One problem related to transmission gear slipping has been reported for the 2007 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Avalon based on all problems reported for the 2007 Avalon.
I have experienced on several occasions the transmission slipping so that when I accelerate the car does not move, then suddenly jerks real hard. This has left me in the middle of the street and almost caused several accidents. It has become progressively7 worse. Now it is becoming a safety problem in that the car could suddenly fail to move once you get in the middle of a cross road then suddenly drive off.