I have had the flywheel rattle from pretty much new but it has got a lot worse over the last 3 months. Funny enough just after the car ended warranty it got significantly worse. I have it at idle and under slight acceleration in forwards and reverse. I have a video clip of it at its worst which sounds like a rattling exhaust comming from the rear of the engine. PM me your phone number and I'll text it to you if you want. The degree of noise changes daily, sometimes it is ok and other days it sounds like your driving an old Falcon.