Yes. You will be notified by mail of your test days. Vehicles must be tested every other year. New vehicles less than four years old or more than 25 years old are exempt. If you do not have your vehicle tested, it does not pass, or has not been granter a waiver, DMV will not renew your registration. For information and testing stations, call 1-888-828-8399 or visit online at ctemissions.com.
The sole emissions testing station in town is Darien Auto Center (203-655-8203) at 1350 Post Road. You can find the complete roster of stations online at ctemissions.com or by calling 1-888-828-8399. The test fee is $20.