical testing
- Driving with a suspended or revoked license
- Excessive speeding while under the influence
Driving Without a Valid License
Driving with a suspended license in Connecticut is a serious offense that can complicate your legal troubles. If caught driving while your license is suspended for a DUI, you could face additional fines and even jail time.
Aggravating factors and license violations make it more difficult for you to recover from your original DUI. These issues will extend the timeline for getting your full driving privileges restored. Courts and the DMV take these violations very seriously in Connecticut, and they can reset much of your progress toward license reinstatement.
License Suspension
Who Determines if You Can Continue Driving After a DUI
In Connecticut, two separate entities determine your driving privileges after a DUI.
Connecticut Department of Motor Vehicles (DMV)
Handles administrative license suspension based on either test failure (BAC over the legal limit) or test refusal. This process is separate from court proceedings and happens quickly after arrest.
Connecticut Courts
As part of criminal sentencing, the court may impose additional license suspension or restrictions beyond what the DMV has already administered.
The administrative suspension through the DMV occurs independently of your criminal case, meaning you could have your license suspended even if your criminal DUI charges are later reduced or dismissed.
How Long Will Your License Be Suspended?
Getting your license suspended in Connecticut means you are no longer allowed to drive a vehicle, unless you obtain a temporary or restricted license during your suspension. Here’s how long your regular license may be suspended for a DUI in Connecticut:
| Offense | Court-Imposed Suspension |
| First Offense (Test Failure) | 45 days |
| First Offense (Test Refusal) | 45 days |
| Second Offense | 45 days |
| Third Offense | Up to permanent revocation |
Steps to Reinstate Your License
To reinstate your driver’s license after a DUI suspension in Connecticut, you must:
- Serve your full suspension period
- Pay reinstatement fees to the Connecticut DMV
- Complete required education or treatment programs
- Install an IID if mandated by court or administrative order
- Pass any required written or driving tests
Restoring Your Driving Privileges
After a DUI conviction in Connecticut, there are specific paths to regaining some or all your driving privileges. These options vary based on your criminal driving history, compliance with court orders, and willingness to meet strict requirements.
Eligibility for a Restricted Driver’s License
In Connecticut, you may be eligible for a restricted license that allows limited driving for essential purposes. To qualify, you generally must:
- Have served a portion of your suspension period
- Have no other suspensions or revocations on your record
- Install an ignition interlock device on your vehicle
- Pay all applicable fees and penalties
- Demonstrate a legitimate need for driving privileges
How to Apply for Temporary Restricted Driver’s License
To apply for a temporary restricted driver’s license in Connecticut, you must:
- Install an IID on your vehicle
- Provide need-based documentation (e.g., employment verification or medical necessity)
- Complete any required assessment or education programs
- Submit application to the Connecticut DMV and pay applicable fees
Connecticut Ignition Interlock Device (IID) Requirement
Connecticut requires ignition interlock devices for DUI convictions, particularly for drivers with repeat convictions and cases involving high BAC levels. The IID program is administered through the Connecticut DMV and requires monthly monitoring and maintenance.
IID Requirements:
- Professional installation by approved vendors with certified technicians
- Monthly calibration and data download
- Payment of all associated costs
- Compliance with all program rules and restrictions
- Successful completion of the required installation period
Selecting the right ignition interlock provider can make a world of difference.
DUI Education and Treatment Programs
Connecticut mandates participation in alcohol education and/or treatment programs for most DUI convictions. These programs are designed to address underlying issues and reduce the likelihood of repeat offenses.
Required Programs May Include:
- Alcohol and drug education courses
- Victim impact panels
- Substance abuse evaluation and treatment
- Community service requirements
- Regular monitoring and reporting
Program Completion Requirements:
- Full attendance at all sessions
- Payment of all program fees
- Compliance with program rules and requirements
- Submission of successful completion certificate to the court and DMV
Failure to complete required programs can result in extended license suspensions, additional fines, and possible jail time. Connecticut takes program compliance seriously and monitors completion through multiple agencies.
Understand what to expect and how to prepare for a substance abuse evaluation.
FAQs About Connecticut DUI Laws
Here are the most asked questions about DUI laws and processes in Connecticut:
How long will your license be suspended for a first-time DUI in Connecticut?
For a first offense , you face a 45 day license suspension.
Do you need an ignition interlock device for a Connecticut DUI?
Connecticut requires ignition interlock devices (IID) for DUI convictions, particularly for drivers with repeat convictions and cases involving high BAC levels.
Can you get a restricted license after a DUI in Connecticut?
Yes, you may be eligible for a restricted license that allows limited driving for essential purposes in Connecticut. To qualify, you generally must fulfill several requirements and demonstrate legitimate need for driving privileges such as employment or medical necessity.
What happens if you refuse a breathalyzer test in Connecticut?
Connecticut has an implied consent law, meaning you automatically consent to chemical testing when driving. Refusing a test carries serious administrative penalties and test refusal penalties are often harsher than those for failing the test.
Sources
- Connecticut Department of Motor Vehicles. (2025). Driving Under the Influence License Suspension. Retrieved from https://portal.ct.gov/dmv/licenses-permits-ids/license-suspension/driving-under-influence
- Connecticut Department of Motor Vehicles. (2025). Ignition Interlock Program. Retrieved from https://portal.ct.gov/dmv/licenses-permits-ids/license-suspension/ignition-interlock-program
- Connecticut Department of Mental Health and Addiction Services. (2025). Pretrial Intervention Program. Retrieved from https://portal.ct.gov/dmhas/divisions/forensic-services/pretrial-intervention-program-ptip
- FindLaw. (2025). What Are the Connecticut DUI Laws? Retrieved from https://www.findlaw.com/state/connecticut-law/what-are-the-connecticut-dui-laws.html
- National College for DUI Defense. (2025). Connecticut OUI Laws. Retrieved from https://www.ncdd.com/connecticut-oui-laws
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