As in the coupe, power flows to the front wheels through a six-speed manual transmission and a helical limited-slip differential. An automatic transmission is not a part of the Honda Civic Si equation, so if you can’t shift for yourself, maybe you should buy a car that just pretends to be a sport sedan – like a Chevy Cobalt SS four-door. Alternatively, choose the Civic EX, which is plenty more fun to drive than most people think while getting 40 mpg on the highway.