One problem related to clunking noise has been reported for the 2004 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Honda Civic based on all problems reported for the 2004 Civic.
Problems with an opaque film that developed on the windows while driving. (inside of the windows) the problem was suggested to be the result of polymer vapors out gassing from the plastics used for the vehicles interior. This film would obstruct the consumer vision almost completely blinding the consumer at night or during sunlight. Honda suggested that this was normal and there is nothing they could do to remedy this problem. There was also a clunking noise when the brakes were applied while going over bumps.