Connecticut DUI/OUI Laws & Penalties (2026)
Connecticut treats a second DUI offense as a felony. The state requires ignition interlock devices for all DUI convictions.
Connecticut DUI/OUI Penalties
1st Offense
2nd Offense
BAC Limits in Connecticut
📜 Expungement
DUI/OUI expungement is available in Connecticut. Waiting period: After 10 years.
Expungement Guide →💰 Estimated Total Cost
A first DUI/OUI in Connecticut typically costs $10,000-$25,000+ including fines, attorney, classes, IID, and insurance increases.
Calculate Your Cost →Find a DUI/OUI Attorney in Connecticut
Connect with experienced DUI/OUI lawyers in Hartford, New Haven, Stamford, and across Connecticut.
Connecticut DUI/OUI Deep Dives
🚨 First Offense Penalties
Complete guide to what happens on your first DUI/OUI in Connecticut.
🍺 BAC Limit
Legal BAC limits for standard, commercial, and under-21 drivers.
💰 DUI/OUI Cost
Full cost breakdown: fines, attorney, classes, insurance, and more.
🔧 Ignition Interlock Cost
IID installation, monthly fees, and provider comparison.
🚫 License Suspension
Suspension length, restricted license options, and reinstatement steps.
🧮 Cost Calculator
Estimate your total DUI/OUI cost with our interactive tool.
Official Sources & References
- 📋 Conn. Gen. Stat. § 14-227a — Connecticut DUI/OUI statute
- 🚗 Connecticut DMV — License suspension, reinstatement, IID requirements
- 📊 NHTSA Impaired Driving Data
- 🛡️ MADD — Mothers Against Drunk Driving
DUIFinders.com is not a law firm and does not provide legal advice. Information is for general purposes only. Consult a licensed attorney in Connecticut for advice specific to your situation.
Connecticut DUI/OUI FAQ
What is the BAC limit in Connecticut?
The legal BAC limit in Connecticut is 0.08% for regular drivers, 0.04% for commercial drivers, and 0.02% for drivers under 21.
What are the penalties for a first DUI/OUI in Connecticut?
A first DUI/OUI in Connecticut is a Misdemeanor. Penalties include Up to 6 months (48 hours mandatory) jail, $500–$1,000 in fines, and 45-day suspension license suspension.
Is an ignition interlock device required in Connecticut?
Required for all offenses
Can a DUI/OUI be expunged in Connecticut?
Yes, DUI/OUI expungement is available in Connecticut. Waiting period: After 10 years.
What is the lookback period for DUI/OUI in Connecticut?
Connecticut uses a 10-year lookback period to determine if an offense counts as a repeat offense.