How much does it cost to register my new vehicle in Connecticut and get a set of license plates? It costs $80 to register a passenger vehicle for a period of 2 years. A pickup truck can be registered as a passenger vehicle, if it weighs less than 8,500 lbs and is not for commercial use.Connecticut drivers 65 years old and older have the option to register their vehicles for 1 year and pay only $40, plus a $5 Clean Air Act Fee.Expect to pay some additional fees at the time of registration.The following is a list of charges: 1  Federal Clean Air Act fee: $10. 2  The fee is waived for electric-powered vehicles and trailers. 3  Greenhouse Gas Reduction fee: $5 for new motor vehicles.xpect to pay some additional fees at the time of registration. The following is a list of charges: 1  Federal Clean Air Act fee: $10. 2  The fee is waived for electric-powered vehicles and trailers. 3  Greenhouse Gas Reduction fee: $5 for new motor vehicles.