Connecticut vehicle registration renews every two years, and you can renew online, by mail, or in person at a DMV office

Connecticut's Department of Motor Vehicles (DMV) sends renewal notices 60 days before your registration expires. The notice shows your expiration date, renewal fee, and a barcode you can use to renew online. You do not have to wait for the notice to arrive—you can renew as soon as 90 days before expiration. The fastest route is online through the Connecticut DMV website, which takes about 10 minutes and costs the standard renewal fee plus a $1.50 online processing fee.

Your vehicle must pass an emissions test before you renew, unless it is exempt. Gasoline vehicles registered in Fairfield, Hartford, Litchfield, Middlesex, New Haven, or New London counties must test within 14 months of the test date on your current registration. Diesel vehicles and those registered outside those six counties do not require an emissions test. If your vehicle fails, you have 60 days to fix it and retest before your registration expires.

Key Takeaways

  • Connecticut registration renews every two years, and the DMV mails a renewal notice 60 days before expiration with your fee amount and online barcode.
  • You can renew online in about 10 minutes if your vehicle has passed its emissions test, or you can renew by mail or in person at a DMV office.
  • Gasoline vehicles in six specific counties (Fairfield, Hartford, Litchfield, Middlesex, New Haven, New London) must pass an emissions test within 14 months of the test date on your current registration.
  • If you renew online or by mail, your new registration arrives by mail within 7 to 10 business days; in-person renewal at a DMV office is when ready.
  • Renewing late carries a $25 penalty fee on top of the standard renewal fee, so renewing before the expiration date saves money.

Renewing online through the Connecticut DMV website

Online renewal is the fastest option if your vehicle has passed its emissions test and you have the renewal notice or your vehicle identification number (VIN). Go to the Connecticut DMV website, select "Renew Registration," and enter your VIN or the barcode from your renewal notice. You will need to provide your current mailing address and confirm that your vehicle has passed emissions testing if required in your county.

Payment is by credit card, debit card, or electronic check. The standard renewal fee varies by vehicle weight and type, but the DMV website shows the exact amount before you pay. After you submit payment, you receive a confirmation number. Your new registration card arrives by mail within 7 to 10 business days. You can continue driving on your current registration until the new one arrives, as long as you renewed before the expiration date.

Renewing by mail or at a DMV office

If you prefer not to renew online, you can mail your renewal notice with payment to the address printed on the back of the notice. Include a check or money order for the renewal fee plus the $1.50 processing fee if you are paying by mail. Mail renewal takes 2 to 3 weeks from the time the DMV receives your envelope, so send it at least 3 weeks before your registration expires.

You can also renew in person at any Connecticut DMV office. Bring your renewal notice, proof of emissions testing (if required), and payment by check, money order, or card. In-person renewal is when ready—you walk out with your new registration card the same day. DMV offices are open Monday through Friday, 8:30 a.m. to 4:30 p.m., with some locations open until 6 p.m. on certain days. Check the DMV website for hours and locations near you.

What happens if your registration expires

Driving with an expired registration is illegal in Connecticut and can result in a fine. If you are stopped by police, you face a ticket and the vehicle may be impounded depending on how long it has been expired. More importantly, your insurance may not cover a claim if your registration is expired at the time of an accident.

If you miss the expiration date, you can still renew, but a $25 late penalty is added to your renewal fee. The penalty applies whether you renew online, by mail, or in person. To avoid the penalty and the risk of being stopped, renew before the date on your current registration card.

Emissions testing requirements and exemptions

Connecticut requires emissions testing for gasoline vehicles registered in Fairfield, Hartford, Litchfield, Middlesex, New Haven, and New London counties. The test must be completed within 14 months of the test date shown on your current registration. Diesel vehicles, vehicles older than 1975, and vehicles registered outside the six required counties do not need an emissions test.

You can take your vehicle to any state-certified emissions testing station. The test takes about 10 minutes and costs around $35 to $40, though prices vary by station. If your vehicle fails, you have 60 days to repair it and retest at no additional charge. Once it passes, you receive a test certificate that you need to show when you renew your registration. If you do not have proof of a passing test when you renew, the DMV will not process your renewal until you provide it.

Renewing a vehicle with a lien or loan

If your vehicle has a lien—meaning a bank or finance company holds the title—you can still renew your registration. The lien does not prevent registration renewal. Bring your renewal notice and proof of a passing emissions test (if required) along with your payment, just as you would for any other vehicle. The lienholder does not need to sign off on the renewal.

However, if your vehicle is financed and you have not paid off the loan, the lender may require you to maintain full coverage insurance. Check your loan agreement to confirm what insurance is required. Renewing your registration does not change your insurance coverage, so make sure your policy is current before you renew.

Transferring registration when you sell or buy a vehicle

If you sell your vehicle, the new owner must register it in their name within 10 days of purchase. You are not responsible for renewing the old registration once you sell it. If you buy a used vehicle, you have 10 days to register it in your name. You cannot renew a registration for a vehicle you no longer own.

When you buy a vehicle, bring the bill of sale, proof of insurance, and a completed process for registration to a DMV office or submit it by mail. The registration fee for a new vehicle is based on its weight and type. If the vehicle you bought still has time left on its old registration, that time does not transfer to you—you pay for a new two-year registration period starting from the date you register it.

Frequently Asked Questions

Can I renew my registration if my vehicle failed the emissions test?

No. You must have a passing emissions test certificate before the DMV will process your renewal. If your vehicle failed, you have 60 days to repair it and retest. Once it passes, bring the new test certificate when you renew online, by mail, or in person.

What if I lose my renewal notice?

You do not need the renewal notice to renew. You can renew online or in person using your VIN and driver's license. If you renew by mail, call the DMV at 860-263-5700 to request a duplicate notice or to confirm your renewal fee amount.

How long does it take to get my new registration card in the mail?

After you renew online or by mail, your new registration card arrives within 7 to 10 business days. You can drive legally on your old registration until the new one arrives, as long as you renewed before the expiration date. In-person renewal at a DMV office is when ready.

Do I have to renew in person, or can I always use online or mail?

You can renew online or by mail for most vehicles. In-person renewal is optional but useful if you need your new card the same day or if you have questions about your renewal. Some situations—such as address changes or title issues—may require a visit to a DMV office.

What if I renew late and get a ticket for expired registration?

You will owe both the $25 late penalty on your renewal fee and the traffic fine from the ticket. The renewal fee and penalty are separate from any court fines. Renewing before your expiration date avoids both the penalty and the risk of a ticket.