One problem related to accelerator pedal has been reported for the 2000 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Toyota Avalon based on all problems reported for the 2000 Avalon.
After about 5 years, my 2000 Toyota Avalon began to experience occasional continued acceleration ("sticking of gas mechanism") when I removed my foot from the gas pedal. Being a 230 lb male, I was able to overcome this occurrence at signal lights or stop signs by applying extreme force on the brake pedal. I've lived with it, but know for certain it is a defect. This happens 3-4 times a year. This is not a "me too" complaint. I suspect this "sticking" acceleration problem is much bigger than reported as many drivers (like me) don't bother.