One problem related to transmission gear slipping has been reported for the 2005 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Toyota Avalon based on all problems reported for the 2005 Avalon.
Transmission lags then jumps forward, transmission slips at low speeds never seems to find a gear. Steering at speeds below 40 will jerk left or right depending on the road. (scares you to death) brakes have grabbed and jerked the car from day one the dealership ground the rotors to fix this but it has not resolved the problem. The car has had the power steering hose replaced because it leaked and it still does. The cd player skip while your parked, the steering wheel needed to be replaced. We have had this car in to the dealer 5 times with none of the problems to the brakes, transmission, or steering resolved.