One problem related to transmission noise has been reported for the 2006 Volkswagen Beetle. The most recently reported issues are listed below.
06 dig tranny making noise, vibrating badly. Dealer says, 77000 miles transmission needs to be replaced. The 10 yr 10000 mile warranty is for 2007 and up vehicles. 2006 is not included. ( my th400 tranny in my Buick has lasted 39 years. . . . . . ).