I'm sorry I do not have a CL, but I have been a Acura owner for some years. I am not aware of CL's having any particular Tranny issues. However it is imperative that when you changes the automatic transmission fluid that you use Honda brand fluid, or they will start to shift poorly. that is with any Honda product. For your own peace of mind I do suggest researching the Acura CL/TL reliability ratings in Consumer Reports.