Even in a performance-oriented coupe like the Si, you can still feel environmentally responsible.
The Civic Si is a descendant of the 1975 Civic CVCC, which was the first vehicle to pass the emissions requirement of the Clean Air Act of 1970 without using a catalytic converter.
The Civic has come a long way since then, and now features technological achievements that are just as impressive.
The next-generation Civic Si
Today's Civic Si features a pulse-quickening 2.4-liter aluminum-alloy i-VTEC® 4-cylinder engine
that provides exceptional fuel economy (22 city/31 hwy/25 combined mpg).