Yepper!

If you want to read the answer as posted by DMV then go to CT Emissions Program - FAQs - Testing and scroll down to 'What vehicles need to be tested?'

There the link CT Emissions Program - When Do I Get Tested - Exempt Vehicles gives the answer:
"A motor vehicle twenty five-years old or older, (R.C.S.A 14-164c-2a "twenty-five or more years ago" shall mean the number of years arrived at by subtracting the model year of the motor vehicle seeking the exemption from the current calendar year). "