One problem related to transmission shudder has been reported for the 2006 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Avalon based on all problems reported for the 2006 Avalon.
Hesitation from take off intermittent, transmission shudders on inclines. I would be pulling out into traffic and the car would barley move even with pushing down on the accelerator! then all of a sudden it will just take off! I'll be driving through they city and between 40 and 50 miles per hour the car shifts erratically.