I just picked up a 2013 5-door WRX premium last week, and I am currently in the "breaking-in period." Don't get me wrong, the car is incredible, but it sucks driving it like a grandma...I'm keeping the RPMs between 2 - 3 k in every gear for the first 1000 miles, and then changing the oil, and then letting it rip!
Anyways, I've literally put about 200 miles on the car, and have noticed something very strange over the last 3 days. Let me give an example...
When I turn off my car I leave it in first gear; I've noticed that when I start my car in the morning, put it in reverse, back out onto the road, put it in first, give it gas, and let off the clutch, that a quick clicking/rattling noise happens as I disengage the clutch/engage the gas. That was a bit wordy, but basically when I go from reverse to first, a rattle/clicking noise is made when I let off the clutch fully.
What's strange is that is the ONLY time the clutch makes that noise -- it does not happen when I then shift from first to second, or second to third, or third to second. It seems to only happen the first time I go from reverse to first. I've tried out other circumstances, and it doesn't happen. Let's say that it just made that noise, and I'm in first gear...I then proceed to stop the car, put it in reverse, and then put it back into first...as I disengage the clutch fully there is no noise. So I've localized it to the first time you go from reverse to first.
Another strange thing is that this only happens after letting the car sit for the day. For instance, if the car is parked while I am at work it will make this noise when I back out and go from reverse to first, but it will not make this noise if I then let the car sit for 20 minutes, and then go from reverse to first. Another peculiar thing is that it does not happen if I let me car sit for the day, and do not go from reverse to first. Say I back in when I park my car, and simply drive straight out...I notice that the clutch does not make this clicking noise. Basically it only happens when I let the car sit for, at a minimum, 2 hours, and then go from reverse to first.
I scheduled an appointment with the dealership already, but I figured I'd reach out to you all first...some input would be greatly appreciated.