I have had a 2000 5 speed and now own a 2002 CVT. With the radio off and no other nois the CVT transmission makes a slight humming, whining sort of noise which is normal as I have read about it somewhere. It is probably the CVT belt. the transmission is on the drivers side so my guess is that is the noise. I have 15,000 miles on mine and have the lifetime at 59.9. The lifetime on the 5 speed was 67. Difference is not haveing the lean burn and the CVT is heavier. It is rated at sulev vs ulev on the 5 spee.