Granted, a lot more people are driving Toyota RAV4s and Honda CRVs these days, and they have a good reputation for reliability, plus less expensive parts than a BMW might, but that warranty is still going to run in the $2,000 range, easily.See our full review of CARCHEX here. ...
but since your transmission is much bigger and on the other side of your engine, it is usually pretty easy to tell where the sound is coming from by simply popping your hood and listening for the sound at idle.