Read one article which states the hybrid FD is 0.27, should be the same for the normal FD as they share the same chasis?
Some information courtesy of k-series.com:
http://www.k-series.com/news_details.php?news_id=60
Quote:
The Civic manages airflow for an approximate 5 percent improvement in coefficient of drag (Cd). Items such as the A pillar, side mirrors, wiper layout and the use of underfloor pans have all been designed to minimize air turbulence. These designs result in enhanced fuel economy and less wind noise. Other measures contributing to reduce wind noise levels include dramatically reducing the width of body seams, mounting glass flush with the surrounding body panels, and using double seals around all doors.
Then again, accord and civic are really 2 different class of cars.