Not sure compared to the Accord, but in the press release for the 2017 Civic Type R, they quoted that they increased the downforce while decreasing the drag compared to a normal Civic hatchback using voodoo magic. OK, maybe not voodoo magic, but the aero of the CTR helps reduce drag, mainly around the wheels. The side vents on the front bumper (not the splitter that sends air to the brakes) sends air around the front wheels to create an air curtain to reduce drag this way. The side skirts and rear flaring also provide similar benefits. More specifically, Honda quoted a coefficient of drag of 0.26.I wonder what the difference in coefficient of drag between the two is? I'd bet the CTR has quite a bit more drag used to create downforce and cooling.
Yeah, it was kind of hard to believe when I read the numbers, but damn, Honda made a deal with the devil or something to pull off that hat trick^Wow. I didn't know the CTR was so slippery. No wonder it keeps pulling so hard over 100 MPH.