Two problems related to engine exhaust system have 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.
Engine stalled while driving resulting in complete engine failure.
I was trying to get my 2005 Toyota Avalon's emission testing done. I went to two testing sites and they were unable to read the emissions system on my car. I went to the dealership and they said that it is a common issue and that your emissions will have to be done old school and that Toyota can not keep up with emissions. The problem is that in GA they have done away with the old school style testing and there are only a few locations that still do it. I was told by the dealership that they had 3 other 2005 Avalons with the same issue and told them they had to dot it the old school way.