One problem related to noises during shifting has been reported for the 2004 Subaru Impreza. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Subaru Impreza based on all problems reported for the 2004 Impreza.
Was at the local track on run what you brung night. Lined up against an srt-4. Light turned green. I accelerated trying to get a holeshot. I heard a loud banging noise. Sounded like the transmission/clutch giving up. The srt-4 was way ahead of me. I shifted through the gears and was not able to catch up. That srt-4 was fast. The lack of power in my sti really dishonored my family. It forced me to be humiliated. I took the car to the dealer and was told that the car was normal and to expect to be outmatched by cars like the Dodge srt-4. They never did tell me anything about the transmission/clutch noise.